Siemens SENTRON 3VA1225-6EF42-0KC0, 4-pole molded case circuit breaker, 250 A rated continuous current, 220 kA breaking capacity at 240 V, line protection, TM240 overcurrent release, 2 auxiliary switches HQ.
| Parameter | Value |
|---|---|
| Product designation | Molded case circuit breaker |
| Brand / range | SENTRON |
| Product version | Line protection |
| Integrated auxiliary / alarm switch ref. | 3VA9988-0AA12 |
| Parameter | Value |
|---|---|
| Number of poles | 4 |
| Current at 40 °C | 250 A |
| Current at 45 °C | 250 A |
| Current at 50 °C | 250 A |
| Current at 55 °C | 243.3 A |
| Current at 60 °C | 236.5 A |
| Current at 65 °C | 229 A |
| Current at 70 °C | 223 A |
| Switching capacity class | H |
| Breaking capacity at 240 V | 220 kA |
| Breaking capacity at 415 V | 154 kA |
| Breaking capacity at 440 V | 36 kA |
| Breaking capacity at 690 V | 17 kA |
| Parameter | Value |
|---|---|
| Overcurrent release (trip unit) type | TM240 |
| Parameter | Value |
|---|---|
| Main circuit connection type | lug terminal |
| Main circuit connector arrangement | Front terminal |
| Protection class (IP), front | IP40 |
| Parameter | Value |
|---|---|
| Undervoltage release | No |
| Voltage trigger | Yes |
| Trip indicator | No |
| Communication function | No |
| Measurement function | No |
| Motor drive option | Yes |
| Auxiliary CO contacts | 2 |
| Parameter | Value |
|---|---|
| Operating temperature, max. | 70 °C |
| Operating temperature, min. | -25 °C |
| Storage temperature, max. | 80 °C |
| Storage temperature, min. | -40 °C |
| Parameter | Value |
|---|---|
| Height | 158 mm |
| Width | 140 mm |
| Depth | 70 mm |
Its 220 kA breaking capacity at 240 V handles high-fault scenarios typical of large transformer secondaries or bus-tie applications — the interrupting rating drops to 154 kA at 415 V and 36 kA at 440 V, so selectivity studies need to account for the actual system voltage.
The TM240 thermal-magnetic release provides fixed overload and short-circuit protection with no field-adjustable trip curve, so coordination with downstream breakers must be verified at the design stage.
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Rated continuous current 250 A, breaking capacity 220 kA at 240 V, 154 kA at 415 V, 36 kA at 440 V, and 17 kA at 690 V. It is a 4-pole line-protection device with a TM240 thermal-magnetic release and two auxiliary switches HQ.
Alternative models and sibling configurations in the same Siemens series. For obsolete or discontinued parts, these models can serve as compatible replacements or functional alternatives for plant maintenance.
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