Siemens SENTRON series, Molded case circuit breaker, 3VA2140-6KQ32-0KF0, 40 A rated, 3-pole, 242 kA breaking capacity at 240 V AC.
| Parameter | Value |
|---|---|
| Product designation | Molded case circuit breaker |
| Brand / range | SENTRON |
| Basic switch (supplied) ref. | 3VA21406KQ320AA0 |
| 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 | 40 A |
| Current at 45 °C | 40 A |
| Current at 50 °C | 40 A |
| Current at 55 °C | 40 A |
| Current at 60 °C | 40 A |
| Current at 65 °C | 40 A |
| Current at 70 °C | 40 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. | 1.6 W |
| Parameter | Value |
|---|---|
| Overcurrent release (trip unit) type | ETU860 |
| Overcurrent protection function | LSIG |
| Ground-fault monitoring | Summation current formation L-conductor |
| Grounding protection function | Yes |
| 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 | Yes |
| Measurement function | Yes |
| Motor drive option | Yes |
| 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. | 25 000 |
| Height | 181 mm |
| Width | 105 mm |
| Depth | 86 mm |
| Height (in) | 7.13 in |
| Width (in) | 4.13 in |
| Depth (in) | 3.39 in |
The breaker carries a massive 242 kA breaking capacity at 240 V AC, dropping to 187 kA at 415 V and 440 V, then 121 kA at 500 V, and 3.7 kA at 690 V.
No special cutout; it mounts on the standard MCCB footprint.
No derating curve to chase across the typical panel temperature range — that's unusual for an MCCB and simplifies the panel builder's thermal budget. Max power loss is 1.6 W, which is negligible for heat buildup in a multi-breaker enclosure.
Submit an RFQ. This part is sourced and quoted to order through independent distribution. Current pricing and lead time are confirmed at quote time — no stock figures or price lists published here.
Rated continuous current is 40 A (full-scale), with an adjustable initial value of 16 A. Breaking capacity is 242 kA at 240 V AC, 187 kA at 415 V and 440 V, 121 kA at 500 V, and 3.7 kA at 690 V. It's a 3-pole unit with a shunt trip release and a trip indicator.
Height is 181 mm, width is 105 mm, depth is 86 mm. The 86 mm depth is the key dimension for enclosure fit — it fits a standard 200 mm deep panel with room for wiring.
Yes, it includes a communication function for integration into a monitored distribution system, plus a voltage trigger and trip indicator.
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.
No related articles