Siemens SENTRON 3VA2340-7HN32-0KH0, molded case circuit breaker, 400 A, 3-pole, 330 kA interrupting at 240 V, line protection with shunt trip release.
| Parameter | Value |
|---|---|
| Product designation | Molded case circuit breaker |
| Brand / range | SENTRON |
| Basic switch (supplied) ref. | 3VA2340-7HN32-0AA0 |
| 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 | 400 A |
| Current at 45 °C | 400 A |
| Current at 50 °C | 400 A |
| Current at 55 °C | 385 A |
| Current at 60 °C | 370 A |
| Current at 65 °C | 355 A |
| Current at 70 °C | 340 A |
| Switching capacity class | C |
| Breaking capacity at 240 V | 330 kA |
| Breaking capacity at 415 V | 242 kA |
| Breaking capacity at 440 V | 242 kA |
| Breaking capacity at 500 V | 187 kA |
| Breaking capacity at 690 V | 7.5 kA |
| Power loss, max. | 96 W |
| Parameter | Value |
|---|---|
| Overcurrent release (trip unit) type | ETU350 |
| Overcurrent protection function | LSI |
| Ground-fault monitoring | Without |
| Grounding protection function | No |
| Parameter | Value |
|---|---|
| Main circuit connection type | on both sides nut keeper kit |
| 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 | 248 mm |
| Width | 138 mm |
| Depth | 110 mm |
| Height (in) | 9.76 in |
| Width (in) | 5.43 in |
| Depth (in) | 4.33 in |
The Siemens 3VA2340-7HN32-0KH0 is a SENTRON molded case circuit breaker (MCCB) rated for 400 A continuous current at ambient temperatures up to 50 °C, after which it derates linearly to 340 A at 70 °C. The interrupting ratings are substantial: 330 kA at 240 V, 242 kA at 415/440 V, 187 kA at 500 V, and 7.5 kA at 690 V. The power loss is 96 W maximum, which matters for enclosure thermal management when the breaker is fully loaded.
330 kA at 240 V. That rating drops to 242 kA at 415/440 V, 187 kA at 500 V, and 7.5 kA at 690 V. The 330 kA figure is the highest short-circuit current this breaker can safely interrupt at that voltage level.
This part is sourced through independent distribution channels and quoted to order against an RFQ. Availability and current pricing are confirmed at the time of quote — no stock count or price is published here.
It includes a shunt trip (STL) for remote tripping. It does not include an undervoltage release, ground-fault monitoring, or communication functions.
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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