Siemens SENTRON 3VA1325-7MH32-0AH0, 3-pole molded case circuit breaker, 250 A rated, TM120M thermal-magnetic release, 440 kA breaking capacity at 240 V.
| Parameter | Value |
|---|---|
| Product designation | Molded case circuit breaker |
| Brand / range | SENTRON |
| Basic switch (supplied) ref. | 3VA13257MH320AA0 |
| Integrated auxiliary / alarm switch ref. | 3VA9988-0AB12 |
| Parameter | Value |
|---|---|
| Number of poles | 3 |
| Rated operational voltage Ue (AC) | 690 V |
| Rated insulation voltage Ui | 800 V |
| Current at 40 °C | 250 A |
| Current at 45 °C | 250 A |
| Current at 50 °C | 250 A |
| Current at 55 °C | 245 A |
| Current at 60 °C | 239 A |
| Current at 65 °C | 234 A |
| Current at 70 °C | 228 A |
| Switching capacity class | C |
| Breaking capacity at 240 V | 440 kA |
| Breaking capacity at 415 V | 242 kA |
| Breaking capacity at 440 V | 242 kA |
| Breaking capacity at 500 V | 154 kA |
| Breaking capacity at 690 V | 17 kA |
| Power loss, max. | 30 W |
| Parameter | Value |
|---|---|
| Overcurrent release (trip unit) type | TM120M |
| Overcurrent protection function | I |
| Ground-fault monitoring | Without |
| Grounding protection function | No |
| Parameter | Value |
|---|---|
| Main circuit connection type | nut keeper kit on both ends |
| Main circuit connector arrangement | Front terminal |
| Protection class (IP), front | IP40 |
| Parameter | Value |
|---|---|
| Undervoltage release | No |
| Voltage trigger | No |
| Trip indicator | Yes |
| Communication function | No |
| Measurement function | No |
| Motor drive option | Yes |
| Auxiliary CO contacts | 3 |
| Parameter | Value |
|---|---|
| Operating temperature, max. | 70 °C |
| Operating temperature, min. | -25 °C |
| Storage temperature, max. | 80 °C |
| Storage temperature, min. | -40 °C |
| Parameter | Value |
|---|---|
| Mechanical service life (operating cycles), typ. | 20 000 |
| Height | 248 mm |
| Width | 138 mm |
| Depth | 110 mm |
| Height (in) | 9.76 in |
| Width (in) | 5.43 in |
| Depth (in) | 4.33 in |
At 240 V it interrupts 440 kA; at 415 V and 440 V that drops to 242 kA, at 500 V to 154 kA, and at 690 V to 17 kA — so the voltage on your bus decides the fault-clearing headroom you actually have. The thermal derating curve starts at 55 °C: 245 A at 55 °C, 239 A at 60 °C, 234 A at 65 °C, 228 A at 70 °C.
Dimensions are 110 mm deep, 138 mm wide, 248 mm tall — standard SENTRON 3VA footprint for a 250 A frame. Insulation voltage rated at 800 V.
At 240 V it interrupts 440 kA; at 415 V and 440 V it interrupts 242 kA; at 500 V it interrupts 154 kA; at 690 V it interrupts 17 kA.
This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.
It uses a TM120M thermal-magnetic release.
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