Siemens SENTRON 3VA2140-6JQ42-0AA0, molded case circuit breaker, 4-pole, 40 A continuous, 242 kA interrupting at 240 V, line protection with ground-fault monitoring.
| 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 | 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 | ETU560 |
| Overcurrent protection function | LSIG |
| Ground-fault monitoring | Summation current formation L + N 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 | 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 |
Its interrupting capacity hits 242 kA at 240 V, dropping to 187 kA at 415 V and 440 V, then 121 kA at 500 V, and 3.7 kA at 690 V — so at typical 400 V distribution it clears faults up to 187 kA without cascading upstream breakers.
That flat thermal profile simplifies panel sizing when the MCCB sits near transformers or drives that push enclosure temperature.
The part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm commercial offer.
At 240 V it interrupts 242 kA; at 415 V and 440 V, 187 kA; at 500 V, 121 kA; at 690 V, 3.7 kA. The 40 A continuous rating holds flat from 40 °C to 70 °C ambient.
Yes, it includes ground-fault monitoring via summation current formation on L + N conductors.
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