Siemens SENTRON 3VA2440-5MN32-0BH0, molded case circuit breaker (MCCB), 3-pole, 400 A rated current, motor protection design, with undervoltage release and phase failure detection.
| Parameter | Value |
|---|---|
| Product designation | Molded case circuit breaker |
| Brand / range | SENTRON |
| Basic switch (supplied) ref. | 3VA2440-5MN32-0AA0 |
| 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 | 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 | M |
| Breaking capacity at 240 V | 187 kA |
| Breaking capacity at 415 V | 121 kA |
| Breaking capacity at 440 V | 121 kA |
| Breaking capacity at 500 V | 75.6 kA |
| Breaking capacity at 690 V | 9 kA |
| Power loss, max. | 66 W |
| Parameter | Value |
|---|---|
| Overcurrent release (trip unit) type | ETU350M |
| Overcurrent protection function | LSI |
| Ground-fault monitoring | Without |
| Grounding protection function | No |
| 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 | Yes |
| Voltage trigger | No |
| Trip indicator | Yes |
| Communication function | No |
| Measurement function | No |
| Motor drive option | Yes |
| Auxiliary CO contacts | 3 |
| 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. | 20 000 |
| Height | 248 mm |
| Width | 138 mm |
| Depth | 110 mm |
| Height (in) | 9.76 in |
| Width (in) | 5.43 in |
| Depth (in) | 4.33 in |
The Siemens 3VA2440-5MN32-0BH0 is a 3-pole SENTRON molded case circuit breaker rated 400 A continuously across the full 40 °C to 70 °C ambient range — no derating needed as the panel warms up, which keeps the line moving through summer peaks or tight enclosures.
Maximum power loss is 66 W, so factor that into the enclosure thermal budget if grouping multiple breakers in a sealed cabinet.
Yes, phase failure detection is built in, along with an undervoltage release for loss-of-control-voltage tripping.
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