Siemens SENTRON 3VA1225-6EE32-0AA0, molded case circuit breaker, 3-pole, TM220 thermal-magnetic release, rated 250 A at 40 °C, breaking capacity 220 kA at 240 V AC.
| Parameter | Value |
|---|---|
| Product designation | Molded case circuit breaker |
| Brand / range | SENTRON |
| Parameter | Value |
|---|---|
| Number of poles | 3 |
| Rated operational voltage Ue (AC) | 690 V |
| Rated insulation voltage Ui | 800 V |
| Current at 40 °C | 250 A |
| Current at 45 °C | 250 A |
| Current at 50 °C | 250 A |
| Current at 55 °C | 243 A |
| Current at 60 °C | 237 A |
| Current at 65 °C | 230 A |
| Current at 70 °C | 223 A |
| Switching capacity class | H |
| Breaking capacity at 240 V | 220 kA |
| Breaking capacity at 415 V | 154 kA |
| Breaking capacity at 440 V | 75.6 kA |
| Breaking capacity at 500 V | 30 kA |
| Breaking capacity at 690 V | 17 kA |
| Power loss, max. | 57 W |
| Parameter | Value |
|---|---|
| Overcurrent release (trip unit) type | TM220 |
| 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 | Yes |
| 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 | 158 mm |
| Width | 105 mm |
| Depth | 70 mm |
| Height (in) | 6.22 in |
| Width (in) | 4.13 in |
| Depth (in) | 2.76 in |
Rated 250 A continuously at 40 °C, it holds that full rating through 50 °C and derates to 223 A at 70 °C — useful when the breaker sits near other heat sources in a sealed enclosure. Breaking capacity is 220 kA at 240 V AC, dropping to 154 kA at 415 V and 17 kA at 690 V — the high interrupt rating at low voltage suits it for transformer-secondary or large-bus applications where available fault current is high.
Within the same SENTRON family, a lower-rated frame like 3VA1112-5EE32-0AA0 carries a different ampere rating and release; the 3VA1225-6EE32-0AA0 is the 250 A TM220 variant and should be selected by the required continuous current and interrupt rating rather than substituted by frame size alone.
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