Siemens SENTRON 3VA2440-7MN32-0CB0, molded case circuit breaker, 3-pole, 400 A, motor protection version, ETU350M electronic trip unit, 330 kA at 240 V, undervoltage release.
| Parameter | Value |
|---|---|
| Product designation | Molded case circuit breaker |
| Brand / range | SENTRON |
| Product version | Motor protection |
| Basic switch (supplied) ref. | 3VA24407MN320AA0 |
| Integrated auxiliary / alarm switch ref. | 3VA9988-0AA11 |
| Parameter | Value |
|---|---|
| Number of poles | 3 |
| Current at 40 °C | 400 A |
| Current at 45 °C | 400 A |
| Current at 50 °C | 400 A |
| Current at 55 °C | 400 A |
| Current at 60 °C | 400 A |
| Current at 65 °C | 400 A |
| Current at 70 °C | 400 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 | 9 kA |
| Power loss, max. | 63.3 W |
| Parameter | Value |
|---|---|
| Overcurrent release (trip unit) type | ETU350M |
| Overcurrent protection function | LSI |
| Ground-fault monitoring | Without |
| Parameter | Value |
|---|---|
| Main circuit connection type | Lug terminal |
| Main circuit connector arrangement | Front terminal |
| Protection class (IP), front | IP40 |
| Parameter | Value |
|---|---|
| Undervoltage release | Yes |
| Voltage trigger | No |
| 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 | 248 mm |
| Width | 138 mm |
| Depth | 110 mm |
| Height (in) | 9.8 in |
| Width (in) | 5.4 in |
| Depth (in) | 4.3 in |
Siemens SENTRON 3VA2440-7MN32-0CB0 is a 3-pole molded case circuit breaker rated 400 A continuous at 40 °C, with an ETU350M electronic trip unit and undervoltage release. It's the motor protection version of the 3VA2 frame.
The ETU350M trip unit handles motor protection curves, and the phase failure detection catches a lost leg before the motor cooks. That's a 3-pole frame that fits standard SENTRON mounting — bolt it to the backplate or mount on a DIN rail adapter.
The ETU350M is an electronic trip unit designed for motor protection. It provides adjustable overload and short-circuit protection with phase failure detection, and works with the undervoltage release to drop the load on power loss.
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