Siemens SENTRON 3VA1140-4EF36-0JC0, molded case circuit breaker, 3-pole, 40 A rated continuous current, TM240 thermal-magnetic release, interrupting capacity 121 kA at 240 V, 75.6 kA at 415 V, shunt trip, 2 HQ auxiliary switches.
| Parameter | Value |
|---|---|
| Product designation | Molded case circuit breaker |
| Brand / range | SENTRON |
| Product version | Line protection |
| Integrated auxiliary / alarm switch ref. | 3VA9988-0AA12 |
| Parameter | Value |
|---|---|
| Number of poles | 3 |
| Current at 40 °C | 40 A |
| Current at 45 °C | 40 A |
| Current at 50 °C | 40 A |
| Current at 55 °C | 38.4 A |
| Current at 60 °C | 37.6 A |
| Current at 65 °C | 36.8 A |
| Current at 70 °C | 36 A |
| Switching capacity class | S |
| Breaking capacity at 240 V | 121 kA |
| Breaking capacity at 415 V | 75.6 kA |
| Breaking capacity at 440 V | 52.5 kA |
| Breaking capacity at 690 V | 11.9 kA |
| Parameter | Value |
|---|---|
| Overcurrent release (trip unit) type | TM240 |
| Parameter | Value |
|---|---|
| Main circuit connection type | box terminal |
| Main circuit connector arrangement | Front terminal |
| Protection class (IP), front | IP40 |
| Parameter | Value |
|---|---|
| Undervoltage release | No |
| Voltage trigger | Yes |
| Trip indicator | No |
| Communication function | No |
| Measurement function | No |
| 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 |
|---|---|
| Height | 130 mm |
| Width | 76.2 mm |
| Depth | 70 mm |
It carries a rated continuous current of 40 A across ambient temperatures up to 50 °C, then derates to 36 A at 70 °C — so for a panel running warm, plan on 36 A continuous, not the full 40 A. Interrupting capacity is the headline here: 121 kA at 240 V, 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at 690 V.
The IP40 front protection means it's fine for a dry indoor enclosure; no washdown rating, so keep it behind a gland plate in clean environments.
Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — no stock figures or price lists are published here.
121 kA at 240 V, which covers high-fault applications like transformer secondaries or busway-fed panels.
36 A at 70 °C ambient. The breaker holds 40 A up to 50 °C, then derates linearly to 36 A at 70 °C.
Yes, it is equipped with a shunt trip (STL) release for remote tripping, plus two HQ auxiliary switches 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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