Siemens SENTRON 3VA1150-4EF32-0HA0, molded case circuit breaker, 3-pole, 50 A (40 °C), 121 kA at 240 V, line protection, shunt trip, 70 mm depth × 76.2 mm width × 130 mm height.
| Parameter | Value |
|---|---|
| Product designation | Molded case circuit breaker |
| Brand / range | SENTRON |
| Basic switch (supplied) ref. | 3VA11504EF320AA0 |
| Parameter | Value |
|---|---|
| Number of poles | 3 |
| Rated operational voltage Ue (AC) | 690 V |
| Rated insulation voltage Ui | 800 V |
| Current at 40 °C | 50 A |
| Current at 45 °C | 50 A |
| Current at 50 °C | 50 A |
| Current at 55 °C | 49 A |
| Current at 60 °C | 48 A |
| Current at 65 °C | 46 A |
| Current at 70 °C | 45 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. | 14.6 W |
| Parameter | Value |
|---|---|
| Overcurrent release (trip unit) type | TM240 |
| 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 | Yes |
| 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 | 76.2 mm |
| Depth | 70 mm |
| Height (in) | 5.12 in |
| Width (in) | 3 in |
| Depth (in) | 2.76 in |
Breaking capacity hits 121 kA at 240 V and 75.6 kA at 415 V, which means it handles high-fault scenarios downstream of a large transformer without cascading upstream.
The 130 mm height leaves room for cable glands and auxiliary contact blocks above the breaker. Spring-cage or screw terminals accept 0.2–2.5 mm² conductors — strip length 8 mm for the cage version.
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Depth is 70 mm, width is 76.2 mm, height is 130 mm. These dimensions match the standard 3-pole MCCB envelope for DIN-rail or panel-mount installation.
121 kA at 240 V, which covers high-fault installations. At 415 V it breaks 75.6 kA, and at 690 V it still interrupts 11.9 kA.
Yes, the design of the auxiliary release is a shunt trip (STL), allowing remote tripping via a control voltage. The undervoltage release is not present on this variant.
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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