SENTRON 3VA1125-5GE42-0AA0 molded case circuit breaker, 4-pole, 25 A, TM220 thermal-magnetic release, 187 kA at 240 V.
| Parameter | Value |
|---|---|
| Product designation | Molded case circuit breaker |
| Brand / range | SENTRON |
| Parameter | Value |
|---|---|
| Number of poles | 4 |
| Rated operational voltage Ue (AC) | 690 V |
| Rated insulation voltage Ui | 800 V |
| Current at 40 °C | 25 A |
| Current at 45 °C | 25 A |
| Current at 50 °C | 25 A |
| Current at 55 °C | 24 A |
| Current at 60 °C | 24 A |
| Current at 65 °C | 23 A |
| Current at 70 °C | 23 A |
| Switching capacity class | M |
| Breaking capacity at 240 V | 187 kA |
| Breaking capacity at 415 V | 121 kA |
| Breaking capacity at 440 V | 75.6 kA |
| Breaking capacity at 500 V | 17 kA |
| Breaking capacity at 690 V | 17 kA |
| Power loss, max. | 8.5 W |
| Parameter | Value |
|---|---|
| Overcurrent release (trip unit) type | TM220 |
| Overcurrent protection function | LI |
| 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 | 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 |
|---|---|
| Mechanical service life (operating cycles), typ. | 20 000 |
| Height | 130 mm |
| Width | 101.6 mm |
| Depth | 70 mm |
| Height (in) | 5.12 in |
| Width (in) | 4 in |
| Depth (in) | 2.76 in |
The interrupting capacity hits 187 kA at 240 V AC, 121 kA at 415 V, and 75.6 kA at 440 V, so it handles high-fault utility feeds and transformer secondaries without cascading upstream. The 4-pole design makes it the right fit for three-phase-plus-neutral distribution or dual-fed transfer schemes where you need to break all live conductors.
Full 25 A rating holds through 50 °C ambient; at 55 °C it derates to 24 A, and at 70 °C it's still good for 23 A.
121 kA at 415 V AC, which covers most industrial secondary-distribution fault levels.
Sourced and quoted to order against an RFQ through independent distribution; availability and pricing confirmed at quote time.
TM220 is a fixed thermal-magnetic overcurrent release — no adjustable trip dial, so the 25 A rating is the only setting. The thermal element protects against sustained overloads; the magnetic element handles short-circuit instantaneously.
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