Siemens SENTRON 3VA1140-3EF32-0AF0, molded case circuit breaker, 3-pole, 40 A rated continuous current, TM240 thermal-magnetic release, line protection, 75.6 kA breaking capacity at 240 V.
| Parameter | Value |
|---|---|
| Product designation | Molded case circuit breaker |
| Brand / range | SENTRON |
| Product version | Line protection |
| Integrated auxiliary / alarm switch ref. | 3VA9988-0AB12 |
| 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 | N |
| Breaking capacity at 240 V | 75.6 kA |
| Breaking capacity at 415 V | 52.5 kA |
| Breaking capacity at 440 V | 32 kA |
| Breaking capacity at 690 V | 10.5 kA |
| Parameter | Value |
|---|---|
| Overcurrent release (trip unit) type | TM240 |
| Parameter | Value |
|---|---|
| Main circuit connection type | lug terminal |
| Main circuit connector arrangement | Front terminal |
| Protection class (IP), front | IP40 |
| Parameter | Value |
|---|---|
| Undervoltage release | No |
| Voltage trigger | No |
| Trip indicator | Yes |
| 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 |
Its 40 A rated continuous current (Iu) holds flat from 40 °C to 50 °C, then derates to 36 A at 70 °C — so a panel ambient of 55 °C or higher clips the usable load by 1.6 A to 4 A, something a panel builder needs to factor into the fill factor and gland plate layout. Breaking capacity steps with system voltage: 75.6 kA at 240 V, 52.5 kA at 415 V, 32 kA at 440 V, and 10.5 kA at 690 V.
Latching endurance rated at 15,000 operations. The trip indicator gives a local visual flag for fault isolation.
The depth is 70 mm.
The width is 76.2 mm.
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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