Siemens SENTRON 3VA1112-4FE42-0AA0, molded case circuit breaker, 4-pole, 125 A (40 °C), TM220 release, 70 mm depth, 121 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 | 125 A |
| Current at 45 °C | 125 A |
| Current at 50 °C | 125 A |
| Current at 55 °C | 122 A |
| Current at 60 °C | 120 A |
| Current at 65 °C | 117 A |
| Current at 70 °C | 114 A |
| Switching capacity class | S |
| Breaking capacity at 240 V | 121 kA |
| Breaking capacity at 415 V | 75.6 kA |
| Breaking capacity at 440 V | 52.5 kA |
| Breaking capacity at 500 V | 11.9 kA |
| Breaking capacity at 690 V | 11.9 kA |
| Power loss, max. | 28.1 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 125 A rating is the continuous current it can carry without tripping at that ambient; above 55 °C it derates to 122 A at 55 °C, 120 A at 60 °C, 117 A at 65 °C, and 114 A at 70 °C, so if this breaker lives in a hot panel or near other heat sources, you need to account for that drop.
Breaking capacity is the real selector here. At 415 V it's 75.6 kA, at 440 V it's 52.5 kA, and at 500 V and 690 V it drops to 11.9 kA.
The listed depth is 70 mm (2.76 in). That's the body depth behind the panel face; the breaker extends forward past the front face by the handle and terminal cover height.
The listed width is 101.6 mm (4 in). That's the standard 4-pole MCCB footprint for the SENTRON 3VA family at this rating.
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