Siemens SENTRON molded case circuit breaker, 3VA1120-5EF32-0DC0, 3-pole, 20 A, 187 kA at 240 V, line protection, with undervoltage release.
| Parameter | Value |
|---|---|
| Product designation | Molded case circuit breaker |
| Brand / range | SENTRON |
| Basic switch (supplied) ref. | 3VA11205EF320AA0 |
| Integrated auxiliary / alarm switch ref. | 3VA9988-0AA12 |
| Parameter | Value |
|---|---|
| Number of poles | 3 |
| Rated operational voltage Ue (AC) | 690 V |
| Rated insulation voltage Ui | 800 V |
| Current at 40 °C | 20 A |
| Current at 45 °C | 20 A |
| Current at 50 °C | 20 A |
| Current at 55 °C | 20 A |
| Current at 60 °C | 19 A |
| Current at 65 °C | 19 A |
| Current at 70 °C | 19 A |
| Switching capacity class | M |
| Breaking capacity at 240 V | 187 kA |
| Breaking capacity at 415 V | 121 kA |
| Breaking capacity at 440 V | 75.6 kA |
| Breaking capacity at 500 V | 17 kA |
| Breaking capacity at 690 V | 17 kA |
| Power loss, max. | 14.5 W |
| Parameter | Value |
|---|---|
| Overcurrent release (trip unit) type | TM240 |
| Overcurrent protection function | LI |
| Ground-fault monitoring | Without |
| Grounding protection function | No |
| Parameter | Value |
|---|---|
| Main circuit connection type | nut keeper kit on both ends |
| 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 |
|---|---|
| Mechanical service life (operating cycles), typ. | 20 000 |
| Height | 130 mm |
| Width | 76.2 mm |
| Depth | 70 mm |
| Height (in) | 5.12 in |
| Width (in) | 3 in |
| Depth (in) | 2.76 in |
The Siemens SENTRON 3VA1120-5EF32-0DC0 is a 3-pole molded case circuit breaker (MCCB) rated 20 A continuous at up to 55 °C ambient — above that it derates to 19 A at 70 °C, so if your panel runs hot, size for the lower figure.
At 130 mm high, 76.2 mm wide, and 70 mm deep, this MCCB fits a standard 3-pole breaker slot in a SENTRON distribution panel or any DIN-rail enclosure. The 70 mm depth means it clears most gland plates and back-panel wiring troughs without interference.
This part is sourced and quoted to order against an RFQ through independent distribution. Submit a request for quote to confirm current pricing and availability.
Breaking capacity is 187 kA at 240 V, 121 kA at 415 V, 75.6 kA at 440 V, and 17 kA at 500 V and 690 V.
Yes, it comes with an undervoltage release (UVR) as standard, which drops the breaker when control voltage is lost.
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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