Siemens SENTRON 3VA2125-6JP46-0AA0, molded case circuit breaker, 4-pole, 25 A continuous, ETU550 electronic trip, interrupting 242 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 | 25 A |
| Current at 60 °C | 25 A |
| Current at 65 °C | 25 A |
| Current at 70 °C | 25 A |
| Switching capacity class | H |
| Breaking capacity at 240 V | 242 kA |
| Breaking capacity at 415 V | 187 kA |
| Breaking capacity at 440 V | 187 kA |
| Breaking capacity at 500 V | 121 kA |
| Breaking capacity at 690 V | 3.7 kA |
| Power loss, max. | 0.6 W |
| Parameter | Value |
|---|---|
| Overcurrent release (trip unit) type | ETU550 |
| Overcurrent protection function | LSI |
| Ground-fault monitoring | Without |
| Grounding protection function | No |
| Parameter | Value |
|---|---|
| Main circuit connection type | double-sided box terminal |
| Main circuit connector arrangement | Front terminal |
| Protection class (IP), front | IP40 |
| Parameter | Value |
|---|---|
| Undervoltage release | No |
| Voltage trigger | No |
| Trip indicator | No |
| Communication function | Yes |
| 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. | 25 000 |
| Height | 181 mm |
| Width | 140 mm |
| Depth | 86 mm |
| Height (in) | 7.13 in |
| Width (in) | 5.51 in |
| Depth (in) | 3.39 in |
The interrupting capacity reaches 242 kA at 240 V, 187 kA at 415 V and 440 V, 121 kA at 500 V, and 3.7 kA at 690 V — figures that govern its fault-clearing capability at each voltage level.
The 4-pole construction suits three-phase systems with a switched neutral or where all poles must open simultaneously.
It mounts in a standard panel or enclosure footprint for 4-pole MCCBs of this frame size.
The 3VA2125-8KQ42-0AA0 is a peer in the same SENTRON 3VA2 frame family. The key difference is the trip unit: the 6JP46 uses an ETU550 electronic trip, while the 8KQ42 uses a different trip configuration. Verify the trip curve and communication requirements before substituting — the physical footprint and pole count are the same, but the protection settings may differ.
The depth is 86 mm, which is 3.39 inches. This is the dimension from the mounting surface to the front of the breaker, not including any protruding handle or accessories.
Both breakers share the same SENTRON 3VA2 frame dimensions and pole count, so the physical fit and bus-bar connections are identical. No rewiring of the panel is needed for the mechanical drop-in. However, the trip unit difference (ETU550 vs. the 8KQ42's unit) means the protection settings may require reconfiguration via the trip-unit interface.
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