Siemens SENTRON 3VA1050-3ED32-0DC0, 3-pole molded case circuit breaker, 50 A rated at 40 °C, 75.6 kA breaking capacity at 240 V, line protection design with undervoltage release.
| Parameter | Value |
|---|---|
| Product designation | Molded case circuit breaker |
| Brand / range | SENTRON |
| Basic switch (supplied) ref. | 3VA10503ED320AA0 |
| Integrated auxiliary / alarm switch ref. | 3VA9988-0AA12 |
| 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 | N |
| Breaking capacity at 240 V | 75.6 kA |
| Breaking capacity at 415 V | 52.5 kA |
| Breaking capacity at 440 V | 32 kA |
| Breaking capacity at 500 V | 7.5 kA |
| Breaking capacity at 690 V | 7.5 kA |
| Power loss, max. | 17.1 W |
| Parameter | Value |
|---|---|
| Overcurrent release (trip unit) type | TM210 |
| 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 | Yes |
| Voltage trigger | No |
| Trip indicator | No |
| Communication function | No |
| Measurement function | No |
| Motor drive option | No |
| Auxiliary CO contacts | 2 |
| 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 |
If your panel runs hotter — say 55 °C — it derates to 49 A; at 65 °C it's 46 A. That matters when you're sizing for a crowded enclosure. At 415 V (common in European industrial) it still handles 52.5 kA, which covers most distribution transformer ratings.
The 3-pole form factor matches typical 3-phase feeder positions. No communication module onboard; this is a standalone breaker.
It is rated 52.5 kA at 415 V, which covers most industrial distribution transformer secondary faults.
This part is sourced through independent distribution channels and quoted to order against an RFQ. Availability and current pricing are confirmed at quote time.
Yes, it is equipped with an undervoltage release (UVR) as the auxiliary release, plus two auxiliary switches (HQ type) for status indication.
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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