Siemens SENTRON 3VA1150-5EF32-0KH0, molded case circuit breaker, 3-pole, 50 A rated at 40 °C, line protection design, 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. | 3VA11505EF320AA0 |
| Integrated auxiliary / alarm switch ref. | 3VA9988-0AB12 |
| 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 | 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. | 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 | Yes |
| Communication function | No |
| Measurement function | No |
| Motor drive option | Yes |
| Auxiliary CO contacts | 3 |
| 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 |
It's rated 50 A continuous at 40 °C and holds that rating up to 50 °C ambient — above that it derates to 49 A at 55 °C and 45 A at 70 °C, so if your panel runs hot you need to account for the thermal curve. Breaking capacity scales with system voltage: 187 kA at 240 V, 121 kA at 415 V, 75.6 kA at 440 V, and 17 kA at 500 V or 690 V.
The trip indicator and voltage trigger are both present, so you get visual and electrical status feedback for the control system.
Both are 3-pole SENTRON MCCBs with the same 76.2 mm width and 70 mm depth, so they share the same mounting footprint and panel cutout. The 3VA1150-5EF32-0KH0 adds a shunt trip and extra aux switches, so wiring differs for the control circuit, but the breaker itself drops into the same slot.
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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