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Illustrative purposes only
RAM1A23D25
Solid State Relay, SPST-NO, 25 A, 265 VAC, Panel Mount, Screw, Zero Crossing
⚠️ Reference pricing provided. In case of supply shortages, we will connect you with our trusted procurement partners to ensure your project's continuity.
- Manufacturer: CARLO GAVAZZI
- Product type:
- SVHC: No SVHC (21-Jan-2025)
- Load Current: 25A
- Product Range: RAM1A Series
- Relay Mounting: Panel Mount
- Switching Mode: Zero Crossing
- Relay Terminals: Screw
- Control Voltage Max: 32VDC
- Control Voltage Min: 3VDC
- Contact Configuration: SPST-NO
- Operating Voltage Max: 265VAC
- Operating Voltage Min: 24VAC
| Delivery and price | |
|---|---|
| Units per pack | 10 |
| Price | 43.24 € |
| Current stock | 10+ |
| Lead time | 30 days |
Datasheet
**RAM1A, RAM1B**
## **RAM1A, RAM1B**
## **1-pole, solid state relay with LED, VDE certified**
## **Main features**
- AC switching Solid State Relay
- Direct copper bonding (DCB) technology
- Back to Back thyristor output
- VDE certified
- 100,000 cycles UL endurance test*
- LED for control presence indication
- Clip-on IP20 protection cover
- Self-lifting terminals
- 65 kA UL short circuit current rating
- *selected models
## **Description**
The industrial, 1-pole relay with antiparallel thyristor output is the most widely used indus trial SSR due to its multiple application possibilities. The relay can be used for resistive and slightly inductive loads. The zero switching relay switches ON when the sinusoidal curve crosses zero and switches OFF when the current crosses zero. The instanton relay with DC control input can be used for phase angle control. The built-in snubber secures transient protection. The LED indicates the status of the control input. The clipon cover secures touch protection (IP 20).
Specifications are at a surrounding temperature of 25°C unless otherwise specified.
## **Applications**
Plastic injection machines, Extrusion machines, Blow moulding machines, Thermoformers, Dryers, Electrical ovens, Fryers, Shrink tunnels, Air handling units, Sterilisation equipment, Climatic chambers, Ovens and furnaces, Ambient heating.
## **Main functions**
- 1-pole, AC zero cross or instant-on switching
- Rated output voltage up to 660 VAC, options for 690 VAC
- Rated output current up to 125 AAC
- 3(4)-32 VDC or 20-280 VAC/22-48 VDC control voltage range
**1**
07/01/2026 RAM1A DS ENG
Carlo Gavazzi Ltd.
**RAM1A, RAM1B**
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## **Order code**
## **RAM1**
Enter the code option instead of . Refer to the Selection guide section for valid part numbers.
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Code Option Description Comments<br>R -<br>A - Solid state relay (RAM)<br>M -<br>1 - 1-pole switching<br>A Zero cross switching (ZC)<br>B Instant-on switching (IO)<br>23 Rated voltage: 24-265 VAC, 650 Vp 42-265 VAC for RAM1B<br>60 Rated voltage: 42-660 VAC, 1200 Vp<br>69 Rated voltage: 42-760 VAC, 1600 Vp<br>4-32 VDC for 600/690 VAC versions and all<br>D Control voltage: 3-32 VDC RAM1B models<br>A Control voltage: 20-280 VAC/22-48 VDC<br>25 Rated current: 25 AAC (525 A²s)<br>50 Rated current: 50 AAC (1800 A²s)<br>75 Rated current: 75 AAC (3200 A²s)<br>100 Rated current: 100 AAC (6600 A²s)<br>125 Rated current: 125 AAC (18000 A²s)<br>Optional. Not applicable for 690 VAC version.<br>Z Overvoltage protection with transils (self-switching) Add suffix 'Z' to a valid reference. Availability is<br>subject to confirmation.<br>**----- End of picture text -----**<br>
## **Selection guide - Zero cross switching**
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Maximum rated operational current<br>Rated<br>voltage, Control<br>Blocking voltage 25 AAC 50 AAC 75 AAC 100 AAC 125 AAC<br>voltage (525 A [2] s) (1800 A [2] s) (3200 A [2] s) (6600 A [2] s) (18000 A [2] s)<br>3-32 VDC RAM1A23D25 RAM1A23D50 RAM1A23D75 RAM1A23D100 RAM1A23D125<br>230 VAC,<br>650 Vp 20-280 VAC<br>RAM1A23A25 RAM1A23A50 RAM1A23A75 RAM1A23A100 RAM1A23A125<br>22-48 VDC<br>4-32 VDC RAM1A60D25 RAM1A60D50 RAM1A60D75 RAM1A60D100 RAM1A60D125<br>600 VAC,<br>1200 Vp 20-280 VAC<br>RAM1A60A25 RAM1A60A50 RAM1A60A75 RAM1A60A100 RAM1A60A125<br>22-48 VDC<br>4-32 VDC - - RAM1A69D75 RAM1A69D100 RAM1A69D125<br>690 VAC,<br>1600 Vp 20-280 VAC - - RAM1A69A75 RAM1A69A100 RAM1A69A125<br>22-48 VDC<br>**----- End of picture text -----**<br>
**2**
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Carlo Gavazzi Ltd.
**RAM1A, RAM1B**
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## **Selection guide - Instant-on switching**
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Maximum rated operational current<br>Rated<br>voltage, Control<br>Blocking voltage 25 AAC 50 AAC 75 AAC 100 AAC 125 AAC<br>voltage (525 A [2] s) (1800 A [2] s) (3200 A [2] s) (6600 A [2] s) (18000 A [2] s)<br>230 VAC,<br>4-32 VDC RAM1B23D25 RAM1B23D50 RAM1B23D75 RAM1B23D100 RAM1B23D125<br>650 Vp<br>4-32 VDC RAM1B60D25 RAM1B60D50 RAM1A60D75 RAM1A60D100 RAM1A60D125<br>600 VAC,<br>1200 Vp 20-280 VAC - - - - RAM1A60A125<br>22-48 VDC<br>Carlo Gavazzi compatible components<br>Description Component code Notes<br>FASTON terminals RM48F*, RM63F* - Faston tabs, F0 = flat 0°, F4 = angled 45°<br>- Tab dimensions according to DIN 46342 part 1<br>- Pure tin-plated brass<br>- Pack size: 20 pieces<br>Fork terminals RM635FK/P - Terminal adaptors for 35mm² cable<br>- Type RM635FK (P version with touch protection)<br>- Pack size: 10 pieces<br>Thermal pads KK071CUT - Graphite thermal pad with adhesive on one side<br>- Dimensions: 35 x 43 x 0.25 mm<br>- Pack size: 50 pieces<br>Touch safety cover RMIP20 - IP20 protection degree<br>- Pack size: 20 pieces<br>Heatsinks RHS Heatsink and accessories<br>Mounting screws kit SRWKITM5X10MM - M5 x 10 mm with captivated washer<br>- Pack size: 20 pieces<br>**----- End of picture text -----**<br>
## **Carlo Gavazzi further reading**
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Information Where to find it Notes<br>Datasheet https://gavazziautomation.com/images/PIM/DATASHEET/ Solid state relay Accessories (including<br>ENG/SSR_Accessories.pdf Heatsinks)<br>https://www.gavazziautomation.com/en-global/products/ Online Heatsink selector tool<br>solid-state-relays/heatsink-selector-tool<br>**----- End of picture text -----**<br>
**3**
07/01/2026 RAM1A DS ENG
Carlo Gavazzi Ltd.
**RAM1A, RAM1B**
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## **Structure**
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1/L1<br>2/T1<br>LED<br>A2-<br>A1+<br>**----- End of picture text -----**<br>
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Element Component Function<br>1/L1 Power connection Mains connection<br>2/T1 Power connection Load connection<br>A1+, A2- Control connection Terminals for control voltage<br>LED ON indicator Indicates presence of control voltage<br>**----- End of picture text -----**<br>
**4**
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Carlo Gavazzi Ltd.
**RAM1A, RAM1B**
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## **Features**
## **General data**
|**Material**|Noryl, black|Noryl, black|
|---|---|---|
|**Mounting**|Panel mount||
|**Touch Protection**|IP20||
|**Baseplate**|25 A, 50 A<br>75 A,100 A,125 A|Aluminium<br>Copper,nickel-plated|
|**Overvoltage Category**|III, 6 kV (1.2/50 μs) rated impulse withstand voltage||
|**Isolation**|Input and Output to case<br>Input to Output|4000 Vrms<br>4000 Vrms|
|**Weight**|25 A, 50 A<br>75 A,100 A,125 A|approx. 60g<br>approx. 100g|
## **Performance**
## **Output specifications**
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RAM1..25 RAM1..50 RAM1..75 RAM1..100 RAM1..125<br>Max. operational current [1] : 25 AAC 50 AAC 75 AAC 100 AAC 125 AAC<br>AC-51<br>Max. operational current [1] : 5 AAC 15 AAC 17 AAC 20 AAC 30 AAC<br>AC-53a<br>Operational frequency range 45 to 65 Hz<br>Leakage current @ rated voltage <3 mAAC<br>Minimum operational current 150 mAAC 250 mAAC 400 mAAC 400 mAAC 500 mAAC<br>Repetitive overload current < 55 AAC < 125 AAC < 130 AAC < 150 AAC < 200AAC<br>t=1 s<br>Non-repetitive surge current<br>(ITSM), t=10 ms 325 Ap 600 Ap 800 Ap 1150 Ap 1900 Ap<br>I²t for fusing (t=10 ms), minimum 525 A²s 1800 A²s 3200 A²s 6600 A²s 18000 A²s<br>Power factor >0.5 at rated voltage<br>Critical dV/dt (@Tj init = 40°C) 1000 V/μs<br>General use endurance testing<br>acc. to UL 508² 100,000 cycles 100,000 cycles 6,000 cycles 100,000 cycles 6,000 cycles<br>**----- End of picture text -----**<br>
- 1: with appropriate heatsink. Refer to Heatsink selection section for further details.
2: UL requirement for General Use Endurance Testing is 6,000 cycles.
## **Output voltage specifications**
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RAM1.23.. RAM1.60.. RAM1.69..<br>Operational voltage range<br>RAM1A... 24 to 265 VACrms 42 to 660 VACrms 42 to 760 VACrms<br>RAM1B... 42 to 265 VACrms 42 to 660 VACrms -<br>Blocking voltage 650 Vp 1200 Vp 1600 Vp<br>**----- End of picture text -----**<br>
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Carlo Gavazzi Ltd.
**RAM1A, RAM1B**
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## **Motor ratings*: HP (UL508)**
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230 VAC 400 VAC 480 VAC 600 VAC<br>RAM1..25 1.5 HP 3 HP 3 HP 5 HP<br>RAM1..50 3 HP 5 HP 7.5 HP 10 HP<br>RAM1..75 5 HP 7.5 HP 10 HP 15 HP<br>RAM1..100 7.5 HP 15 HP 20 HP 25 HP<br>RAM1..125 10 HP 15 HP 25 HP 30 HP<br>**----- End of picture text -----**<br>
* with suitable heatsink
## **Inputs**
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RAM1...D.. RAM1...A..<br>Control voltage RAM1A23... 3 - 32 VDC<br>range RAM1A60..., RAM1A69... 4 - 32 VDC 20-280 VAC, 22-48 VDC<br> RAM1B 4 - 32 VDC<br>Pick-up voltage RAM1A23... 2.5 VDC<br> RAM1A60..., RAM1A69... 3.5 VDC 18 VAC/DC<br> RAM1B 3.5 VDC<br>Drop-out voltage 1.2 VDC 6 VAC/DC<br>Maximun reverse voltage 32 VDC -<br>Response time pick-up RAM1A ≤ 1/2 cycle ≤ 12 ms<br> RAM1B ≤ 0.1 ms ≤ 12 ms<br>Response time drop-out RAM1A ≤ 1/2 cycle ≤ 40 ms<br> RAM1B ≤ 1/2 cycle ≤ 40 ms<br>Input current @ max RAM1A ≤ 12 mA ≤ 20 mA<br>input voltage RAM1B ≤ 15 mA ≤ 20 mA<br>**----- End of picture text -----**<br>
## **Output power dissipation**
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140<br>RAM..125<br>120<br>RAM..100<br>100<br>RAM..75<br>80<br>60 RAM..50<br>40<br>RAM..25<br>20<br>0<br>0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 125<br>Load current per pole in AACrms<br>Power dissipa�on in W<br>**----- End of picture text -----**<br>
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Carlo Gavazzi Ltd.
**RAM1A, RAM1B**
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## **Heatsink selection**
Thermal resistance [°C/W] of RAM..25
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Load Surrounding ambient temperature [°C]<br>current<br>20 30 40 50 60 70 80<br>[A]<br>25.0 3.23 2.80 2.37 1.94 1.51 1.09 0.66<br>22.5 3.70 3.21 2.73 2.24 1.75 1.26 0.78<br>20.0 4.30 3.74 3.17 2.61 2.05 1.49 0.92<br>17.5 5.07 4.41 3.76 3.10 2.44 1.78 1.12<br>15.0 6.12 5.33 4.54 3.75 2.96 2.17 1.38<br>12.5 7.58 6.61 5.64 4.66 3.69 2.72 1.75<br>10.0 9.80 8.55 7.30 6.05 4.80 3.55 2.30<br>7.5 13.5 11.8 10.09 8.37 6.66 4.94 3.23<br>5.0 nh 18.3 15.7 13.04 10.39 7.74 5.09<br>2.5 nh nh nh nh nh 16.2 10.7<br>**----- End of picture text -----**<br>
Thermal resistance [°C/W] of RAM..50
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Load Surrounding ambient temperature [°C]<br>current<br>20 30 40 50 60 70 80<br>[A]<br>50.0 1.25 1.07 0.88 0.70 0.52 0.34 0.16<br>45.0 1.46 1.25 1.04 0.84 0.63 0.42 0.21<br>40.0 1.73 1.49 1.25 1.01 0.77 0.52 0.28<br>35.0 2.08 1.80 1.51 1.23 0.94 0.66 0.37<br>30.0 2.56 2.22 1.87 1.53 1.18 0.84 0.49<br>25.0 3.24 2.81 2.38 1.95 1.52 1.09 0.66<br>20.0 4.26 3.71 3.15 2.59 2.03 1.47 0.92<br>15.0 5.99 5.22 4.45 3.67 2.90 2.12 1.35<br>10.0 9.49 8.27 7.06 5.85 4.64 3.43 2.22<br>5.0 nh 17.5 15.0 12.4 9.91 7.39 4.86<br>**----- End of picture text -----**<br>
Thermal resistance [°C/W] of RAM..75
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Load Surrounding ambient temperature [°C]<br>current<br>20 30 40 50 60 70 80<br>[A]<br>75.0 0.94 0.82 0.70 0.58 0.47 0.35 0.23<br>67.5 1.10 0.96 0.82 0.69 0.55 0.41 0.27<br>60.0 1.30 1.14 0.98 0.81 0.65 0.49 0.33<br>52.5 1.57 1.38 1.18 0.98 0.79 0.59 0.39<br>45.0 1.95 1.70 1.46 1.22 0.97 0.73 0.49<br>37.5 2.48 2.17 1.86 1.55 1.24 0.93 0.62<br>30.0 3.32 2.90 2.49 2.07 1.66 1.24 0.83<br>22.5 4.75 4.15 3.56 2.97 2.37 1.78 1.19<br>15.0 7.68 6.72 5.76 4.80 3.84 2.88 1.92<br>7.5 nh 14.59 12.5 10.42 8.34 6.25 4.17<br>**----- End of picture text -----**<br>
Thermal resistance [°C/W] of RAM..100
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Load Surrounding ambient temperature [°C]<br>current<br>20 30 40 50 60 70 80<br>[A]<br>100.0 0.60 0.52 0.43 0.34 0.26 0.17 0.09<br>90.0 0.74 0.64 0.54 0.44 0.34 0.24 0.14<br>80.0 0.91 0.79 0.68 0.56 0.45 0.33 0.22<br>70.0 1.09 0.96 0.82 0.68 0.55 0.41 0.27<br>60.0 1.33 1.16 1.00 0.83 0.66 0.50 0.33<br>50.0 1.66 1.45 1.24 1.04 0.83 0.62 0.41<br>40.0 2.16 1.89 1.62 1.35 1.08 0.81 0.54<br>30.0 3.01 2.64 2.26 1.88 1.51 1.13 0.75<br>20.0 4.73 4.14 3.55 2.96 2.37 1.78 1.18<br>10.0 9.94 8.70 7.45 6.21 4.97 3.73 2.48<br>**----- End of picture text -----**<br>
nh' means no heatsink necessary. The SSR should still be tightened to a surface to ensure optimal thermal dissipation.
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Carlo Gavazzi Ltd.
**RAM1A, RAM1B**
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## **Heatsink selection (continued)**
Thermal resistance [°C/W] of RAM..125
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Load Surrounding ambient temperature [°C]<br>current<br>20 30 40 50 60 70 80<br>[A]<br>125.0 0.63 0.55 0.47 0.40 0.32 0.24 0.16<br>112.5 0.73 0.64 0.54 0.45 0.36 0.27 0.18<br>100.0 0.84 0.74 0.63 0.53 0.42 0.32 0.21<br>87.5 0.99 0.87 0.74 0.62 0.50 0.37 0.25<br>75.0 1.20 1.05 0.90 0.75 0.60 0.45 0.30<br>62.5 1.48 1.30 1.11 0.93 0.74 0.56 0.37<br>50.0 1.92 1.68 1.44 1.20 0.96 0.72 0.48<br>37.5 2.65 2.32 1.98 1.65 1.32 0.99 0.66<br>25.0 4.12 3.60 3.09 2.57 2.06 1.54 1.03<br>12.5 8.55 7.48 6.41 5.34 4.27 3.21 2.14<br>**----- End of picture text -----**<br>
## **Thermal data**
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RAM..25 RAM..50 RAM..75 RAM..100 RAM..125<br>Max. junction temperature 125°C 125°C 125°C 125°C 125°C<br>Max. heatsink temperature 100°C 100°C 100°C 100°C 100°C<br>Junction to case thermal<br><0.80°C/W <0.50°C/W <0.35°C/W <0.35°C/W <0.30°C/W<br>resistance, Rthjc<br>Case to heatsink thermal<br>resistance, Rthcs3 < 0.20°C/W < 0.20°C/W <0.10°C/W <0.10°C/W <0.10°C/W<br>**----- End of picture text -----**<br>
3. Thermal resistance case to heatsink values are applicable upon application of a fine layer of silicon based thermal paste HTS02S from Electrolube between SSR and heatsink
**8**
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Carlo Gavazzi Ltd.
**RAM1A, RAM1B**
|**Compatibility and conformance**<br>**Approvals**<br>>~~CE~~<br>AL G &|**Compatibility and conformance**<br>**Approvals**<br>>~~CE~~<br>AL G &|FAL|FAL|FAL|
|---|---|---|---|---|
||**Standards compliance**<br>LVD:<br>EMCD:<br>cURus:<br>CSA:<br>VDE:<br>EN 60947-4-3<br>EN 60947-4-3<br>UL508 Recognized (E80573), NRNT2, NRNT8<br>C22.2 No.14, (204075)<br>VDE0660-109<br>~~jf~~||||
||**UL short circuit current rating**<br>65k Arms (refer to short circuit current section, Type 1 – UL508)||||
|Note: RAM1A69.. doesn't have UR, CSA or VDE certifications.|||||
||**Electromagnetic compatibility (EMC) - Immunity**||||
||**Electrostatic discharge (ESD)**<br>EN/IEC 61000-4-2<br>8 kV air discharge, 4 kV contact(PC2)||||
||**Radiated radio frequency**<br>EN/IEC 61000-4-3<br>10 V/m, from 80 MHz to 1 GHz (PC1)<br>10 V/m, from 1.4 to 2 GHz (PC1)<br>3 V/m,from 2 to 2.7 GHz(PC1)||||
||**Electrical fast transient (burst)**<br>EN/IEC 61000-4-4<br>Output: 2 kV, 5 kHz (PC2)<br>Input: 1 kV,5 kHz(PC2)||||
||**Conducted radio frequency**<br>EN/IEC 61000-4-6<br>10 V/m,from 0.15 to 80 MHz(PC1)||||
||**Electrical surge**<br>EN/IEC 61000-4-5<br>Output, line to line: 1 kV (PC2)<br>Output, line to earth: 1 kV (PC2)<br>Output, line to earth: 2 kV (PC2 with external varistor)<br>Input, line to line: 1 kV (PC2)<br>Input, line to earth: 2 kV (PC2)||||
||**Voltage dips**<br>EN/IEC 61000-4-11<br>0% for 0.5, 1 cycle (PC2)<br>40% for 10 cycles (PC2)<br>70% for 25 cycles (PC2)<br>80% for 250 cycles(PC2)||||
||**Voltage interruptions**<br>EN/IEC 61000-4-11<br>0% for 5000 ms(PC2)||||
||||||
||**Electromagnetic compatibility (EMC) - Emissions**||||
||**Radio interference field**<br>**emission (radiated)**<br>EN/IEC 55011<br>Class B: from 30 to 1000 MHz||||
||**Radio interference voltage**<br>**emissions (conducted)**<br>EN/IEC 55011<br>Class A: from 0.15 to 30 MHz<br>(External filter may be required)||||
Note:
- Use of AC solid state relays may, according to the application and the load current, cause conducted radio interferences. Use of mains filters may be necessary for cases where the user must meet E.M.C requirements. The capacitor values given inside the filtering specification tables should be taken only as indications, the filter attenuation will depend on the final application.
- Control input lines must be installed together to maintain products’ susceptibility to Radio Frequency interference.
- The control terminals A1, A2 (RAM1...A..) shall be supplied by a secondary circuit where power is limited by a transformer, rectifier, voltage divider, or similar device that derives power from a primary circuit, and where the short-circuit limit between conductors of the secondary circuit or between conductors and ground is 1500 VA or less. The short-circuit volt ampere limit is the product of the open circuit voltage and the short circuit ampere.
- Performance Criteria 1 (PC1): No degradation of performance or loss of function is allowed when the product is operated as intended.
- Performance Criteria 2 (PC2): During the test, degradation of performance or partial loss of function is allowed. However when the test is complete the product should return operating as intended by itself.
- Performance Criteria 3 (PC3): Temporary loss of function is allowed, provided the function can be restored by manual operation of the controls.
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**RAM1A, RAM1B**
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## **Environmental specifications**
|**Operating temperature**|-40°C to +80°C(-40°F to +176°F)|
|---|---|
|**Storage temperature**|-40°C to +100°C(-40°F to +212°F)|
|**Relative humidity**|95% non-condensing @40°C|
|**Pollution degree**|2|
|**Installation altitude**|0-1000 m. Above 1000 m derate linearly by 1% of FLC per 100 m up to a maximum<br>of 2000 m|
|**Vibration resistance**|5g/ axis(2-100Hz, IEC 60068-2-6, EN 50155, EN 61373)|
|**Impact resistance**|15/11g/ms(EN 50155, EN 61373)|
|**EU RoHS compliant**|Yes|
|**China RoHS**|25|
The declaration in this section is prepared in compliance with People’s Republic of China Electronic Industry Standard SJ/ T11364-2014: Marking for the Restricted Use of Hazardous Substances in Electronic and Electrical Products.
||**Toxic or Harardous Substances and Elements**|**Toxic or Harardous Substances and Elements**|**Toxic or Harardous Substances and Elements**|**Toxic or Harardous Substances and Elements**|**Toxic or Harardous Substances and Elements**|**Toxic or Harardous Substances and Elements**|
|---|---|---|---|---|---|---|
|**Part Name**|Lead<br>(Pb)|Mercury<br>(Hg)|Cadmium<br>(Cd)|Hexavalent<br>Chromium<br>(Cr(Vl))|Polybrominat-<br>ed biphenyls<br>(PBB)|Polybromi-<br>nated diphenyl<br>ethers (PBDE)|
|**Power Unit**<br>**Assembly**|x|O|O|O|O|O|
|O: Indicates that said hazardous substance contained in homogeneous materials fot this part are below the limit<br>requirement of GB/T 26572.<br>X: Indicates that said hazardous substance contained in one of the homogeneous materials used for this part is above<br>the limit requirement of GB/T 26572.|||||||
这份申明根据中华人民共和国电子工业标准 SJ/T11364-2014：标注在电子电气产品中限定使用的有害物质
|零件名称|有毒或有害物质与元素|有毒或有害物质与元素|有毒或有害物质与元素|有毒或有害物质与元素|有毒或有害物质与元素|有毒或有害物质与元素|
|---|---|---|---|---|---|---|
||铅<br>(Pb)|汞<br>(Hg)|镉<br>(Cd)|六价铬<br>(Cr(Vl))|多溴化联苯<br>(PBB)|多溴联苯醚<br>(PBDE)|
|功率单元|x|O|O|O|O|O|
|O:此零件所有材料中含有的该有害物低于GB/T 26572的限定。<br>X: 此零件某种材料中含有的该有害物高于GB/T 26572的限定。|||||||
**10**
07/01/2026 RAM1A DS ENG
Carlo Gavazzi Ltd.
**RAM1A, RAM1B**
**==> picture [37 x 37] intentionally omitted <==**
## **Short circuit protection**
## **Protection Co-ordination, Type 1 vs Type 2:**
Type 1 protection implies that after a short circuit, the device under test will no longer be in a functioning state. In Type 2 co-ordination the device under test will still be functional after the short circuit. In both cases, however the short circuit has to be interrupted. The fuse between enclosure and supply shall not open. The door or cover of the enclosure shall not be blown open. There shall be no damage to conductors or terminals and the conductors shall not separate from terminals. there shall be no breakage or cracking of insulating bases to the extent that the integrity of the mounting of live parts is impaired. Discharge of parts or any risk of fire shall not occur.
The product variants listed in the table hereunder are suitable for use on a circuit capable of delivering not more than 65,000 Arms Symmetrical Amperes, 600Volts maximum when protected by fuses. Tests at 65,000A were performed with Class J, fast acting: please refer to the table below for maximum allowed ampere rating of the fuse. Use fuses only.
|**Protection co-ordination Type 1 according to UL 508**|**Protection co-ordination Type 1 according to UL 508**|**Protection co-ordination Type 1 according to UL 508**|**Protection co-ordination Type 1 according to UL 508**|**Protection co-ordination Type 1 according to UL 508**|
|---|---|---|---|---|
|**Part No.**|**Prospective short**<br>**circuit current**<br>**[kArms]**|**Max. fuse size [A]**|**Class**|**Voltage [VAC]**|
|RAM1..25|65|30|J or CC|Max. 600|
|RAM1..50..||30<br>20|J<br>HSJ20(Mersen)*||
|RAM1..75..||100|J||
|RAM1..100||80<br>60|J<br>HSJ60(Mersen)*||
|RAM1..125||125<br>60|J<br>HSJ60(Mersen)*||
|**Protection co-ordination Type 2(IEC/EN**|**Protection co-ordination Type 2(IEC/EN**|**60947-4-3)**|**60947-4-3)**|**60947-4-3)**|
|---|---|---|---|---|
||**Prospective**|**Mersen***||**Size**|
|**Part No.**|**short circuit**<br>**current [kArms]**|**Max. fuse size**<br>**[A]**|**Part number**||
|RAM1.23..25|10|25|6.9gRB 10-25|10.3 x 38|
|RAM1.60..25||20|6.9gRB 10-20|10.3 x 38|
|RAM1.23..50||50|6.9zz CP gRC 14x51/50|14 x 51|
|RAM1.60..50||50|6.9zz CP gRC 22x58/50|22 x 58|
|RAM1..75||63|6.9zz CP gRC 22x58/63|22 x 58|
|RAM1.23.100||100|6.9zz CP gRC 22x58/100|22 x 58|
|RAM1.60.100||80|6.9zz CP gRC 22x58/80|22 x 58|
|RAM1.60.125||125|6.921 CP URGD 27x60/125|27 x 60|
zz = 00, without fuse trip indication, zz = 21, with fuse trip indication. * formerly Ferraz Shawmut
**11**
07/01/2026 RAM1A DS ENG
Carlo Gavazzi Ltd.
**RAM1A, RAM1B**
**==> picture [37 x 37] intentionally omitted <==**
**==> picture [484 x 43] intentionally omitted <==**
**----- Start of picture text -----**<br>
Protection co-ordination Type 2 with Minature Circuit Breakers (M.C.B.s)<br>Solid State Relay type ABB Model no. for ABB Model no. for Wire cross sectional area Minimum length of Cu<br>Z - type M. C. B. B - type M. C. B. [mm [2] ] wire conductor [m]⁴<br>(rated current) (rated current)<br>**----- End of picture text -----**<br>
|**Protection co-ordination Type 2 with Minature Circuit Breakers(M.C.B.s)**|**Protection co-ordination Type 2 with Minature Circuit Breakers(M.C.B.s)**|**Protection co-ordination Type 2 with Minature Circuit Breakers(M.C.B.s)**|**Protection co-ordination Type 2 with Minature Circuit Breakers(M.C.B.s)**|**Protection co-ordination Type 2 with Minature Circuit Breakers(M.C.B.s)**|
|---|---|---|---|---|
|**Solid State Relay type**|**ABB Model no. for**<br>**Z - type M. C. B.**<br>**(rated current)**|**ABB Model no. for**<br>**B - type M. C. B.**<br>**(rated current)**|**Wire cross sectional area**<br>**[mm2]**|**Minimum length of Cu**<br>**wire conductor [m]⁴**|
||||||
|RAM..25|S201 - Z4 (4A)|S201 - B2 (2A)|1.0<br>1.0<br>1.5|21.0<br>21.0<br>31.5|
||S201 - Z6 UC (6A)|S201 - B2 (2A)|||
|RAM..50|S201 - Z10 (10A)|S201-B4 (4A)|1.0<br>1.5<br>2.5|7.6<br>11.4<br>19.0|
||S201 - Z16 (16A)|S201-B6 (6A)|1.0<br>1.5<br>2.5<br>4.0|5.2<br>7.8<br>13.0<br>20.8|
||S201 - Z20 (20A)|S201-B10 (10A)|1.5<br>2.5|12.6<br>21.0|
||S201 - Z25 (25A)|S201-B13 (13A)|2.5<br>4.0|25.0<br>40.0|
||S202 - Z25 (25A)|S202-B13 (13A)|2.5<br>4.0|19.0<br>30.4|
|RAM..75<br>RAM..100|S201 - Z20 (20A)|S201-B10 (10A)|1.5<br>2.5<br>4.0|4.2<br>7.0<br>11.2|
||S201 - Z32 (32A)|S201-B16 (16A)|2.5<br>4.0<br>6.0|13.0<br>20.8<br>31.2|
||S202 - Z20 (20A)|S202-B10 (10A)|1.5<br>2.5<br>4.0|1.8<br>3.0<br>4.8|
||S202 - Z32 (32A)|S202-B16 (16A)|2.5<br>4.0<br>6.0<br>10.0|5.0<br>8.0<br>12.0<br>20.0|
||S202 - Z50 (50A)|S202-B25 (25A)|4.0<br>6.0<br>10.0|14.8<br>22.2<br>37.0|
|RAM..125|S201-Z50 (50A)|S201-B25 (25A)|4.0<br>6.0<br>10.0<br>16.0|4.8<br>7.2<br>12.0<br>19.2|
||S201-Z63 (63A)|S201-B32 (32A)|6.0<br>10.0<br>16.0|7.2<br>12.0<br>19.2|
4. Between MCB and Load (including return path which goes back to the mains).
Note: A prospective current of 6 kA and a 230 / 400 V power supply is assumed for the above suggested specifications. For cables with different cross section than those mentioned above please consult Carlo Gavazzi's Technical Support Group.
S201 models refer to 1-pole M.C.B., S202 models refer to 2-poles M.C.B.
**12**
07/01/2026 RAM1A DS ENG
Carlo Gavazzi Ltd.
**RAM1A, RAM1B**
**==> picture [37 x 37] intentionally omitted <==**
## **Dimensions**
**==> picture [234 x 197] intentionally omitted <==**
**----- Start of picture text -----**<br>
44.8<br>12.3<br>2 X M5<br>LED APPLY<br>HEATSINK<br>COMPOUND<br>2 X M3<br>5.2<br>28.8<br>58.2 47.5 68.<br>**----- End of picture text -----**<br>
Dimensions in mm. Tolerances ± 0.5 mm.
## **Connection diagram**
**==> picture [16 x 22] intentionally omitted <==**
**----- Start of picture text -----**<br>
L1<br>L2/N<br>**----- End of picture text -----**<br>
**==> picture [256 x 182] intentionally omitted <==**
**----- Start of picture text -----**<br>
*<br>LOAD<br>( )~- ( )~+<br>Control Input<br>**----- End of picture text -----**<br>
- depends on system requirements.
## **Functional diagram**
**==> picture [304 x 104] intentionally omitted <==**
**----- Start of picture text -----**<br>
A1(+~) REGULATION T1<br>* ZC<br>IO<br>A2(-~) L1<br>**----- End of picture text -----**<br>
* Varistor across input applies to AC control versions only.
**13**
07/01/2026 RAM1A DS ENG
Carlo Gavazzi Ltd.
**RAM1A, RAM1B**
## **Connection Specifications**
**1/L1, 2/T1 A1+, A2-** ~~eees es{~~ h ~~es |~~ **Mounting screws** M5, not provided with SSR ~~a~~ **(SSR to heatsink)** ~~ee~~ (refer to ~~Re~~ **SRWKITM5X10MM** in the Compatible components section) ~~| A~~ **Mounting torque** 1.5 - 2.0 Nm (13.3 - 17.7 lb-in) **(SSR to heatsink)** ~~ee~~ **Connection type** M5 screw with captivated washer M3 screw with captivated washer ~~es a Ge sO~~ **Stripping length** 12 mm 8 mm **Rigid (solid & stranded)** 1x 2.5 – 6.0 mm² 2x 2.5 – 6.0 mm² 1x 0.5 – 2.5 mm² 2x 0.5 - 2.5 mm² **UL/CSA rated data** 1x 14 – 10 AWG 2x 14 – 10 AWG 1x 18 – 12 AWG 2x 18 - 12 AWG 2x 1.0 – 2.5 mm² 1x 1.0 – 4.0 mm² 2x 2.5 – 4.0 mm² 1x 0.5 – 2.5 mm² 2x 0.5 - 2.5 mm² **Flexible with end sleeve** 1x 18 – 12 AWG 2x 18 – 14 AWG 1x 18 – 12 AWG 2x 18 - 12 AWG 2x 14 – 12 AWG ~~ee~~ 2x 1.0 – 2.5 mm² **Flexible without end** 2x 1.0 – 6.0 mm² 2x 2.5 – 6.0 mm² 1x 1.0 – 6.0 mm² **sleeve** 2x 18 – 10 AWG 2x 18 – 14 AWG 1x 18 –10 AWG 2x 14 – 10 AWG **Torque specifications** Pozidriv, PZ2 Pozidriv, PZ1 2.4 Nm (21.2 lb-in) 0.5 Nm (4.4 lb-in) ~~a eeee~~ **Aperture for termination** 12 mm 7.5 mm **lug (fork or ring)** ~~a ee~~
COPYRIGHT ©2026 Content subject to change. Download the PDF: https://gavazziautomation.com
**14**
07/01/2026 RAM1A DS ENG
Carlo Gavazzi Ltd.
Updated at June 10, 2026
Founded in Milan in 1931, Carlo Gavazzi is a globally recognized leader in the design and manufacture of high-quality automation components. For nearly a century, the company has driven technological innovation in the industrial and building automation markets. With ISO 9001-certified production facilities across Europe and Asia, Carlo Gavazzi delivers state-of-the-art solutions tailored for demanding applications, including HVAC, renewable energy, semiconductor manufacturing, and electric vehicle charging infrastructure. Our extensive portfolio of Carlo Gavazzi components focuses heavily on their industry-leading switching and sensing technologies. We carry a comprehensive selection of solid state relays, contactors, and power relays engineered for exceptional reliability and thermal performance. Alongside these robust switching solutions, our range features a wide array of precision sensors, with a strong emphasis on proximity switches and light sensors that are critical for automated manufacturing processes, mobile equipment, and access control systems. Beyond core sensing and switching, the Carlo Gavazzi lineup extends into essential power management, circuit protection, and control devices. This includes highly efficient AC/DC converters, thermal magnetic circuit breakers, and advanced panel instrumentation designed to monitor and optimize energy efficiency. From current sensing transformers to motor starters, engineers consistently trust Carlo Gavazzi to provide competitive, dependable, and forward-thinking components for their most complex automation challenges.
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