Its TM240 thermal-magnetic release handles overloads and short-circuits up to 220 kA at 240 V, 154 kA at 415 V, 36 kA at 440 V, and 17 kA at 690 V — meaning it can interrupt fault currents at the main breaker level without upstream coordination issues. The 250 A rating holds flat from 40 °C to 50 °C, then derates to 243.3 A at 55 °C, 236.5 A at 60 °C, 229 A at 65 °C, and 223 A at 70 °C — so in a warm enclosure you lose roughly 11% capacity at the top of the operating range.
Siemens 3VA1225-6EF42-0CA0 SENTRON MCCB, 250 A, 4-Pole, Line
MPN3VA1225-6EF42-0CA0
Siemens SENTRON 3VA1225-6EF42-0CA0, molded case circuit breaker, 4-pole, 250 A rated continuous current, TM240 overcurrent release, line protection version.
Source DocumentedChannel stated on listing & quote
Condition PhotosReal unit photos / video on request
WhatsApp AnswersFast human replies for machine-down parts
Worldwide DispatchDHL/FedEx — transit quoted per order
Independent China distributor & sourcing agent· Listing updated Sep 2026
Specifications
| Parameter | Value |
|---|---|
| Product designation | Molded case circuit breaker |
| Brand / range | SENTRON |
| Product version | Line protection |
| 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 | Yes |
| Voltage trigger | No |
| Trip indicator | No |
| Communication function | No |
| Measurement function | No |
| Motor drive option | Yes |
| Auxiliary CO contacts | 0 |
| 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 |
Product details
Frequently asked questions
Does this breaker include an undervoltage release?
Yes, it is equipped with an undervoltage release (UVR) designated as 3VA9608-0BB24, which trips the breaker on loss of control voltage.
MPN
3VA1225-6EF42-0CA0