FLS250-1324

OPEN FRAME

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Manufacturer: BEL / PARTNER STOCK
Product type: AC / DC Open Frame Power Supplies
SVHC: No SVHC (25-Jun-2025)
Delivery and price
Units per pack	3
Price	176.18 €
Current stock	10+
Lead time	30 days
Datasheet
**ITE Grade AC-DC Power Supplies** 

**Silent 250 Watt** 

## **250 Watt** 

## l 4.5 x 2.5 X 1.5 

- l Mounting as per 4 X 2 footprint / 3 X 5 footprint 

- l 250 Watt Convection Cooled & 350 Watt Forced Cooled 

- l Efficiency up to 94% 

- l -40 to 70 degree operating temperature 

- l High power density: 20.74 W/inch[3] 

- l 12 V Fan O/P / Thermal Shut-Down feature / Dual fusing 

- l Current Sharing  (optional with ADD-ON card) 

- l 5 V STBY / PGPF Signal / Remote ON-OFF Feature (optional ) 

- l 800K Hours, Telcordia -SR332-issue 3 MTBF 

- l No Load Power < 1W 

- l Available with metal enclosures / accessories 

**Dimension** The New FLS250 series is true fanless power up to 250W. this is a highly efficient power supply that can deliver up to 350W with air. The power supply is packed in 4.5” x 2.5” size having the **FLS :** 4.5 x 2.5 x 1.5 Inches option of industry-standard 2” x 4” or 3” x 5” like a mounting option. Also available in various Form factor type of casing option. 

Form factor 

## ~~**250 Watts**~~ 

|**Model Number                         Description                       Voltage          Max. Load       Max. Load        Min. Load          Ripple**1|
|---|
|**(Convection)     (375 LFM)**|
|FLS250-1X12<br>FLS250-1X12<br>FLS250-1X15<br>FLS250-1X15<br>FLS250-1X24<br>FLS250-1X24<br>FLS250-1X30<br>FLS250-1X30<br>FLS250-1X48<br>FLS250-1X48<br>FLS250-1X58<br>FLS250-1X58<br>with Screw Terminal<br>with JST Connector<br>with Screw Terminal<br>with JST Connector<br>with Screw Terminal<br>with JST Connector<br>with Screw Terminal<br>with JST Connector<br>with Screw Terminal<br>with JST Connector<br>with Screw Terminal<br>with JST Connector<br>12V<br>12V<br>15V<br>15V<br>24V<br>24V<br>30V<br>30V<br>48V<br>48V<br>58V<br>58V<br>16.60A<br>16.60A<br>13.30A<br>13.30A<br>10.41A<br>10.41A<br>8.30A<br>8.30A<br>5.20A<br>5.20A<br>4.30A<br>4.30A<br>25.00A<br>18.00A<br>20.00A<br>18.00A<br>14.50A<br>14.50A<br>11.60A<br>11.60A<br>7.20A<br>7.20A<br>6.0A<br>6.0A<br>0.0A<br>0.0A<br>0.0A<br>0.0A<br>0.0A<br>0.0A<br>0.0A<br>0.0A<br>0.0A<br>0.0A<br>0.0A<br>0.0A<br>2%<br>2%<br>2%<br>2%<br>1%<br>1%<br>1%<br>1%<br>1%<br>1%<br>1%<br>1%<br>~~Ne a~~<br>~~eees~~<br>~~rs~~<br>~~rs~~<br>~~eeesGr~~<br>~~es esGe~~<br>~~ReGe GQ~~<br>~~a~~<br>~~esGD~~<br>~~esesGs GO~~<br>~~a~~<br>~~ers rs~~<br>~~rs~~<br>~~rsGG~~<br>~~QO~~<br>~~es~~<br>~~rsGr~~<br>~~esGQ~~<br>~~Cs~~|



Notes: 

- For Screw Terminal version replace “X” above with “0”, example FLS250-1024. 

- For Header version replace “X” above with “3”, example FLS250-1324 

- Add Suffix “H” for I/P voltage operation up to 305VAC,example: FLS250-1024-H 

- Add Suffix “B“ for 3 X 5 Mounting option, example FLS250-1024-B 

- For Power supply unit with L bracket (metal accessory option) add “-L” suffix at the end of model number 

- For Power supply unit with U channel (metal accessory option) add “-U” suffix at the end of model number 

- ~~For Power supply unit with CK Cover kit (metal accessory opton) add “-CK” sufx at the end of model number~~ 

4EM-22-011                                                                                      1                                                                               39-DE60-40553-002 / A1 

**www.eospower.com** 

**ITE Grade AC-DC Power Supplies** 

**Silent 250 Watt** 

- For Current Sharing (ADD-ON CARD) Option, (pls contact EOS RSM for further details and ordering) 

- For 5V STBY / Remote ON-OFF / PGPF use model number FLS250-2XXX, (pls contact EOS RSM for further details and ordering). 

- FLS250 -L Bracket, -U channel, - CK Metal Cover Kit Accessory Available. (pls contact EOS RSM for further details and ordering) 

|**Pin Connection**|||
|---|---|---|
|J1 (Input)|PIN 1|AC LINE|
||PIN 2|NOT FITTED|
||PIN 3|AC NEUTRAL|
|J2 Option 1 & 2|PIN 1,2,3|V1 +VE|
|(Output)|PIN 4,5,6|V1 -VE|
|J4 (Earth)||Quick Disconnect|
|(J9)|PIN 1|+VS|
|Signal Connector|PIN 2|-VS|
||PIN 3|FAN -|
||PIN 4|FAN +|
|J(310)|PIN 1|+5V|
|(Multifunction Connector)***|PIN 2|GND|
||PIN 3|GND|
||PIN 4|REMOTE ON/OFF|
||PIN5|PGPF|



## ~~Notes:~~ 

1. ”***” mark content available only in FLS250-2XXX series 

2. Ripple is peak to peak with 20 MHz bandwidth and 10 μF (Electrolytic capacitor) in parallel with a 0.1 μF capacitor at rated line voltage and load ranges. 

3. Specifications are for nominal input voltage, 25°C unless otherwise stated. 

4. 250W with natural convecton cooling at 100 to 264VAC. 

~~5. 350W with Forced cooling at 100 to 264VAC.~~ 

~~6. Combine Output Power of Main Output, Fan supply and Standby shall not exceed max power ratng.~~ 

~~7. Output ripple can be more than 1 % of the output voltage.~~ 

~~8. When used in Cover Kit, de-rate output power to 70% under all operatng conditons.~~ 

9. ”***” Standby output voltage 5 V/ 0.5A(convection) with tolerance including set point accuracy, line and load regulation is +/-10 %.Ripple and noise  is less than 5 %. 

## ~~**Input**~~ 

|~~**Input**~~||||
|---|---|---|---|
|**Characteristic                           Minimum         Typical      Maximum          Units           Notes & Conditions**|**Characteristic                           Minimum         Typical      Maximum          Units           Notes & Conditions**|**Characteristic                           Minimum         Typical      Maximum          Units           Notes & Conditions**|**Characteristic                           Minimum         Typical      Maximum          Units           Notes & Conditions**|
|Input Voltage|85<br>264|VAC|De-rate linearlyfrom 100% at 100VAC to 80% at 85VAC|
||120<br>370|VDC||
|Input Frequency|47<br>63|Hz||
|Input Current|6.3|A||
|Inrush Current|115 VAC - 25A<br>264 VAC -75A<br>230VAC - 45A|A||
|No Load Input  Power|1|W||
|Power Factor|exceeds 0.95 at Full Load|||



4E ~~M-22-011                                                                                      2                                                                              39-DE60-40553-002 / A1~~ 

~~**www.eospower.com**~~ 

**ITE Grade AC-DC Power Supplies** 

## **Silent 250 Watt** 

## **Output** 

**Characteristic                         Minimum        Typical       Maximum         Units          Notes & Conditions** se Output Power 250 ~~GO~~ 350 W Hold-up Time 8mS At 230 VAC es ~~QO eG~~ Line Regulation +/-0.5% Oe ~~GO~~ Load Regulation +/-0.5% Ge Output Voltage Adjustability ~~GO~~ +/-3% ~~se~~ Rise Time ~~GG~~ 55 ms ~~se~~ Set Point Tolerance +/-1% ~~se~~ Over Current Protection > 110% ~~GO~~ ee Over Voltage Protection ~~QQ~~ 110 to 140% NS 25% step load change, at 0.1A/uS slew rate, 50% duty cycle, 50Hz=4% , recovery time < 5 ms ~~)~~ Transient Response 

## **General** 

|**General**||
|---|---|
|**Characteristic**~~**Minimum       Typical       Maximum         Units          Notes & Conditions**~~|~~**Minimum       Typical       Maximum         Units          Notes & Conditions**~~|
|Efficiency<br>~~92%~~<br>~~94%~~|~~At 230 VAC~~|
|~~Mean Time BetweenFailure~~<br>~~800K Hours~~|~~Telcordia -SR332-issue 3~~|
|<br>~~Isolat~~i~~on: Input to Output~~<br>~~Input to Ground~~<br>~~4000~~<br>~~2500~~|ITAV<br>VDC|
|~~Leakage Current~~<br>~~300 uA Typical~~||



## ~~**Efciency Vs Load**~~ 

~~4EM-22-011                                                                                      3                                                                              39-DE60-40553-002 / A1~~ 

~~**www.eospower.com**~~ 

## **Silent 250 Watt** 

## **ITE Grade AC-DC Power Supplies** 

## **Environmental** 

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**----- Start of picture text -----**<br>
||||||
|---|---|---|---|---|
|Characteristic                          Minimum      Typical       Maximum          Units          Notes & Conditions|
|Operating Temperature|-40|70|°C|-40 to 0 startup is guaranteed with spec deviation.|
|70°C (Derated)|
|Storage Temperature|-40|85|°C|
|Relative Humidity|5|95|%|
|Operating Altitude|16,000|ft|RH, non-condensing|
|Short Circuit Protection|Hiccup mode|
|Switching Frequency|PFC – 70 to 130 KHz ,PWM – 50-80 KHz|
|Cooling|350W with 375 LFM forced air cooling at 100 to 264VAC|
|250W with natural convection cooling at 100 to 264VAC|

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## ~~**Signals & Controls**~~ 

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|||
|---|---|
|Characteristic                                                                    Notes & Conditions|
|***Power Good|Is a TTL signal which goes high afer main output reaches 90% of its set value.|
|The delay is 0.1 s to 0.5 s|
|***Power Fail|The same signal goes low at least 1ms before main output falls to 90% of set value|
|at AC Power of|
|***Remote on/of|Shortng Pin 3 to Pin 4 enables main output while keeping the Pins open disables|
|main output.|

**----- End of picture text -----**<br>


## **Signals & Controls** ~~**Drawing**~~ 

## ~~*****Power Good / Power Fail Signal**~~ 

**www.eospower.com** 

~~4EM-22-011                                                                                      4                                                                              39-DE60-40553-002 / A1~~ 

## **Silent 250 Watt** 

## **ITE Grade AC-DC Power Supplies** 

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**----- Start of picture text -----**<br>
Signals & Controls Drawing<br>**----- End of picture text -----**<br>


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**----- Start of picture text -----**<br>
*** Remote ON OFF<br>**----- End of picture text -----**<br>


## **Signals & Controls Drawing** 

## **Voltage Sense** 

4EM-22-011                                                                                      5                                                                              39-DE60-40553-002 / A1 

**www.eospower.com** 

## **ITE Grade** 

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|||||
|---|---|---|---|
|Silent 250 Watt|
|AC-DC Power Supplies|
|Mechanical Specifications|
|AC Input Connector (J1)|Molex: 26-60-4030|
|Mating: 09-50-3031; Pins: 08-50-0106|
|DC Output Connector (J2) Option 1|Molex: 39357 Series or equivalent|
|(Screw Terminal)|
|DC Output Connector (J2) Option 2|JST p/n: B6P-VH(LF)(SN)|
|(JST Connector)|Mating: JST p/n: VHR-6M; Pins: SVH-41T-P1.1|
|Signal Connector (J9)|Molex Part No: 10-89-7041 or equivalent|
|Mating part no: 1053082204 ; Pins: 1053001100|
|J(310)|HEADER  5POS 2.54MM) P/N : P9102-40-12-1|
|(Multifunction Connector)***|Mating part no : CONN RCPT HSNG 5POS CST-100 II P/N :1375820-5|
|Pins : CONN SOCKET 22-26AWG CRIMP TIN P/N : 1375819-1|
|Dimensions|4.5 x 2.5 x 1.58 inches|
|(114.30 x 63.5 x 40 mm)|
|Weight|400 gm approx|
|===|
|EMC: Emissions|
|Phenomenon                                         Standard                           Test Level               Notes & Conditions|
|Conducted|EN 55032|Level B|CISPR22-B, FCC PART15-B|
|Radiated|EN 55032|Level A|Level B with external core|
|(King core K5B RC 25x12x15-M or Equivalent in|
|input cable)|

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## ~~**EMC: Immunity**~~ 

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||||||||
|---|---|---|---|---|---|---|
|Phenomenon                                Standard                   Test Level                  Criteria            Notes & Conditions|
|Input Curr|Medical D|e|nt Harmonics|vice EMC|EN 61000-3-2|Class A|
|VL|o|w Voltage PSU EMCltage Fluctuaton and Flicker|EN 61000-3-3|compliance|
|ESD ImmunityESD Immunity|EN 61000-4-2|Level 3|A|
|Radiated Field ImmunityRadiated Immunity|EN 61000-4-3|Level 3|A|
|Electrical Fast Transient ImmunityEFT/Burst|EN61000-4-4|Level 3|A|
|Surge ImmunitySurge|EN 61000-4-5|Level 3|A|
|Conducted ImmunityConducted Immunity|EN 61000-4-6|Level 3|A|
|Magnetc Field Immunity|EN 61000-4-8|Level 3|A|
|Voltage dips, interruptons|EN 61000-4-11|A & B|

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## **Safety Approvals** 

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||||
|---|---|---|
|Safety Agency|Safety Standard|Notes & Conditions|
|CB|IEC62368-1:2018|
|Nemko|EN62368-1:2020;A11|
|ITAV|
|UL|UL62368-1 ED 3.0|
|CSA|CAN/CSA C22.2 No. 62368-1:19|
|CE Mark|Complies with LVD Directve|

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~~4EM-22-011                                                                                      6                                                                              39-DE60-40553-002 / A1~~ 

~~**www.eospower.com**~~ 

## **Silent 250 Watt** 

## **ITE Grade AC-DC Power Supplies** 

## **Derating Curve** 

De-rate linearly from 100% at 100VAC to 80% at 85VAC. 

## **Derating Curve** 

Convection load: 250W up to 40 °C. De-rate Between 40°C -50°C @ 1.2 % per °C above 50 °C @ 1.67 % per °C Forced air cooled load: 350W up to 40 °C. De-rate Between 40°C -50°C @ 1.2 % per °C above 50 °C @ 1.67 % per °C 

## **www.eospower.com** 

4EM-22-011                                                                                      7                                                                              39-DE60-40553-002 / A1 

**ITE Grade AC-DC Power Supplies** 

**Silent 250 Watt** 

## **Derating Curve** 

Convection load: 200W up to 40 °C. De-rate Between 40°C -50°C @ 1.2 % per °C above 50 °C @ 1.67 % per °C Forced air cooled load: 300W up to 40 °C. De-rate Between 40°C -50°C @ 1.2 % per °C above 50 °C @ 1.67 % per °C 

## **Derating Curve** 

Convection load: 175W up to 40 °C. De-rate Between 40°C -50°C @ 1.2 % per °C above 50 °C @ 1.67 % per °C 

4EM-22-011                                                                                      8                                                                              39-DE60-40553-002 / A1 

**www.eospower.com** 

## **ITE Grade Silent 250 Watt AC-DC Power Supplies** Ge 

## **Derating Curve** 

**==> picture [320 x 9] intentionally omitted <==**

**----- Start of picture text -----**<br>
De-rate linearly from 100% at 100VAC to 80% at 85VAC & above 264VAC De-rate to 80%<br>**----- End of picture text -----**<br>


4EM-22-011                                                                                      9                                                                              39-DE60-40553-002 / A1 

**www.eospower.com** 

**ITE Grade AC-DC Power Supplies** 

## **Silent 250 Watt** 

## **Mechanical Drawing** 

## **Screw terminal (1XXX/ 2XXX)** 

4EM-22-011                                                                                      10                                                                              39-DE60-40553-002 / A1 

**www.eospower.com** 

**ITE Grade AC-DC Power Supplies** 

## **Silent 250 Watt** 

## **Mechanical Drawing** 

## **Header terminal (1XXX/ 2XXX)** 

4EM-22-011                                                                                      11                                                                              39-DE60-40553-002 / A1 

**www.eospower.com** 

**ITE Grade AC-DC Power Supplies** 

## **Silent 250 Watt** 

## **Mechanical Drawing** 

## **Screw terminal (1XXX-B/ 2XXX-B)** 

4EM-22-011                                                                                      12                                                                              39-DE60-40553-002 / A1 

**www.eospower.com** 

**ITE Grade AC-DC Power Supplies** 

## **Silent 250 Watt** 

## **Mechanical Drawing** 

## **Header terminal (1XXX-B/ 2XXX-B)** 

4EM-22-011                                                                                      13                                                                              39-DE60-40553-002 / A1 

**www.eospower.com** 

## **ITE Grade Silent 250 Watt AC-DC Power Supplies** Ge EO: 

## **Mechanical Drawing** 

## **FLS250 2.5 X 4.5 with L-Bracket** 

4EM-22-011                                                                                      14                                                                              39-DE60-40553-002 / A1 

**www.eospower.com** 

**ITE Grade AC-DC Power Supplies** 

## **Silent 250 Watt** 

## **Mechanical Drawing** 

## **FLS250 3 X 5 with L -Bracket** 

**www.eospower.com** 

4EM-22-011                                                                                      15                                                                              39-DE60-40553-002 / A1 

**ITE Grade AC-DC Power Supplies** 

## **Silent 250 Watt** 

## **Mechanical Drawing** 

## **FLS250 2.5 X 4.5 with U Channel** 

4EM-22-011                                                                                      16                                                                              39-DE60-40553-002 / A1 

**www.eospower.com** 

**ITE Grade AC-DC Power Supplies** 

## **Silent 250 Watt** 

## **Mechanical Drawing** 

## **FLS250 3 X 5 with U Channel** 

4EM-22-011                                                                                      17                                                                              39-DE60-40553-002 / A1 

**www.eospower.com** 

**ITE Grade AC-DC Power Supplies** 

## **Silent 250 Watt** 

## **Mechanical Drawing** 

## **FLS250 2.5 X 4.5 with Cover kit** 

**www.eospower.com** 

4EM-22-011                                                                                      18                                                                              39-DE60-40553-002 / A1 

**ITE Grade AC-DC Power Supplies** 

## **Silent 250 Watt** 

## **Mechanical Drawing** 

## **FLS250 3 X 5 with Cover Kit** 

4EM-22-011                                                                                      19                                                                              39-DE60-40553-002 / A1 

**www.eospower.com** 

## **Silent 250 Watt** 

## **ITE Grade AC-DC Power Supplies** 

## **Mechanical Drawing** 

## **FLS250 2.5 X 4.5 with Cover kit - Fan** 

4EM-22-011                                                                                      20                                                                              39-DE60-40553-002 / A1 

**www.eospower.com** 

**ITE Grade AC-DC Power Supplies** 

## **Silent 250 Watt** 

## **Mechanical Drawing** 

## **FLS250 3 X 5 with Cover kit - Fan** 

4EM-22-011                                                                                      21                                                                              39-DE60-40553-002 / A1 

**www.eospower.com** 

**ITE Grade AC-DC Power Supplies** 

## **Silent 250 Watt** 

**==> picture [126 x 13] intentionally omitted <==**

**----- Start of picture text -----**<br>
Mechanical Drawing<br>**----- End of picture text -----**<br>


**==> picture [201 x 13] intentionally omitted <==**

**----- Start of picture text -----**<br>
 COVER KIT WITH SIDE FAN<br>**----- End of picture text -----**<br>


**www.eospower.com** 

22
Updated at April 22, 2026
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