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DDR-120C-48
Isolated DIN Rail Mount DC/DC Converter, Railway, 2:1, 120 W, 1 Output, 48 V, 2.5 A
⚠️ Reference pricing provided. In case of supply shortages, we will connect you with our trusted procurement partners to ensure your project's continuity.
- Manufacturer: MEAN WELL
- Product type: Isolated DIN Rail Mount DC / DC Converters
- No. of Outputs:1 Output; Output Power Max:120W; Output Voltage - Output 1:48V; Output Current - Output 1:2.5A; Output Voltage - Output 2:-; Output Current - Output 2:-; Output Voltage - Output
- SVHC: No SVHC (25-Jun-2025)
- Depth: 102mm
- Width: 32mm
- Height: 125.2mm
- Input Ratio: 2:1
- Product Range: DDR-120 Series
- No. of Outputs: 1 Output
- Output Power Max: 120W
- Isolation Voltage: 4kV
- Output Regulation: -
- Input Voltage DC Max: 67.2V
- Input Voltage DC Min: 33.6V
- Input Voltage DC Nom: 48V
- Output Current - Output 1: 2.5A
- Output Current - Output 2: -
- Output Voltage - Output 1: 48V
- Output Voltage - Output 2: -
- Power Supply Applications: Railway
- DC / DC Converter Output Type: Fixed, Adjustable
| Delivery and price | |
|---|---|
| Units per pack | 50 |
| Price | 49.78 € |
| Current stock | 10+ |
| Lead time | 30 days |
Datasheet
**- DDR 120 series** 120W DIN Rail Type DC-DC Converter **==> picture [42 x 5] intentionally omitted <==** **----- Start of picture text -----**<br> User’s Manual<br>**----- End of picture text -----**<br> CB **IEC62368-1** c **UL62368** Wks **-1** US **AS/NZS 62368.1** G HACE **TPTC004** cACc A ■ **==> picture [13 x 11] intentionally omitted <==** **----- Start of picture text -----**<br> ■<br>**----- End of picture text -----**<br> ℃ **==> picture [13 x 11] intentionally omitted <==** **----- Start of picture text -----**<br> ■<br>**----- End of picture text -----**<br> ## ■ DDR-120 series is a 120W DIN Rail type DC-DC converter with main features including DIN rail-type easy installation, ℃ ## ■ _File Name:DDR-120-SPEC 2022-09-20_ **- DDR 120 series** ## 120W DIN Rail Type DC-DC Converter ## Ceeeeeeeeeeeeeeeeeeeeeeeeee rere errr rere ## **SPECIFICATION** |**MODEL**<br>**DC VOLTAGE**<br>**RATED CURRENT**<br>**CURRENT RANGE**<br>**RATED POWER**<br>**OUTPUT**<br>**VOLTAGE ADJ. RANGE**<br>**LINE REGULATION**<br>**LOAD REGULATION**<br>**SETUP, RISE TIME**<br>**HOLD UP TIME (Typ.)**<br>**VOLTAGE RANGE**<br>**Note.4**<br>**EFFICIENCY (Typ.)**<br>**INPUT**<br>**INRUSH CURRENT (Typ.)**<br>**SAFETY STANDARDS**<br>**WORKING TEMP.**<br>**WORKING HUMIDITY**<br>**STORAGE TEMP., HUMIDITY**<br>**TEMP. COEFFICIENT**<br>**VIBRATION**<br>**MTBF**<br>**DIMENSION**<br>**OTHERS**<br>**NOTE**<br>**PACKING**<br>**OVERLOAD**<br>**OVER VOLTAGE**<br>**DC CURRENT (Typ.)**<br>5A @12Vdc<br>Protection type : Shut down o/p voltage, re-power on to recover<br>-40 ~ +70<br>(Refer to "Derating Curve")<br>℃<br>5 ~ 95% RH non-condensing<br>-40 ~ +85<br>, 5 ~ 95% RH non-condensing<br>℃<br>±<br>℃<br>℃<br>0.03%/<br>(0 ~ 55<br>)<br>Component:10 ~ 500Hz, 5G 10min./1cycle, 60min. each along X, Y, Z axes; Mounting: Compliance to IEC61373<br>32*125.2*102mm (W*H*D)<br>**WITHSTAND VOLTAGE**<br>**ISOLATION RESISTANCE**<br>I/P-O/P:4KVdc I/P-FG:2.5KVdc O/P-FG:2.5KVdc<br>I/P-O/P, I/P-FG, O/P-FG:>100M Ohms / 500Vdc / 25<br>/ 70% RH<br>℃<br>**ENVIRONMENT**<br>**SAFETY &**<br>**EMC**<br>**(Note 6)**<br>**PROTECTION**<br>**RIPPLE & NOISE (max.) Note.2**<br>**VOLTAGE TOLERANCE Note.3**<br>℃<br>μ<br>μ<br>(as available on http://www.meanwell.com)<br>℃<br>℃<br>※<br>：<br>https://www.meanwell.com/serviceDisclaimer.aspx<br>**PEAK CURRENT**<br>**PEAK POWER**<br>**Note.5**<br>5A @ 24Vdc<br>**Parameter**<br>**Parameter**<br>ESD<br>Radiated<br>EFT / Burst<br>Surge<br>Conducted<br>Magnetic Field<br>Conducted<br>Radiated<br>Voltage Flicker<br>**Standard**<br>**Standard**<br>BS EN/EN55032<br>BS EN/EN55032<br>BS EN/EN61000-3-3<br>BS EN/EN61000-4-2<br>BS EN/EN61000-4-3<br>BS EN/EN61000-4-4<br>BS EN/EN61000-4-5<br>BS EN/EN61000-4-6<br>BS EN/EN61000-4-8<br>**Test Level / Note**<br>**Test Level / Note**<br>Class B<br>Class B<br>-----<br>**EMC IMMUNITY**<br>**EMC EMISSION**<br>BS EN/EN55035 , BS EN/EN61000-6-2(BS EN/EN50082-2)<br>Level 3, 8KV air ; Level 3, 6KV contact; criteria A<br>Level 3, 10V/m ; criteria A<br>Level 4, 30A/m ; criteria A<br>Level 3, 10V ; criteria A<br>Level 3, 2KV ; criteria A<br>IEC 62368-1,<br>approved; Design refer to UL508<br>UL 62368-1, EAC TP TC 004, AS/NZS 62368.1<br>11.2A @12Vdc<br>Harmonic Current<br>-----<br>-----<br>**RAILWAY STANDARD**<br>Compliance to<br>; Meet<br>EN50155 / IEC60571 including IEC61373 for shock & vibration,<br>BS EN/<br>BS EN/<br>EN45545-2 for fire protection<br>**UNDER VOLTAGE LOCKOUT**<br>**DDR-120A-12**<br>12V<br>8.3A<br>0 ~ 8.3A<br>99.6W<br>50mVp-p<br>9 ~ 14V<br>±1.0%<br>±0.5%<br>±1.0%<br>12.45A<br>150W (3sec.)<br>500ms, 60ms @12Vdc<br>9 ~ 18Vdc<br>88.5%<br>14.4 ~ 16.8V<br>28.8 ~ 33.6V<br>24V<br>4.2A<br>0 ~ 4.2A<br>100.8W<br>50mVp-p<br>24 ~ 28V<br>±1.0%<br>±0.5%<br>±1.0%<br>6.3A<br>**DDR-120A-24**<br>88.5%<br>48V<br>2.1A<br>0 ~ 2.1A<br>100.8W<br>50mVp-p<br>48 ~ 56V<br>±1.0%<br>±0.5%<br>±1.0%<br>3.15A<br>**DDR-120A-48**<br>9 ~ 18Vdc<br>88.5%<br>**DDR-120B-12**<br>89%<br>16.8 ~ 33.6Vdc<br>12V<br>10A<br>0 ~ 10A<br>120W<br>50mVp-p<br>9 ~ 14V<br>±1.0%<br>±0.5%<br>±1.0%<br>15A<br>**DDR-120B-24**<br>89.5%<br>16.8 ~ 33.6Vdc<br>24V<br>5A<br>0 ~ 5A<br>120W<br>50mVp-p<br>24 ~ 28V<br>±1.0%<br>±0.5%<br>±1.0%<br>7.5A<br>**DDR-120B-48**<br>91%<br>16.8 ~ 33.6Vdc<br>48V<br>2.5A<br>0 ~ 2.5A<br>120W<br>50mVp-p<br>48 ~ 56V<br>±1.0%<br>±0.5%<br>±1.0%<br>3.75A<br>9 ~ 18Vdc<br>BS EN/EN50121-3-2 for EMC (except for 9~18Vin)<br>57.6 ~ 67.2V<br>180W (3sec.)<br>14.4 ~ 16.8V<br>28.8 ~ 33.6V<br>57.6 ~ 67.2V<br>24Vin (B - type) :Power<br>V ,<br>FF<br>V<br>ON<br>16.8<br>O<br>16.5<br>≥<br>≤<br>12Vin (A - type) :Power<br>V ,<br>FF<br>V<br>ON<br>9<br>O<br>8.5<br>≥<br>≤<br>510g; 28pcs/15.3Kg/1.22CUFT<br>Normally works within 150% rated output power for more than 3 seconds and then constant current protection 105~135%<br>rated output power with auto-recovery<br>Level 3, 1KV/Line-Line ;Level 3, 2KV/Line-Line-FG ;criteria A<br>**OPERATING ALTITUDE**<br>5000 meters<br>500ms, 60ms @24Vdc<br>5.6A @24Vdc<br>**REVERSE POLARITY**<br>Byinternal MOSFET, no damage, recovers automaticallyafter fault condition removed<br>Please refer to page 7 Hold up Time( Load de-rating curve )<br>EN50155:2007-comply with 3ms@ full load<br>EN50155:2017-comply with S1 level<br>**INTERRUPTION OF VOLTAGE SUPPLY**<br>EN50155:2007-comply with S1 level (6ms) @ full load, S2 level (10ms) @ 70% load<br>EN50155:2017-comply with S1 level<br>1769.5K hrs min.<br>Telcordia SR-332 (Bellcore) ; 214.5K hrs min. MIL-HDBK-217F (25<br>)<br>℃<br>~~Ge~~<br>(OO<br>Re<br>Ge ~~QQ~~<br>~~Qe~~<br>( ~~G~~<br>~~CQ~~<br>~~se~~<br> **(**<br>G<br>~~a(OG~~<br>~~eG~~<br>(<br>O<br>~~se~~<br>~~QO~~<br>~~Ge~~<br>QO<br>~~Qe~~<br>(<br>~~eeQO~~<br>a~~GQ~~<br>~~es~~<br>(OO<br>~~RQ~~<br>~~0~~<br>~~eG~~<br>~~Qe~~<br>Po~~|~~<br>~~a~~<br>~~rs F~~<br>~~a~~<br>ee<br>a<br>~~ee~~<br>a<br>a<br>~~Ct~~<br>~~ee~~<br>~~a GG~~<br>ee ~~GG~~<br>~~GO~~<br>~~OO~~<br>~~GG~~<br>~~Cn~~<br>~~GG~~<br>~~GO~~<br>~~GO~~<br>~~Ge~~<br>~~GG~~<br>~~GG~~<br>~~GG~~<br>a<br>a<br>a<br>1. All parameters NOT specially mentioned are measured at normal input (A:12Vdc , B:24Vdc)<br>, rated load and 25<br>of ambient temperature.<br>2. Ripple & noise are measured at20MHz of bandwidth by using a 12" twisted pair-wire terminated with<br>a0.1_<br>f<br>&47fparallel capacitor.<br>3. Tolerance: includes set up tolerance, line regulation and load regulation.<br>4. Derating may be needed under low input voltage. Please check the derating curve for more details.<br>5. 3 seconds max., please refer to peak loading curves.<br>6. The power supply is considered as an independent unit, but the final equipment still need to re-confirm that the whole system complies with<br>the EMC directives. For guidance on how to perform these EMC tests, please refer to “EMI testing of component power supplies.”<br>7. The ambient temperature derating of 3.5<br>/1000m with fanless models and of<br>5<br>/1000m with fan models for operating altitude higher than<br>2000m(6500ft).<br>Product Liability Disclaimer<br>For detailed information, please refer to|**MODEL**<br>**DC VOLTAGE**<br>**RATED CURRENT**<br>**CURRENT RANGE**<br>**RATED POWER**<br>**OUTPUT**<br>**VOLTAGE ADJ. RANGE**<br>**LINE REGULATION**<br>**LOAD REGULATION**<br>**SETUP, RISE TIME**<br>**HOLD UP TIME (Typ.)**<br>**VOLTAGE RANGE**<br>**Note.4**<br>**EFFICIENCY (Typ.)**<br>**INPUT**<br>**INRUSH CURRENT (Typ.)**<br>**SAFETY STANDARDS**<br>**WORKING TEMP.**<br>**WORKING HUMIDITY**<br>**STORAGE TEMP., HUMIDITY**<br>**TEMP. COEFFICIENT**<br>**VIBRATION**<br>**MTBF**<br>**DIMENSION**<br>**OTHERS**<br>**NOTE**<br>**PACKING**<br>**OVERLOAD**<br>**OVER VOLTAGE**<br>**DC CURRENT (Typ.)**<br>5A @12Vdc<br>Protection type : Shut down o/p voltage, re-power on to recover<br>-40 ~ +70<br>(Refer to "Derating Curve")<br>℃<br>5 ~ 95% RH non-condensing<br>-40 ~ +85<br>, 5 ~ 95% RH non-condensing<br>℃<br>±<br>℃<br>℃<br>0.03%/<br>(0 ~ 55<br>)<br>Component:10 ~ 500Hz, 5G 10min./1cycle, 60min. each along X, Y, Z axes; Mounting: Compliance to IEC61373<br>32*125.2*102mm (W*H*D)<br>**WITHSTAND VOLTAGE**<br>**ISOLATION RESISTANCE**<br>I/P-O/P:4KVdc I/P-FG:2.5KVdc O/P-FG:2.5KVdc<br>I/P-O/P, I/P-FG, O/P-FG:>100M Ohms / 500Vdc / 25<br>/ 70% RH<br>℃<br>**ENVIRONMENT**<br>**SAFETY &**<br>**EMC**<br>**(Note 6)**<br>**PROTECTION**<br>**RIPPLE & NOISE (max.) Note.2**<br>**VOLTAGE TOLERANCE Note.3**<br>℃<br>μ<br>μ<br>(as available on http://www.meanwell.com)<br>℃<br>℃<br>※<br>：<br>https://www.meanwell.com/serviceDisclaimer.aspx<br>**PEAK CURRENT**<br>**PEAK POWER**<br>**Note.5**<br>5A @ 24Vdc<br>**Parameter**<br>**Parameter**<br>ESD<br>Radiated<br>EFT / Burst<br>Surge<br>Conducted<br>Magnetic Field<br>Conducted<br>Radiated<br>Voltage Flicker<br>**Standard**<br>**Standard**<br>BS EN/EN55032<br>BS EN/EN55032<br>BS EN/EN61000-3-3<br>BS EN/EN61000-4-2<br>BS EN/EN61000-4-3<br>BS EN/EN61000-4-4<br>BS EN/EN61000-4-5<br>BS EN/EN61000-4-6<br>BS EN/EN61000-4-8<br>**Test Level / Note**<br>**Test Level / Note**<br>Class B<br>Class B<br>-----<br>**EMC IMMUNITY**<br>**EMC EMISSION**<br>BS EN/EN55035 , BS EN/EN61000-6-2(BS EN/EN50082-2)<br>Level 3, 8KV air ; Level 3, 6KV contact; criteria A<br>Level 3, 10V/m ; criteria A<br>Level 4, 30A/m ; criteria A<br>Level 3, 10V ; criteria A<br>Level 3, 2KV ; criteria A<br>IEC 62368-1,<br>approved; Design refer to UL508<br>UL 62368-1, EAC TP TC 004, AS/NZS 62368.1<br>11.2A @12Vdc<br>Harmonic Current<br>-----<br>-----<br>**RAILWAY STANDARD**<br>Compliance to<br>; Meet<br>EN50155 / IEC60571 including IEC61373 for shock & vibration,<br>BS EN/<br>BS EN/<br>EN45545-2 for fire protection<br>**UNDER VOLTAGE LOCKOUT**<br>**DDR-120A-12**<br>12V<br>8.3A<br>0 ~ 8.3A<br>99.6W<br>50mVp-p<br>9 ~ 14V<br>±1.0%<br>±0.5%<br>±1.0%<br>12.45A<br>150W (3sec.)<br>500ms, 60ms @12Vdc<br>9 ~ 18Vdc<br>88.5%<br>14.4 ~ 16.8V<br>28.8 ~ 33.6V<br>24V<br>4.2A<br>0 ~ 4.2A<br>100.8W<br>50mVp-p<br>24 ~ 28V<br>±1.0%<br>±0.5%<br>±1.0%<br>6.3A<br>**DDR-120A-24**<br>88.5%<br>48V<br>2.1A<br>0 ~ 2.1A<br>100.8W<br>50mVp-p<br>48 ~ 56V<br>±1.0%<br>±0.5%<br>±1.0%<br>3.15A<br>**DDR-120A-48**<br>9 ~ 18Vdc<br>88.5%<br>**DDR-120B-12**<br>89%<br>16.8 ~ 33.6Vdc<br>12V<br>10A<br>0 ~ 10A<br>120W<br>50mVp-p<br>9 ~ 14V<br>±1.0%<br>±0.5%<br>±1.0%<br>15A<br>**DDR-120B-24**<br>89.5%<br>16.8 ~ 33.6Vdc<br>24V<br>5A<br>0 ~ 5A<br>120W<br>50mVp-p<br>24 ~ 28V<br>±1.0%<br>±0.5%<br>±1.0%<br>7.5A<br>**DDR-120B-48**<br>91%<br>16.8 ~ 33.6Vdc<br>48V<br>2.5A<br>0 ~ 2.5A<br>120W<br>50mVp-p<br>48 ~ 56V<br>±1.0%<br>±0.5%<br>±1.0%<br>3.75A<br>9 ~ 18Vdc<br>BS EN/EN50121-3-2 for EMC (except for 9~18Vin)<br>57.6 ~ 67.2V<br>180W (3sec.)<br>14.4 ~ 16.8V<br>28.8 ~ 33.6V<br>57.6 ~ 67.2V<br>24Vin (B - type) :Power<br>V ,<br>FF<br>V<br>ON<br>16.8<br>O<br>16.5<br>≥<br>≤<br>12Vin (A - type) :Power<br>V ,<br>FF<br>V<br>ON<br>9<br>O<br>8.5<br>≥<br>≤<br>510g; 28pcs/15.3Kg/1.22CUFT<br>Normally works within 150% rated output power for more than 3 seconds and then constant current protection 105~135%<br>rated output power with auto-recovery<br>Level 3, 1KV/Line-Line ;Level 3, 2KV/Line-Line-FG ;criteria A<br>**OPERATING ALTITUDE**<br>5000 meters<br>500ms, 60ms @24Vdc<br>5.6A @24Vdc<br>**REVERSE POLARITY**<br>Byinternal MOSFET, no damage, recovers automaticallyafter fault condition removed<br>Please refer to page 7 Hold up Time( Load de-rating curve )<br>EN50155:2007-comply with 3ms@ full load<br>EN50155:2017-comply with S1 level<br>**INTERRUPTION OF VOLTAGE SUPPLY**<br>EN50155:2007-comply with S1 level (6ms) @ full load, S2 level (10ms) @ 70% load<br>EN50155:2017-comply with S1 level<br>1769.5K hrs min.<br>Telcordia SR-332 (Bellcore) ; 214.5K hrs min. MIL-HDBK-217F (25<br>)<br>℃<br>~~Ge~~<br>(OO<br>Re<br>Ge ~~QQ~~<br>~~Qe~~<br>( ~~G~~<br>~~CQ~~<br>~~se~~<br> **(**<br>G<br>~~a(OG~~<br>~~eG~~<br>(<br>O<br>~~se~~<br>~~QO~~<br>~~Ge~~<br>QO<br>~~Qe~~<br>(<br>~~eeQO~~<br>a~~GQ~~<br>~~es~~<br>(OO<br>~~RQ~~<br>~~0~~<br>~~eG~~<br>~~Qe~~<br>Po~~|~~<br>~~a~~<br>~~rs F~~<br>~~a~~<br>ee<br>a<br>~~ee~~<br>a<br>a<br>~~Ct~~<br>~~ee~~<br>~~a GG~~<br>ee ~~GG~~<br>~~GO~~<br>~~OO~~<br>~~GG~~<br>~~Cn~~<br>~~GG~~<br>~~GO~~<br>~~GO~~<br>~~Ge~~<br>~~GG~~<br>~~GG~~<br>~~GG~~<br>a<br>a<br>a<br>1. All parameters NOT specially mentioned are measured at normal input (A:12Vdc , B:24Vdc)<br>, rated load and 25<br>of ambient temperature.<br>2. Ripple & noise are measured at20MHz of bandwidth by using a 12" twisted pair-wire terminated with<br>a0.1_<br>f<br>&47fparallel capacitor.<br>3. Tolerance: includes set up tolerance, line regulation and load regulation.<br>4. Derating may be needed under low input voltage. Please check the derating curve for more details.<br>5. 3 seconds max., please refer to peak loading curves.<br>6. The power supply is considered as an independent unit, but the final equipment still need to re-confirm that the whole system complies with<br>the EMC directives. For guidance on how to perform these EMC tests, please refer to “EMI testing of component power supplies.”<br>7. The ambient temperature derating of 3.5<br>/1000m with fanless models and of<br>5<br>/1000m with fan models for operating altitude higher than<br>2000m(6500ft).<br>Product Liability Disclaimer<br>For detailed information, please refer to|**DDR-120A-12**|**DDR-120A-24**|**DDR-120A-48**|**DDR-120B-12**|**DDR-120B-12**|**DDR-120B-24**|**DDR-120B-48**| |---|---|---|---|---|---|---|---|---| ||**DC VOLTAGE**<br>~~Ge~~<br>Re|12V<br>~~Ge~~<br>Ge|24V<br>~~Ge~~<br>Ge~~QQ~~|48V<br>(OO<br>~~QQ~~|12V<br>(OO<br>~~QQ~~||24V<br>(OO<br>~~QQ~~|48V<br>(OO<br>~~QQ~~| ||**RATED CURRENT**<br>~~Ge~~<br>Re|8.3A<br>~~Ge~~<br>Ge|4.2A<br>~~Ge~~<br>Ge~~QQ~~|2.1A<br>(OO<br>~~QQ~~<br>(|10A<br>(OO<br>~~QQ~~<br>(||5A<br>(OO<br>~~QQ~~<br>~~G~~|2.5A<br>(OO<br>~~QQ~~<br>~~G~~| ||**CURRENT RANGE**<br>Re<br>~~Qe~~|0 ~ 8.3A<br>Ge<br>~~Qe~~|0 ~ 4.2A<br>Ge ~~QQ~~<br>~~Qe~~|0 ~ 2.1A<br>~~QQ~~<br>~~Qe~~<br>(|0 ~ 10A<br>~~QQ~~<br>~~Qe~~<br>(||0 ~ 5A<br>~~QQ~~<br>~~Qe~~<br>~~G~~|0 ~ 2.5A<br>~~QQ~~<br>~~Qe~~<br>~~G~~| ||**RATED POWER**<br>~~Qe~~<br>~~CQ~~<br>~~a~~|99.6W<br>~~Qe~~<br>~~CQ~~<br>|100.8W<br>~~Qe~~<br>~~CQ~~<br>|100.8W<br>~~Qe~~<br>(<br>~~CQ~~<br> **(**<br>|120W<br>~~Qe~~<br>( <br>~~CQ~~<br>**(**<br>||120W<br>~~Qe~~<br> ~~G~~<br>~~CQ~~<br>G<br>|120W<br>~~Qe~~<br>~~G~~<br>~~CQ~~<br>| ||**PEAK CURRENT**<br>~~CQ~~<br>~~se~~<br>~~a~~|12.45A<br>~~CQ~~<br>~~se~~<br>|6.3A<br>~~CQ~~<br>~~se~~<br>|3.15A<br>~~CQ~~<br>~~se~~<br> **(**<br>|15A<br>~~CQ~~<br>~~se~~<br>**(**<br>||7.5A<br>~~CQ~~<br>~~se~~<br>G<br>|3.75A<br>~~CQ~~<br>~~se~~<br>| ||**PEAK POWER**<br>**Note.5**<br>~~se~~<br>~~a~~|150W (3sec.)<br>~~se~~<br> **(**<br>|||180W (3sec.)<br>~~se~~<br>**(**<br>G<br>|||| ||**RIPPLE & NOISE (max.) Note.2**<br>~~a(OG~~<br>~~se~~|50mVp-p<br>~~(OG~~<br>~~se~~|50mVp-p<br>~~(OG~~<br>~~se~~|50mVp-p<br> **(**<br>~~(OG~~|50mVp-p<br>**(**<br>~~(OG~~<br>(||50mVp-p<br>G<br>~~(OG~~<br>O|50mVp-p<br>~~(OG~~| ||**VOLTAGE ADJ. RANGE**<br>~~(OG~~<br>~~eG~~<br>~~se~~|9 ~ 14V<br>~~(OG~~<br>~~eG~~<br>~~se~~|24 ~ 28V<br>~~(OG~~<br>~~eG~~<br>~~se~~|48 ~ 56V<br>~~(OG~~<br>~~eG~~|9 ~ 14V<br>~~(OG~~<br>~~eG~~<br>(||24 ~ 28V<br>~~(OG~~<br>~~eG~~<br>O|48 ~ 56V<br>~~(OG~~<br>~~eG~~| ||**VOLTAGE TOLERANCE Note.3**<br>~~eG~~<br>~~se~~|±1.0%<br>~~eG~~<br>~~se~~|±1.0%<br>~~eG~~<br>~~se~~|±1.0%<br>~~eG~~<br>~~QO~~|±1.0%<br>~~eG~~<br>(<br>~~QO~~||±1.0%<br>~~eG~~<br>O<br>~~QO~~|±1.0%<br>~~eG~~<br>~~QO~~| ||**LINE REGULATION**<br>~~se~~<br>~~Ge~~<br>~~ee~~|±0.5%<br>~~se~~<br>~~Ge~~<br>|±0.5%<br>~~se~~<br>~~Ge~~<br>|±0.5%<br>~~QO~~<br>QO<br>(<br>|±0.5%<br>(<br>~~QO~~<br>QO<br>(<br>||±0.5%<br>O<br>~~QO~~<br>QO<br>|±0.5%<br>~~QO~~<br>| ||**LOAD REGULATION**<br>~~Ge~~<br>~~Qe~~<br>~~ee~~|±1.0%<br>~~Ge~~<br>~~Qe~~<br>|±1.0%<br>~~Ge~~<br>~~Qe~~<br>|±1.0%<br>QO<br>~~Qe~~<br>(<br>|±1.0%<br>QO<br>~~Qe~~<br>(<br>||±1.0%<br>QO<br>~~Qe~~<br>|±1.0%<br>~~Qe~~<br>| ||**SETUP, RISE TIME**<br>~~Qe~~<br>~~ee~~<br>a|500ms, 60ms @12Vdc<br>~~Qe~~<br>(<br>~~QO~~<br>|||500ms, 60ms @24Vdc<br>~~Qe~~<br>(<br>~~QO~~<br>|||| ||**HOLD UP TIME (Typ.)**<br>~~ee~~<br>a|Please refer to page 7 Hold up Time( Load de-rating curve )<br>(<br>~~QO~~<br>||||||| ||**VOLTAGE RANGE**<br>**Note.4**<br><br>a~~GQ~~<br>~~es~~|9 ~ 18Vdc<br>~~QO~~<br>~~GQ~~<br>~~es~~|9 ~ 18Vdc<br>~~QO~~<br>~~GQ~~<br>~~es~~|9 ~ 18Vdc<br>~~QO~~<br>~~GQ~~<br>(OO|16.8 ~ 33.6Vdc<br>~~QO~~<br>~~GQ~~<br>(OO||16.8 ~ 33.6Vdc<br>~~QO~~<br>~~GQ~~<br>(OO|16.8 ~ 33.6Vdc<br>~~QO~~<br>~~GQ~~| ||**EFFICIENCY (Typ.)**<br>~~GQ~~<br>~~es~~|88.5%<br>~~GQ~~<br>~~es~~|88.5%<br>~~GQ~~<br>~~es~~|88.5%<br>~~GQ~~<br>(OO|89%<br>~~GQ~~<br>(OO||89.5%<br>~~GQ~~<br>(OO|91%<br>~~GQ~~| ||**DC CURRENT (Typ.)**<br>~~es~~<br>~~RQ~~<br>~~0~~|11.2A @12Vdc<br>~~es~~<br>(OO<br>~~RQ~~<br>~~0~~|||5.6A @24Vdc<br>(OO<br>~~RQ~~<br>~~0~~|||| ||**INRUSH CURRENT (Typ.)**<br>~~0~~|5A @12Vdc<br>~~0~~|||5A @ 24Vdc<br>~~0~~|||| ||**OVERLOAD**<br>**INTERRUPTION OF VOLTAGE SUPPLY**<br>~~0~~<br>Po|Normally works within 150% rated output power for more than 3 seconds and then constant current protection 105~135%<br>rated output power with auto-recovery<br>EN50155:2007-comply with 3ms@ full load<br>EN50155:2017-comply with S1 level<br>EN50155:2007-comply with S1 level (6ms) @ full load, S2 level (10ms) @ 70% load<br>EN50155:2017-comply with S1 level<br>~~0~~<br>~~eG~~<br>~~Qe~~<br>Po||||||| ||**OVER VOLTAGE**<br>Po|Protection type : Shut down o/p voltage, re-power on to recover<br>14.4 ~ 16.8V<br>28.8 ~ 33.6V<br>57.6 ~ 67.2V<br>14.4 ~ 16.8V<br>28.8 ~ 33.6V<br>57.6 ~ 67.2V<br>Po~~|~~||||||| ||**REVERSE POLARITY**<br><br>~~a~~<br>~~rs~~|Byinternal MOSFET, no damage, recovers automaticallyafter fault condition removed<br>~~|~~<br>~~a~~<br>~~F~~||||||| ||**UNDER VOLTAGE LOCKOUT**<br>~~a~~<br>~~rs~~|12Vin (A - type) :Power<br>V ,<br>FF<br>V<br>ON<br>9<br>O<br>8.5<br>≥<br>≤<br>~~a~~<br>~~F~~|||24Vin (B - type) :Power<br>V ,<br>FF<br>V<br>ON<br>16.8<br>O<br>16.5<br>≥<br>≤<br>~~a~~<br>~~F~~|||| ||**WORKING TEMP.**<br>~~rs~~<br>~~a~~<br>ee|-40 ~ +70<br>(Refer to "Derating Curve")<br>℃<br>~~F~~||||||| ||**WORKING HUMIDITY**<br>ee|5 ~ 95% RH non-condensing||||||| ||**STORAGE TEMP., HUMIDITY**<br>ee<br>a|-40 ~ +85<br>, 5 ~ 95% RH non-condensing<br>℃||||||| ||**TEMP. COEFFICIENT**<br>a<br>~~ee~~<br>a|±<br>℃<br>℃<br>0.03%/<br>(0 ~ 55<br>)<br>~~ee~~||||||| ||**VIBRATION**<br>~~ee~~<br>a|Component:10 ~ 500Hz, 5G 10min./1cycle, 60min. each along X, Y, Z axes; Mounting: Compliance to IEC61373<br>~~ee~~||||||| ||**OPERATING ALTITUDE**<br>a<br>a<br>~~Ct~~|5000 meters<br>~~Ct~~||||||| ||**SAFETY STANDARDS**<br>~~Ct~~<br>~~ee~~|IEC 62368-1,<br>approved; Design refer to UL508<br>UL 62368-1, EAC TP TC 004, AS/NZS 62368.1<br>~~Ct~~<br>~~ee~~||||||| ||**WITHSTAND VOLTAGE**<br>~~ee~~<br>~~a~~|I/P-O/P:4KVdc I/P-FG:2.5KVdc O/P-FG:2.5KVdc<br>~~ee~~<br>~~GG~~||||||| ||**MTBF**<br>**ISOLATION RESISTANCE**<br>**EMC IMMUNITY**<br>**EMC EMISSION**<br>**RAILWAY STANDARD**<br>~~a ~~<br>a<br>a|I/P-O/P, I/P-FG, O/P-FG:>100M Ohms / 500Vdc / 25<br>/ 70% RH<br>℃<br>**Parameter**<br>**Standard**<br>**Test Level / Note**<br> ~~GG~~<br>ee~~GG~~||||||| |||Conducted<br>ee||BS EN/EN55032<br>~~GG~~||Class B<br>~~GG~~||| |||Radiated<br>ee <br>~~GO~~||BS EN/EN55032<br> ~~GG~~<br>~~GO~~||Class B<br>~~GG~~<br>~~GO~~||| |||Voltage Flicker<br>~~OO~~||BS EN/EN61000-3-3<br>~~OO~~||-----<br>~~OO~~||| |||Harmonic Current<br>~~GG~~||-----<br>~~GG~~||-----<br>~~GG~~||| |||BS EN/EN55035 , BS EN/EN61000-6-2(BS EN/EN50082-2)<br>~~Cn~~||||||| |||**Parameter**<br>~~GG~~||**Standard**<br>~~GG~~||**Test Level / Note**<br>~~GG~~||| |||ESD<br>~~GO~~||BS EN/EN61000-4-2<br>~~GO~~||Level 3, 8KV air ; Level 3, 6KV contact; criteria A<br>~~GO~~||| |||Radiated<br>~~GO~~||BS EN/EN61000-4-3<br>~~GO~~||Level 3, 10V/m ; criteria A<br>~~GO~~||| |||EFT / Burst<br>~~GO~~<br>~~Ge~~||BS EN/EN61000-4-4<br>~~GO~~<br>~~Ge~~||Level 3, 2KV ; criteria A<br>~~GO~~<br>~~Ge~~||| |||Surge<br>~~GG~~||BS EN/EN61000-4-5<br>~~GG~~||Level 3, 1KV/Line-Line ;Level 3, 2KV/Line-Line-FG ;criteria A<br>~~GG~~||| |||Conducted<br>~~GG~~||BS EN/EN61000-4-6<br>~~GG~~||Level 3, 10V ; criteria A<br>~~GG~~||| |||Magnetic Field<br>BS EN/EN61000-4-8<br>Level 4, 30A/m ; criteria A<br>Compliance to<br>; Meet<br>EN50155 / IEC60571 including IEC61373 for shock & vibration,<br>BS EN/<br>BS EN/<br>EN45545-2 for fire protection<br>BS EN/EN50121-3-2 for EMC (except for 9~18Vin)<br>1769.5K hrs min.<br>Telcordia SR-332 (Bellcore) ; 214.5K hrs min. MIL-HDBK-217F (25<br>)<br>℃<br>~~GG~~||||||| ||**DIMENSION**<br>a<br>a|32*125.2*102mm (W*H*D)||||||| ||**PACKING**<br>℃<br>μ<br>μ<br>(as available on http://www.meanwell.com)<br>℃<br>℃<br>※<br>：<br>https://www.meanwell.com/serviceDisclaimer.aspx<br>510g; 28pcs/15.3Kg/1.22CUFT<br>a<br>a<br>1. All parameters NOT specially mentioned are measured at normal input (A:12Vdc , B:24Vdc)<br>, rated load and 25<br>of ambient temperature.<br>2. Ripple & noise are measured at20MHz of bandwidth by using a 12" twisted pair-wire terminated with<br>a0.1_<br>f<br>&47fparallel capacitor.<br>3. Tolerance: includes set up tolerance, line regulation and load regulation.<br>4. Derating may be needed under low input voltage. Please check the derating curve for more details.<br>5. 3 seconds max., please refer to peak loading curves.<br>6. The power supply is considered as an independent unit, but the final equipment still need to re-confirm that the whole system complies with<br>the EMC directives. For guidance on how to perform these EMC tests, please refer to “EMI testing of component power supplies.”<br>7. The ambient temperature derating of 3.5<br>/1000m with fanless models and of<br>5<br>/1000m with fan models for operating altitude higher than<br>2000m(6500ft).<br>Product Liability Disclaimer<br>For detailed information, please refer to|||||||| **NOTE** (as available on http://www.meanwell.com) 7. The ambient temperature derating of 3.5 ℃ /1000m with fanless models and of 5 ℃ /1000m with fan models for operating altitude higher than 2000m(6500ft). ※ Product Liability Disclaimer ： For detailed information, please refer to https://www.meanwell.com/serviceDisclaimer.aspx _File Name:DDR-120-SPEC 2022-09-20_ **- DDR 120 series** 120W DIN Rail Type DC-DC Converter ## **SPECIFICATION** |**MODEL**<br>**DC VOLTAGE**<br>**RATED CURRENT**<br>**CURRENT RANGE**<br>**RATED POWER**<br>**OUTPUT**<br>**VOLTAGE ADJ. RANGE**<br>**LINE REGULATION**<br>**LOAD REGULATION**<br>**SETUP, RISE TIME**<br>**HOLD UP TIME (Typ.)**<br>**VOLTAGE RANGE**<br>**Note.4**<br>**EFFICIENCY (Typ.)**<br>**INPUT**<br>**INRUSH CURRENT (Typ.)**<br>**SAFETY STANDARDS**<br>**WORKING TEMP.**<br>**WORKING HUMIDITY**<br>**STORAGE TEMP., HUMIDITY**<br>**TEMP. COEFFICIENT**<br>**VIBRATION**<br>**MTBF**<br>**DIMENSION**<br>**OTHERS**<br>**NOTE**<br>**PACKING**<br>**OVERLOAD**<br>**OVER VOLTAGE**<br>**DC CURRENT (Typ.)**<br>5A @48Vdc<br>Protection type : Shut down o/p voltage, re-power on to recover<br>-40 ~ +70<br>(Refer to "Derating Curve")<br>℃<br>5 ~ 95% RH non-condensing<br>-40 ~ +85<br>, 5 ~ 95% RH non-condensing<br>℃<br>±<br>℃<br>℃<br>0.03%/<br>(0 ~ 55<br>)<br>32*125.2*102mm (W*H*D)<br>**WITHSTAND VOLTAGE**<br>**ISOLATION RESISTANCE**<br>I/P-O/P:4KVdc I/P-FG:2.5KVdc O/P-FG:2.5KVdc<br>I/P-O/P, I/P-FG, O/P-FG:>100M Ohms / 500Vdc / 25<br>/ 70% RH<br>℃<br>**ENVIRONMENT**<br>**SAFETY &**<br>**EMC**<br>**(Note 6)**<br>**PROTECTION**<br>**RIPPLE & NOISE (max.) Note.2**<br>**VOLTAGE TOLERANCE Note.3**<br>℃<br>μ<br>μ<br>(as available on http://www.meanwell.com)<br>℃<br>℃<br>※<br>：<br>https://www.meanwell.com/serviceDisclaimer.aspx<br>**PEAK CURRENT**<br>**PEAK POWER**<br>**Note.5**<br>**Parameter**<br>**Parameter**<br>ESD<br>Radiated<br>EFT / Burst<br>Surge<br>Conducted<br>Magnetic Field<br>Conducted<br>Radiated<br>**Standard**<br>**Standard**<br>BS EN/EN55032<br>BS EN/EN55032<br>BS EN/EN61000-4-2<br>BS EN/EN61000-4-3<br>BS EN/EN61000-4-4<br>BS EN/EN61000-4-5<br>BS EN/EN61000-4-6<br>BS EN/EN61000-4-8<br>**Test Level / Note**<br>**Test Level / Note**<br>Class B<br>Class B<br>**EMC IMMUNITY**<br>**EMC EMISSION**<br>BS EN/EN55035 , BS EN/EN61000-6-2(BS EN/EN50082-2)<br>Level 3, 8KV air ; Level 3, 6KV contact; criteria A<br>Level 3, 10V/m ; criteria A<br>Level 4, 30A/m ; criteria A<br>Level 3, 10V ; criteria A<br>Level 3, 2KV ; criteria A<br>2.8A @48Vdc<br>**RAILWAY STANDARD**<br>**UNDER VOLTAGE LOCKOUT**<br>**DDR-120C-12**<br>**DDR-120C-24**<br>**DDR-120C-48**<br>**DDR-120D-12**<br>**DDR-120D-24**<br>91%<br>67.2 ~ 154Vdc<br>**DDR-120D-48**<br>91.5%<br>67.2 ~ 154Vdc<br>12V<br>10A<br>0 ~ 10A<br>120W<br>50mVp-p<br>9 ~ 14V<br>±1.0%<br>±0.5%<br>±1.0%<br>15A<br>180W (3sec.)<br>24V<br>5A<br>0 ~ 5A<br>120W<br>50mVp-p<br>24 ~ 28V<br>±1.0%<br>±0.5%<br>±1.0%<br>7.5A<br>48V<br>2.5A<br>0 ~ 2.5A<br>120W<br>50mVp-p<br>48 ~ 56V<br>±1.0%<br>±0.5%<br>±1.0%<br>3.75A<br>12V<br>10A<br>0 ~ 10A<br>120W<br>50mVp-p<br>9 ~ 14V<br>±1.0%<br>±0.5%<br>±1.0%<br>15A<br>24V<br>5A<br>0 ~ 5A<br>120W<br>50mVp-p<br>24 ~ 28V<br>±1.0%<br>±0.5%<br>±1.0%<br>7.5A<br>48V<br>2.5A<br>0 ~ 2.5A<br>120W<br>50mVp-p<br>48 ~ 56V<br>±1.0%<br>±0.5%<br>±1.0%<br>3.75A<br>500ms, 60ms @48Vdc<br>89.5%<br>33.6 ~ 67.2Vdc<br>91%<br>92%<br>33.6 ~ 67.2Vdc<br>89.5%<br>67.2 ~ 154Vdc<br>33.6 ~ 67.2Vdc<br>Compliance to<br>; Meet<br>EN50155 / IEC60571 including IEC61373 for shock & vibration,<br>BS EN/<br>BS EN/<br>EN45545-2 for fire protection<br>BS EN/EN50121-3-2 for EMC<br>110Vin (D - type):Power<br>V ,<br>FF<br>V<br>ON<br>67.2<br>O<br>65<br>≥<br>≤<br>48Vin (C - type) :Power<br>V ,<br>FF<br>V<br>ON<br>33.6<br>O<br>33<br>≥<br>≤<br>14.4 ~ 16.8V<br>28.8 ~ 33.6V<br>57.6 ~ 67.2V<br>14.4 ~ 16.8V<br>28.8 ~ 33.6V<br>57.6 ~ 67.2V<br>Normally works within 150% rated output power for more than 3 seconds and then constant current protection 105~135%<br>rated output power with auto-recovery<br>510g; 28pcs/15.3Kg/1.22CUFT<br>Level 3, 1KV/Line-Line ;Level 3, 2KV/Line-Line-FG ;criteria A<br>**OPERATING ALTITUDE**<br>5000 meters<br>500ms, 60ms @110Vdc<br>1.3A @110Vdc<br>5A @110Vdc<br>Component:10 ~ 500Hz, 5G 10min./1cycle, 60min. each along X, Y, Z axes; Mounting: Compliance to IEC61373<br>Voltage Flicker<br>BS EN/EN61000-3-3<br>-----<br>Harmonic Current<br>-----<br>-----<br>**REVERSE POLARITY**<br>By internal MOSFET, no damage, recovers automatically after fault condition removed<br>Please refer to page 7 Hold up Time( Load de-rating curve )<br>EN50155:2007-comply with S1 level (6ms) @ full load, S2 level (10ms) @ 60% load<br>EN50155:2017-comply with S1 level<br>**INTERRUPTION OF VOLTAGE SUPPLY**<br>EN50155:2007-comply with S2 level (10ms) @ full load<br>EN50155:2017-comply with S1 level<br>IEC 62368-1,<br>approved; Design refer to UL508<br>UL 62368-1, EAC TP TC 004, AS/NZS 62368.1<br>1769.5K hrs min.<br>Telcordia SR-332 (Bellcore) ; 214.5K hrs min. MIL-HDBK-217F (25<br>)<br>℃<br>~~Ge~~(OG<br>~~Re~~<br>Ge<br>~~QQ~~<br>~~Qe~~<br>(~~G~~<br>~~CQ~~<br>~~es~~(~~G~~<br>~~ee~~<br>~~Ge~~(OG<br>a ~~CQ~~<br>~~seQO~~<br>~~GeQO~~<br>~~Qe~~<br>(<br>~~a QO~~<br>aee ~~GQ~~<br>~~Rs~~<br>(~~G~~<br>~~eG~~<br>~~sO~~<br>~~Ge~~<br>~~Qe~~<br>Po<br>Ce<br>a~~nF~~<br>~~ee~~<br>a<br>a<br>Re<br>a<br>a~~Ct~~<br>~~ee~~<br>~~ee~~<br>~~GG~~<br>a<br>~~QO~~<br>a<br>~~GO~~<br>a<br>~~GG~~<br>~~|~~<br>~~Ge~~<br>~~Ge~~<br>~~GG~~<br>~~Ge~~<br>~~GO~~<br>~~GG~~<br>~~GG~~<br>a<br>a<br>~~ee~~<br>1. All parameters NOT specially mentioned are measured at normal input (C:48Vdc , D:110Vdc)<br>, rated load and 25 —_of ambient temperature.<br>2. Ripple & noise are measured at20MHz of bandwidth by using a 12" twisted pair-wire terminated with a 0.1<br>f& 47<br>f parallel capacitor.<br>3. Tolerance: includes set up tolerance, line regulation and load regulation.<br>4. Derating may be needed under low input voltage. Please check the derating curve for more details.<br>5. 3 seconds max., please refer to peak loading curves.<br>6. The power supply is considered as an independent unit, but the final equipment still need to re-confirm that the whole system complies with<br>the EMC directives. For guidance on how to perform these EMC tests, please refer to “EMI testing of component power supplies.”<br>7. The ambient temperature derating of 3.5<br>/1000m with fanless models and of<br>5<br>/1000m with fan models for operating altitude higher than<br>2000m(6500ft).<br>Product Liability Disclaimer<br>For detailed information, please refer to|**MODEL**<br>**DC VOLTAGE**<br>**RATED CURRENT**<br>**CURRENT RANGE**<br>**RATED POWER**<br>**OUTPUT**<br>**VOLTAGE ADJ. RANGE**<br>**LINE REGULATION**<br>**LOAD REGULATION**<br>**SETUP, RISE TIME**<br>**HOLD UP TIME (Typ.)**<br>**VOLTAGE RANGE**<br>**Note.4**<br>**EFFICIENCY (Typ.)**<br>**INPUT**<br>**INRUSH CURRENT (Typ.)**<br>**SAFETY STANDARDS**<br>**WORKING TEMP.**<br>**WORKING HUMIDITY**<br>**STORAGE TEMP., HUMIDITY**<br>**TEMP. COEFFICIENT**<br>**VIBRATION**<br>**MTBF**<br>**DIMENSION**<br>**OTHERS**<br>**NOTE**<br>**PACKING**<br>**OVERLOAD**<br>**OVER VOLTAGE**<br>**DC CURRENT (Typ.)**<br>5A @48Vdc<br>Protection type : Shut down o/p voltage, re-power on to recover<br>-40 ~ +70<br>(Refer to "Derating Curve")<br>℃<br>5 ~ 95% RH non-condensing<br>-40 ~ +85<br>, 5 ~ 95% RH non-condensing<br>℃<br>±<br>℃<br>℃<br>0.03%/<br>(0 ~ 55<br>)<br>32*125.2*102mm (W*H*D)<br>**WITHSTAND VOLTAGE**<br>**ISOLATION RESISTANCE**<br>I/P-O/P:4KVdc I/P-FG:2.5KVdc O/P-FG:2.5KVdc<br>I/P-O/P, I/P-FG, O/P-FG:>100M Ohms / 500Vdc / 25<br>/ 70% RH<br>℃<br>**ENVIRONMENT**<br>**SAFETY &**<br>**EMC**<br>**(Note 6)**<br>**PROTECTION**<br>**RIPPLE & NOISE (max.) Note.2**<br>**VOLTAGE TOLERANCE Note.3**<br>℃<br>μ<br>μ<br>(as available on http://www.meanwell.com)<br>℃<br>℃<br>※<br>：<br>https://www.meanwell.com/serviceDisclaimer.aspx<br>**PEAK CURRENT**<br>**PEAK POWER**<br>**Note.5**<br>**Parameter**<br>**Parameter**<br>ESD<br>Radiated<br>EFT / Burst<br>Surge<br>Conducted<br>Magnetic Field<br>Conducted<br>Radiated<br>**Standard**<br>**Standard**<br>BS EN/EN55032<br>BS EN/EN55032<br>BS EN/EN61000-4-2<br>BS EN/EN61000-4-3<br>BS EN/EN61000-4-4<br>BS EN/EN61000-4-5<br>BS EN/EN61000-4-6<br>BS EN/EN61000-4-8<br>**Test Level / Note**<br>**Test Level / Note**<br>Class B<br>Class B<br>**EMC IMMUNITY**<br>**EMC EMISSION**<br>BS EN/EN55035 , BS EN/EN61000-6-2(BS EN/EN50082-2)<br>Level 3, 8KV air ; Level 3, 6KV contact; criteria A<br>Level 3, 10V/m ; criteria A<br>Level 4, 30A/m ; criteria A<br>Level 3, 10V ; criteria A<br>Level 3, 2KV ; criteria A<br>2.8A @48Vdc<br>**RAILWAY STANDARD**<br>**UNDER VOLTAGE LOCKOUT**<br>**DDR-120C-12**<br>**DDR-120C-24**<br>**DDR-120C-48**<br>**DDR-120D-12**<br>**DDR-120D-24**<br>91%<br>67.2 ~ 154Vdc<br>**DDR-120D-48**<br>91.5%<br>67.2 ~ 154Vdc<br>12V<br>10A<br>0 ~ 10A<br>120W<br>50mVp-p<br>9 ~ 14V<br>±1.0%<br>±0.5%<br>±1.0%<br>15A<br>180W (3sec.)<br>24V<br>5A<br>0 ~ 5A<br>120W<br>50mVp-p<br>24 ~ 28V<br>±1.0%<br>±0.5%<br>±1.0%<br>7.5A<br>48V<br>2.5A<br>0 ~ 2.5A<br>120W<br>50mVp-p<br>48 ~ 56V<br>±1.0%<br>±0.5%<br>±1.0%<br>3.75A<br>12V<br>10A<br>0 ~ 10A<br>120W<br>50mVp-p<br>9 ~ 14V<br>±1.0%<br>±0.5%<br>±1.0%<br>15A<br>24V<br>5A<br>0 ~ 5A<br>120W<br>50mVp-p<br>24 ~ 28V<br>±1.0%<br>±0.5%<br>±1.0%<br>7.5A<br>48V<br>2.5A<br>0 ~ 2.5A<br>120W<br>50mVp-p<br>48 ~ 56V<br>±1.0%<br>±0.5%<br>±1.0%<br>3.75A<br>500ms, 60ms @48Vdc<br>89.5%<br>33.6 ~ 67.2Vdc<br>91%<br>92%<br>33.6 ~ 67.2Vdc<br>89.5%<br>67.2 ~ 154Vdc<br>33.6 ~ 67.2Vdc<br>Compliance to<br>; Meet<br>EN50155 / IEC60571 including IEC61373 for shock & vibration,<br>BS EN/<br>BS EN/<br>EN45545-2 for fire protection<br>BS EN/EN50121-3-2 for EMC<br>110Vin (D - type):Power<br>V ,<br>FF<br>V<br>ON<br>67.2<br>O<br>65<br>≥<br>≤<br>48Vin (C - type) :Power<br>V ,<br>FF<br>V<br>ON<br>33.6<br>O<br>33<br>≥<br>≤<br>14.4 ~ 16.8V<br>28.8 ~ 33.6V<br>57.6 ~ 67.2V<br>14.4 ~ 16.8V<br>28.8 ~ 33.6V<br>57.6 ~ 67.2V<br>Normally works within 150% rated output power for more than 3 seconds and then constant current protection 105~135%<br>rated output power with auto-recovery<br>510g; 28pcs/15.3Kg/1.22CUFT<br>Level 3, 1KV/Line-Line ;Level 3, 2KV/Line-Line-FG ;criteria A<br>**OPERATING ALTITUDE**<br>5000 meters<br>500ms, 60ms @110Vdc<br>1.3A @110Vdc<br>5A @110Vdc<br>Component:10 ~ 500Hz, 5G 10min./1cycle, 60min. each along X, Y, Z axes; Mounting: Compliance to IEC61373<br>Voltage Flicker<br>BS EN/EN61000-3-3<br>-----<br>Harmonic Current<br>-----<br>-----<br>**REVERSE POLARITY**<br>By internal MOSFET, no damage, recovers automatically after fault condition removed<br>Please refer to page 7 Hold up Time( Load de-rating curve )<br>EN50155:2007-comply with S1 level (6ms) @ full load, S2 level (10ms) @ 60% load<br>EN50155:2017-comply with S1 level<br>**INTERRUPTION OF VOLTAGE SUPPLY**<br>EN50155:2007-comply with S2 level (10ms) @ full load<br>EN50155:2017-comply with S1 level<br>IEC 62368-1,<br>approved; Design refer to UL508<br>UL 62368-1, EAC TP TC 004, AS/NZS 62368.1<br>1769.5K hrs min.<br>Telcordia SR-332 (Bellcore) ; 214.5K hrs min. MIL-HDBK-217F (25<br>)<br>℃<br>~~Ge~~(OG<br>~~Re~~<br>Ge<br>~~QQ~~<br>~~Qe~~<br>(~~G~~<br>~~CQ~~<br>~~es~~(~~G~~<br>~~ee~~<br>~~Ge~~(OG<br>a ~~CQ~~<br>~~seQO~~<br>~~GeQO~~<br>~~Qe~~<br>(<br>~~a QO~~<br>aee ~~GQ~~<br>~~Rs~~<br>(~~G~~<br>~~eG~~<br>~~sO~~<br>~~Ge~~<br>~~Qe~~<br>Po<br>Ce<br>a~~nF~~<br>~~ee~~<br>a<br>a<br>Re<br>a<br>a~~Ct~~<br>~~ee~~<br>~~ee~~<br>~~GG~~<br>a<br>~~QO~~<br>a<br>~~GO~~<br>a<br>~~GG~~<br>~~|~~<br>~~Ge~~<br>~~Ge~~<br>~~GG~~<br>~~Ge~~<br>~~GO~~<br>~~GG~~<br>~~GG~~<br>a<br>a<br>~~ee~~<br>1. All parameters NOT specially mentioned are measured at normal input (C:48Vdc , D:110Vdc)<br>, rated load and 25 —_of ambient temperature.<br>2. Ripple & noise are measured at20MHz of bandwidth by using a 12" twisted pair-wire terminated with a 0.1<br>f& 47<br>f parallel capacitor.<br>3. Tolerance: includes set up tolerance, line regulation and load regulation.<br>4. Derating may be needed under low input voltage. Please check the derating curve for more details.<br>5. 3 seconds max., please refer to peak loading curves.<br>6. The power supply is considered as an independent unit, but the final equipment still need to re-confirm that the whole system complies with<br>the EMC directives. For guidance on how to perform these EMC tests, please refer to “EMI testing of component power supplies.”<br>7. The ambient temperature derating of 3.5<br>/1000m with fanless models and of<br>5<br>/1000m with fan models for operating altitude higher than<br>2000m(6500ft).<br>Product Liability Disclaimer<br>For detailed information, please refer to|**DDR-120C-12**|**DDR-120C-24**|**DDR-120C-48**|**DDR-120D-12**|**DDR-120D-12**|**DDR-120D-24**|**DDR-120D-48**| |---|---|---|---|---|---|---|---|---| ||**DC VOLTAGE**<br>~~Ge~~|12V<br>~~Ge~~<br>Ge|24V<br>~~Ge~~<br>Ge|48V<br>~~Ge~~|12V<br>(OG<br>~~QQ~~||24V<br>(OG<br>~~QQ~~|48V<br>(OG<br>~~QQ~~| ||**RATED CURRENT**<br>~~Ge~~<br>~~Re~~|10A<br>~~Ge~~<br>~~Re~~<br>Ge|5A<br>~~Ge~~<br>~~Re~~<br>Ge|2.5A<br>~~Ge~~<br>~~Re~~<br>(|10A<br>(OG<br>~~QQ~~<br>(||5A<br>(OG<br>~~QQ~~<br>|2.5A<br>(OG<br>~~QQ~~<br>| ||**CURRENT RANGE**<br>~~Re~~<br>~~Qe~~|0 ~ 10A<br>~~Re~~<br>Ge<br>~~Qe~~|0 ~ 5A<br>~~Re~~<br>Ge<br>~~Qe~~|0 ~ 2.5A<br>~~Re~~<br>~~Qe~~<br>(|0 ~ 10A<br>~~QQ~~<br>(~~G~~||0 ~ 5A<br>~~QQ~~<br>~~G~~|0 ~ 2.5A<br>~~QQ~~<br>~~G~~| ||**RATED POWER**<br>~~Qe~~<br>~~CQ~~<br>~~es~~|120W<br>~~Qe~~<br>~~CQ~~<br>~~es~~|120W<br>~~Qe~~<br>~~CQ~~<br>~~es~~|120W<br>~~Qe~~<br>(<br>~~CQ~~<br>~~es~~|120W<br>(~~G~~<br>(||120W<br>~~G~~<br>|120W<br>~~G~~<br>| ||**PEAK CURRENT**<br>~~CQ~~<br>~~es~~|15A<br>~~CQ~~<br>~~es~~|7.5A<br>~~CQ~~<br>~~es~~|3.75A<br>~~CQ~~<br>~~es~~|15A<br>(~~G~~||7.5A<br>~~G~~|3.75A<br>~~G~~| ||**PEAK POWER**<br>**Note.5**<br>~~es~~<br>~~ee~~|180W (3sec.)<br>~~es~~(~~G~~<br>~~ee~~||||||| ||**RIPPLE & NOISE (max.) Note.2**<br>~~ee~~<br>~~Ge~~|50mVp-p<br>~~ee~~<br>~~Ge~~|50mVp-p<br>~~ee~~<br>~~Ge~~|50mVp-p<br>~~ee~~<br>~~Ge~~|50mVp-p<br>~~ee~~<br>(OG||50mVp-p<br>~~ee~~<br>(OG|50mVp-p<br>~~ee~~<br>(OG| ||**VOLTAGE ADJ. RANGE**<br>~~Ge~~<br>a|9 ~ 14V<br>~~Ge~~<br>~~CQ~~|24 ~ 28V<br>~~Ge~~<br>~~CQ~~|48 ~ 56V<br>~~Ge~~<br>~~CQ~~|9 ~ 14V<br>(OG||24 ~ 28V<br>(OG|48 ~ 56V<br>(OG| ||**VOLTAGE TOLERANCE Note.3**<br>a <br>~~se~~|±1.0%<br> ~~CQ~~<br>~~se~~|±1.0%<br>~~CQ~~<br>~~se~~|±1.0%<br>~~CQ~~<br>~~se~~|±1.0%<br>~~QO~~||±1.0%<br>~~QO~~|±1.0%<br>~~QO~~| ||**LINE REGULATION**<br>~~se~~<br>~~Ge~~<br>~~a~~|±0.5%<br>~~se~~<br>~~Ge~~<br>|±0.5%<br>~~se~~<br>~~Ge~~<br>|±0.5%<br>~~se~~<br>~~Ge~~<br>(<br>|±0.5%<br>~~QO~~<br>~~QO~~<br>(<br>||±0.5%<br>~~QO~~<br>~~QO~~<br>|±0.5%<br>~~QO~~<br>~~QO~~<br>| ||**LOAD REGULATION**<br>~~Ge~~<br>~~Qe~~<br>~~a~~|±1.0%<br>~~Ge~~<br>~~Qe~~<br>|±1.0%<br>~~Ge~~<br>~~Qe~~<br>|±1.0%<br>~~Ge~~<br>~~Qe~~<br>(<br>|±1.0%<br>~~QO~~<br>(<br>||±1.0%<br>~~QO~~<br>|±1.0%<br>~~QO~~<br>| ||**SETUP, RISE TIME**<br>~~Qe~~<br>~~a QO~~<br>a|500ms, 60ms @48Vdc<br>~~Qe~~<br>(<br>~~QO~~<br>|||500ms, 60ms @110Vdc<br>(<br>~~QO~~<br>|||| ||**HOLD UP TIME (Typ.)**<br>~~a QO~~<br>aee|Please refer to page 7 Hold up Time( Load de-rating curve )<br>(<br>~~QO~~<br>~~GQ~~||||||| ||**VOLTAGE RANGE**<br>**Note.4**<br>~~QO~~<br>aee|33.6 ~ 67.2Vdc<br>~~QO~~<br>~~GQ~~|33.6 ~ 67.2Vdc<br>~~QO~~<br>~~GQ~~|33.6 ~ 67.2Vdc<br>~~QO~~<br>~~GQ~~<br>(|67.2 ~ 154Vdc<br>~~QO~~<br>~~GQ~~<br>(||67.2 ~ 154Vdc<br>~~QO~~<br>~~GQ~~<br>|67.2 ~ 154Vdc<br>~~QO~~<br>~~GQ~~<br>| ||**EFFICIENCY (Typ.)**<br>ee <br>~~Rs~~|89.5%<br> ~~GQ~~<br>~~Rs~~|91%<br>~~GQ~~<br>~~Rs~~|92%<br>~~GQ~~<br>~~Rs~~<br>(|89.5%<br>~~GQ~~<br>(~~G~~||91%<br>~~GQ~~<br>~~G~~|91.5%<br>~~GQ~~<br>~~G~~| ||**DC CURRENT (Typ.)**<br>~~Rs~~<br>~~eG~~<br>~~sO~~|2.8A @48Vdc<br>~~Rs~~<br>(<br>~~eG~~<br>~~sO~~|||1.3A @110Vdc<br>(~~G~~<br>~~eG~~<br>~~sO~~|||| ||**INRUSH CURRENT (Typ.)**<br>~~sO~~|5A @48Vdc<br>~~sO~~|||5A @110Vdc<br>~~sO~~|||| ||**OVERLOAD**<br>**INTERRUPTION OF VOLTAGE SUPPLY**<br>~~sO~~|Normally works within 150% rated output power for more than 3 seconds and then constant current protection 105~135%<br>rated output power with auto-recovery<br>EN50155:2007-comply with S1 level (6ms) @ full load, S2 level (10ms) @ 60% load<br>EN50155:2017-comply with S1 level<br>EN50155:2007-comply with S2 level (10ms) @ full load<br>EN50155:2017-comply with S1 level<br>~~sO~~<br>~~Ge~~<br>~~Qe~~||||||| ||**OVER VOLTAGE**|Protection type : Shut down o/p voltage, re-power on to recover<br>14.4 ~ 16.8V<br>28.8 ~ 33.6V<br>57.6 ~ 67.2V<br>14.4 ~ 16.8V<br>28.8 ~ 33.6V<br>57.6 ~ 67.2V<br>Po<br>Ce||||||| ||**REVERSE POLARITY**<br>a|By internal MOSFET, no damage, recovers automatically after fault condition removed<br>Ce<br>||||||| ||**UNDER VOLTAGE LOCKOUT**<br>a~~nF~~|48Vin (C - type) :Power<br>V ,<br>FF<br>V<br>ON<br>33.6<br>O<br>33<br>≥<br>≤<br>~~nF~~|||110Vin (D - type):Power<br>V ,<br>FF<br>V<br>ON<br>67.2<br>O<br>65<br>≥<br>≤<br>~~nF~~|||| ||**WORKING TEMP.**<br>~~nF~~<br>~~ee~~|-40 ~ +70<br>(Refer to "Derating Curve")<br>℃<br>~~nF~~<br>~~ee~~||||||| ||**WORKING HUMIDITY**<br>a|5 ~ 95% RH non-condensing||||||| ||**STORAGE TEMP., HUMIDITY**<br>a<br>a<br>Re|-40 ~ +85<br>, 5 ~ 95% RH non-condensing<br>℃||||||| ||**TEMP. COEFFICIENT**<br>a<br>Re|±<br>℃<br>℃<br>0.03%/<br>(0 ~ 55<br>)||||||| ||**VIBRATION**<br>Re<br>a|Component:10 ~ 500Hz, 5G 10min./1cycle, 60min. each along X, Y, Z axes; Mounting: Compliance to IEC61373||||||| ||**OPERATING ALTITUDE**<br>a|5000 meters<br>||||||| ||**SAFETY STANDARDS**<br>a~~Ct~~|IEC 62368-1,<br>approved; Design refer to UL508<br>UL 62368-1, EAC TP TC 004, AS/NZS 62368.1<br>~~Ct~~||||||| ||**WITHSTAND VOLTAGE**<br>~~Ct~~<br>~~ee~~|I/P-O/P:4KVdc I/P-FG:2.5KVdc O/P-FG:2.5KVdc<br>~~Ct~~<br>~~ee~~||||||| ||**ISOLATION RESISTANCE**<br>**EMC IMMUNITY**<br>**EMC EMISSION**<br>~~ee~~<br>~~ee~~|I/P-O/P, I/P-FG, O/P-FG:>100M Ohms / 500Vdc / 25<br>/ 70% RH<br>℃<br>**Parameter**<br>**Standard**<br>**Test Level / Note**<br>~~ee~~<br>~~ee~~<br>~~GG~~||||||| |||Conducted<br>a<br>~~QO~~||BS EN/EN55032<br>~~QO~~||Class B<br>~~QO~~||| |||Radiated<br>a<br>~~QO~~<br>a<br>~~GO~~||BS EN/EN55032<br>~~QO~~<br>~~GO~~||Class B<br>~~QO~~<br>~~GO~~||| |||Voltage Flicker<br>a||BS EN/EN61000-3-3||-----||| |||Harmonic Current<br>~~GG~~||-----<br>~~GG~~||-----<br>~~GG~~||| |||BS EN/EN55035 , BS EN/EN61000-6-2(BS EN/EN50082-2)<br>~~GG~~<br>~~|~~||||||| |||**Parameter**<br>~~|~~<br>~~Ge~~||**Standard**<br>~~|~~<br>~~Ge~~||**Test Level / Note**<br>~~|~~<br>~~Ge~~||| |||ESD<br>~~Ge~~||BS EN/EN61000-4-2<br>~~Ge~~||Level 3, 8KV air ; Level 3, 6KV contact; criteria A<br>~~Ge~~||| |||Radiated<br>~~GG~~||BS EN/EN61000-4-3<br>~~GG~~||Level 3, 10V/m ; criteria A<br>~~GG~~||| |||EFT / Burst<br>~~GG~~<br>~~Ge~~||BS EN/EN61000-4-4<br>~~GG~~<br>~~Ge~~||Level 3, 2KV ; criteria A<br>~~GG~~<br>~~Ge~~||| |||Surge<br>~~GO~~||BS EN/EN61000-4-5<br>~~GO~~||Level 3, 1KV/Line-Line ;Level 3, 2KV/Line-Line-FG ;criteria A<br>~~GO~~||| |||Conducted<br>~~GG~~||BS EN/EN61000-4-6<br>~~GG~~||Level 3, 10V ; criteria A<br>~~GG~~||| |||Magnetic Field<br>~~GG~~||BS EN/EN61000-4-8<br>~~GG~~||Level 4, 30A/m ; criteria A<br>~~GG~~||| ||**RAILWAY STANDARD**|Compliance to<br>; Meet<br>EN50155 / IEC60571 including IEC61373 for shock & vibration,<br>BS EN/<br>BS EN/<br>EN45545-2 for fire protection<br>BS EN/EN50121-3-2 for EMC<br>~~GG~~||||||| ||**MTBF**<br>a|1769.5K hrs min.<br>Telcordia SR-332 (Bellcore) ; 214.5K hrs min. MIL-HDBK-217F (25<br>)<br>℃||||||| ||**DIMENSION**<br>a|32*125.2*102mm (W*H*D)||||||| ||**PACKING**<br>℃<br>μ<br>μ<br>(as available on http://www.meanwell.com)<br>℃<br>℃<br>※<br>：<br>https://www.meanwell.com/serviceDisclaimer.aspx<br>510g; 28pcs/15.3Kg/1.22CUFT<br>a<br>~~ee~~<br>1. All parameters NOT specially mentioned are measured at normal input (C:48Vdc , D:110Vdc)<br>, rated load and 25 —_of ambient temperature.<br>2. Ripple & noise are measured at20MHz of bandwidth by using a 12" twisted pair-wire terminated with a 0.1<br>f& 47<br>f parallel capacitor.<br>3. Tolerance: includes set up tolerance, line regulation and load regulation.<br>4. Derating may be needed under low input voltage. Please check the derating curve for more details.<br>5. 3 seconds max., please refer to peak loading curves.<br>6. The power supply is considered as an independent unit, but the final equipment still need to re-confirm that the whole system complies with<br>the EMC directives. For guidance on how to perform these EMC tests, please refer to “EMI testing of component power supplies.”<br>7. The ambient temperature derating of 3.5<br>/1000m with fanless models and of<br>5<br>/1000m with fan models for operating altitude higher than<br>2000m(6500ft).<br>Product Liability Disclaimer<br>For detailed information, please refer to|||||||| _File Name:DDR-120-SPEC 2022-09-20_ **- DDR 120 series** 120W DIN Rail Type DC-DC Converter **==> picture [511 x 668] intentionally omitted <==** **----- Start of picture text -----**<br> Block Diagram<br>fosc : 65KHz<br>EMI POWER RECTIFIERS +Vo<br>I/P FILTER SWITCHING & -Vo<br>FILTER<br>FG DETECTION<br>PWM CIRCUIT<br>O.L.P.<br>CONTROL<br>O.V.P.<br>Derating Curve Output derating VS input voltage<br>100<br>90<br>150 85<br>80 B/C/D Type<br>120 For 3 sec. (typ.)<br>100 70 A Type<br>80 60<br>Continuous<br>50<br>40<br>40<br>-40 -30 -20 -10 0 10 20 30 40 50 55 60 70 A Type: 9 10.8 12 15 18<br>(VERTICAL) B Type: 16.8 21.6 24 30 33.6<br>C Type: 33.6 43.2 48 60 67.2<br>D Type: 67.2 86.4 96 110 154<br>AMBIENT TEMPERATURE ( ℃ ) INPUT VOLTAGE<br>Peak Loading<br>( 1 ) ( 2 )<br>150% Load 150% Load<br>100% Load 40% Load<br>100 sec. 3 sec. 10 sec. 3 sec.<br>LOAD (%) LOAD (%)<br>**----- End of picture text -----**<br> _File Name:DDR-120-SPEC 2022-09-20_ **- DDR 120 series** 120W DIN Rail Type DC-DC Converter ## **Input Fuse** There is a fuse connected in series to the positive input line, which is used to protect against abnormal surge. Fuse specifications of each model are shown as below. |Type|Fuse Type|Reference and Rating| |---|---|---| |A|Time-Lag|Conquer MST, 10A, 250V *2| |B|Time-Lag|Conquer MST, 8A, 250V *2| |C|Time-Lag|Conquer MST, 8A, 250V *1| |D|Time-Lag|Conquer MST, 4A, 250V *1| ## **Input Under-Voltage Protection** If input voltage drops below Vimin, the internal control IC shuts down and there is no output voltage. It recovers automatically when input voltage reaches above Vimin,please refer to the cruve below. **==> picture [68 x 10] intentionally omitted <==** **----- Start of picture text -----**<br> DDR-120A-24<br>**----- End of picture text -----**<br> **==> picture [202 x 288] intentionally omitted <==** **----- Start of picture text -----**<br> Vo 30<br>25<br>20<br>15 Turn On<br>Turn Off<br>10<br>5<br>0 8. 5 Vin<br>8 9 10 15 16 17<br>DDR-120C-24<br>Vo 30<br>25<br>20<br>15 Turn On<br>Turn Off<br>10<br>5<br>33.6<br>0 Vin<br>31 33 34 35 36 37<br>**----- End of picture text -----**<br> **==> picture [201 x 122] intentionally omitted <==** **----- Start of picture text -----**<br> DDR-120B-24<br>Vo 30<br>25<br>20<br>15 Turn On<br>Turn Off<br>10<br>5<br>0 16. 5 16.8 Vin<br>15 16 17 18 19 20<br>**----- End of picture text -----**<br> **==> picture [69 x 9] intentionally omitted <==** **----- Start of picture text -----**<br> DDR-120D-24<br>**----- End of picture text -----**<br> **==> picture [201 x 105] intentionally omitted <==** **----- Start of picture text -----**<br> Vo 30<br>25<br>20<br>15 Turn On<br>Turn Off<br>10<br>5<br>65 67.2<br>0 Vin<br>65 66 67 68 69 70<br>**----- End of picture text -----**<br> _File Name:DDR-120-SPEC 2022-09-20_ **- DDR 120 series** ## **120W DIN Rail Type DC-DC Converter** ## [|] **Input Reverse Polarity Protection** There is a MOSFET connected in series to the negative input line. If the input polarity is connected reversely, the MOSFET opens and there will be no output to protect the unit. ## **Input Range and Transient Ability** The series has a wide range input capability. With -30% / +40% of rated input voltage(except A Type), it can withstand that for 1 second. ## **Inrush Current** Inrush current is suppressed by a current limit circuit during the initial start-up, and then the circuit is bypassed by a MOSFET to reduce power consumption after accomplishing the start-up. Power start Normal current Inrush current limit re _File Name:DDR-120-SPEC 2022-09-20_ **- DDR 120 series** ## **120W DIN Rail Type DC-DC Converter** **Hold-up Time** EN50155: 2007 version -D type is in compliance with S2 level (10ms), while A types are in compliance with S1 level (3ms) at full load output condition. To fulfil the requirements of S2 level (10ms), B types require de-rating their output load to 70%, C types require de-rating their output load to 60%, please refer to the curve diagrams below. **==> picture [501 x 591] intentionally omitted <==** **----- Start of picture text -----**<br> DDR-120A-12 DDR-120A-24 DDR-120A-48<br>100% 100% 100%<br>90% 90% 90%<br>80% 80% 80%<br>70% 70% 70%<br>60% 60% 60%<br>50% 50% 50%<br>40% 40% 40%<br>30% 30% 30%<br>20% 20% 20%<br>10% 10% 10%<br>0% 0% 0%<br>0ms 10ms 20ms 30ms 40ms 50ms 60ms 0ms 10ms 20ms 30ms 40ms 50ms 60ms 0ms 10ms 20ms 30ms 40ms 50ms 60ms<br>TIME TIME TIME<br>DDR-120B-12 DDR-120B-24 DDR-120B-48<br>100% 100% 100%<br>90% 90% 90%<br>80% 80% 80%<br>70% 70% 70%<br>60% 60% 60%<br>50% 50% 50%<br>40% 40% 40%<br>30% 30% 30%<br>20% 20% 20%<br>10% 10% 10%<br>0% 0% 0%<br>0ms 10ms 20ms 30ms 40ms 50ms 60ms 70ms 0ms 10ms 20ms 30ms 40ms 50ms 60ms 70ms 80ms 90ms 0ms 10ms 20ms 30ms 40ms 50ms 60ms 70ms 80ms 90ms<br>TIME TIME TIME<br>DDR-120C-12 DDR-120C-24 DDR-120C-48<br>100% 100% 100%<br>90% 90% 90%<br>80% 80% 80%<br>70% 70% 70%<br>60% 60% 60%<br>50% 50% 50%<br>40% 40% 40%<br>30% 30% 30%<br>20% 20% 20%<br>10% 10% 10%<br>0% 0% 0%<br>0ms 10ms 20ms 30ms 40ms 50ms 60ms 70ms 80ms 0ms 10ms 20ms 30ms 40ms 50ms 60ms 70ms 80ms 0ms 10ms 20ms 30ms 40ms 50ms 60ms 70ms 80ms<br>TIME TIME TIME<br>DDR-120D-12 DDR-120D-24 DDR-120D-48<br>100% 100% 100%<br>90% 90% 90%<br>80% 80% 80%<br>70% 70% 70%<br>60% 60% 60%<br>50% 50% 50%<br>40% 40% 40%<br>30% 30% 30%<br>20% 20% 20%<br>10% 10% 10%<br>0% 0% 0%<br>0ms 10ms 20ms 30ms 40ms 50ms 60ms 70ms 80ms 0ms 10ms 20ms 30ms 40ms 50ms 60ms 70ms 80ms 90ms 100ms 110ms 120ms 130ms 0ms10ms 20ms 30ms 40ms 50ms 60ms 70ms 80ms 90ms 100ms 110ms 120ms 130ms<br>TIME TIME TIME<br>EN50155: 2017 version - Comply with S1 level (6ms)<br>LOAD LOAD LOAD<br>LOAD LOAD LOAD<br>LOAD LOAD LOAD<br>LOAD LOAD LOAD<br>**----- End of picture text -----**<br> _File Name:DDR-120-SPEC 2022-09-20_ **- DDR 120 series** 120W DIN Rail Type DC-DC Converter ## **Efficiency vs Load & Vin Curve** **==> picture [485 x 558] intentionally omitted <==** **----- Start of picture text -----**<br> The efficiency vs load & Vin curves of each model are shown as below.<br>DDR-120A-12 DDR-120A-24 DDR-12A-48<br>95% 95% 95%<br>90% 90% 90%<br>85% 12Vdc 85% 12Vdc 85% 12Vdc<br>80% 15.6Vdc 80% 15.6Vdc 80% 15.6Vdc<br>10.8Vdc 10.8Vdc 10.8Vdc<br>75% 75% 75%<br>70% 70% 70%<br>10% 20% 30% 40% 50% 60% 70% 80% 90% 100% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100%<br>LOAD LOAD LOAD<br>DDR-120B-12 DDR-120B-24 DDR-120B-48<br>95% 95% 95%<br>90% 90% 90%<br>85% 24Vdc 85% 24Vdc 85% 24Vdc<br>80% 31.2Vdc 80% 31.2Vdc 80% 31.2Vdc<br>16.8Vdc 16.8Vdc 16.8Vdc<br>75% 75% 75%<br>70% 70% 70%<br>10% 20% 30% 40% 50% 60% 70% 80% 90% 100% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100%<br>LOAD LOAD LOAD<br>DDR-120C-12 DDR-120C-24 DDR-120C-48<br>95% 95% 95%<br>90% 90% 90%<br>85% 85% 85%<br>80% 48Vdc33.6Vdc 80% 48Vdc33.6Vdc 80% 48Vdc33.6Vdc<br>75% 67.2Vdc 75% 67.2Vdc 75% 67.2Vdc<br>70% 70% 70%<br>65% 65% 65%<br>10% 20% 30% 40% 50% 60% 70% 80% 90% 100% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100%<br>LOAD LOAD LOAD<br>DDR-120D-12 DDR-120D-24 DDR-120D-48<br>95% 95% 95%<br>90% 90% 90%<br>85% 85% 85%<br>80% 110Vdc 80% 110Vdc 80% 110Vdc<br>75% 77Vdc 75% 77Vdc 75% 77Vdc<br>70% 143Vdc 70% 143Vdc 70% 143Vdc<br>65% 65% 65%<br>60% 60% 60%<br>10% 20% 30% 40% 50% 60% 70% 80% 90% 100% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100%<br>LOAD LOAD LOAD<br>EFFICIENCY EFFICIENCY EFFICIENCY<br>EFFICIENCY EFFICIENCY EFFICIENCY<br>EFFICIENCY EFFICIENCY EFFICIENCY<br>EFFICIENCY EFFICIENCY EFFICIENCY<br>**----- End of picture text -----**<br> _File Name:DDR-120-SPEC 2022-09-20_ **- DDR 120 series** 120W DIN Rail Type DC-DC Converter ## **Immunity to Environmental Conditions** |Test method|Standard|Test conditions|Status| |---|---|---|---| |Cooling Test|EN 50155 section 12.2.3 (Column 2, Class TX)<br>EN 60068-2-1|Temperature: -40℃<br>Dwell Time: 2 hrs/cycle|No damage| |Dry Heat Test|EN 50155 section 12.2.4 (Column 2, Class TX)<br>EN 50155 section 12.2.4 (Column 3, Class TX & Column 4, Class TX)<br>EN 60068-2-2|Temperature: 70<br>/ 85<br>℃<br>℃<br>Duration: 6 hrs / 10min|PASS| |Damp Heat Test, Cyclic|EN 50155 section 12.2.5<br>EN 60068-2-30|Temperature: 25<br>~55<br>℃<br>℃<br>Humidity: 90%~100% RH<br>Duration: 48 hrs|PASS| |Vibration Test|EN 50155 section 12.2.11<br>EN 61373|Temperature: 19℃<br>Humidity: 65%<br>Duration: 10 mins|PASS| |Increased Vibration Test|EN 50155 section 12.2.11<br>EN 61373|Temperature: 19℃<br>Humidity: 65%<br>Duration: 5 hrs|PASS| |Shock Test|EN 50155 section 12.2.11<br>EN 61373|Temperature: 21<br>3<br>± ℃<br>Humidity: 65<br>5%<br>±<br>Duration: 30ms*18|PASS| |Low Temperature Storage Test|EN 50155 section 12.2.3 (Column 2, Class TX)<br>EN 60068-2-1|Temperature: -40℃<br>Dwell Time: 16 hrs|PASS| |Salt Mist Test|EN 50155 section 12.2.10 (Class ST4)|Temperature: 35<br>2<br>℃± ℃<br>Duration: 96 hrs|PASS| ## **EN45545-2 Fire Test Conditions** |**EN45545-2 Fire Test Conditions**|**EN45545-2 Fire Test Conditions**|**EN45545-2 Fire Test Conditions**|**EN45545-2 Fire Test Conditions**|**EN45545-2 Fire Test Conditions**|**EN45545-2 Fire Test Conditions**| |---|---|---|---|---|---| |Test Items<br>Hazard Level|||||| ||Items|Standard|HL1|HL2|HL3| |R22|Oxygen index test|EN 45545-2:2013<br>EN ISO 4589-2:1996|PASS|PASS|PASS| ||Smoke density test|EN 45545-2:2013<br>EN ISO 5659-2:2006|PASS|PASS|PASS| ||Smoke toxicity test|EN 45545-2:2013<br>NF X70-100:2006|PASS|PASS|PASS| |R24|Oxygen index test|EN 45545-2:2013<br>EN ISO 4589-2:1996|PASS|PASS|PASS| |R25|Glow-wire test|EN 45545-2:2013<br>EN 60695-2-11:2000|PASS|PASS|PASS| |R26|Vertical flame test|EN 45545-2:2013<br>EN 60695-11:2003|PASS|PASS|PASS| _File Name:DDR-120-SPEC 2022-09-20_ **- DDR 120 series** 120W DIN Rail Type DC-DC Converter ## **Mechanical Specification** **==> picture [449 x 494] intentionally omitted <==** **----- Start of picture text -----**<br> Case No. Unit:mm<br>32<br>Terminal Pin No. Assignment (TB2)<br>Pin No. Assignment<br>1,2 DC Output -Vo<br>3,4 DC Output +Vo<br>Top View<br>102<br>TB2<br>1 2 3 4<br>(No Use)<br>��Adj.�<br>1 2 3<br>TB1<br>Side View Front View Side View<br>Terminal Pin No. Assignment (TB1)<br>Pin No. Assignment<br>1 FG<br>2 DC Input -Vin<br>3 DC Input +Vin<br>ADMISSIBLE DIN-RAIL:TS35/7.5 OR TS35/15<br>Bottom View<br>125.2<br>35<br>**----- End of picture text -----**<br> ## **Installation Manual** Please refer to : http://www.meanwell.com/manual.html _File Name:DDR-120-SPEC 2022-09-20_
Updated at April 22, 2026
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