Siemens SENTRON 3VA1120-4ED22-0AA0, molded case circuit breaker, 2-pole, 20 A rated, 121 kA interrupting at 240 V AC, TM210 overcurrent release, line protection design.
| Parameter | Value |
|---|---|
| Product designation | Molded case circuit breaker |
| Brand / range | SENTRON |
| Parameter | Value |
|---|---|
| Number of poles | 2 |
| Rated operational voltage Ue (AC) | 415 V |
| Rated insulation voltage Ui | 500 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 | S |
| Breaking capacity at 240 V | 121 kA |
| Breaking capacity at 415 V | 75.6 kA |
| Power loss, max. | 8 W |
| Parameter | Value |
|---|---|
| Overcurrent release (trip unit) type | TM210 |
| 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 | No |
| Voltage trigger | No |
| Trip indicator | No |
| Communication function | No |
| Measurement function | No |
| Motor drive option | No |
| Auxiliary CO contacts | 0 |
| 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 | 50.8 mm |
| Depth | 70 mm |
| Height (in) | 5.12 in |
| Width (in) | 2 in |
| Depth (in) | 2.76 in |
Rated 20 A continuously at 40 °C, it derates to 19 A at 60 °C and holds that level through 70 °C — the full operating range of the breaker. Interrupting capacity reaches 121 kA at 240 V AC and 75.6 kA at 415 V AC, giving headroom for high-fault panels without cascading upstream.
Maximum power loss is 8 W.
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