The Siemens SENTRON 3VM1450-4GD42-0AA0 is a 4-pole molded case circuit breaker (MCCB) for line protection, fitted with a TM210 thermal-magnetic release. It carries a continuous current of 500 A at 40 °C ambient, derating to 452 A at 70 °C — so in a warm enclosure you size the load side for the lower figure, not the nameplate. The interrupting capacity hits 121 kA at 240 V AC and 76 kA at 415 V AC, which means it can clear a bolted fault on a large transformer secondary without the arc flashing over. Rated insulation voltage is 800 V; maximum operating voltage is 690 V AC or 500 V DC.
Siemens 3VM1450-4GD42-0AA0 SENTRON MCCB, 500A, 4-Pole, 121kA
MPN3VM1450-4GD42-0AA0
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Siemens SENTRON 3VM1450-4GD42-0AA0, 4-pole molded case circuit breaker, line protection, TM210 release, rated 500A at 40°C, breaking capacity 121 kA at 240 V AC.
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026
Specifications
| Parameter | Value |
|---|---|
| Product designation | Molded case circuit breaker |
| Brand / range | SENTRON |
| Product version | Line protection |
| Parameter | Value |
|---|---|
| Number of poles | 4 |
| Rated operational voltage Ue (AC) | 690 V |
| Current at 40 °C | 500 A |
| Current at 45 °C | 500 A |
| Current at 50 °C | 500 A |
| Current at 55 °C | 488 A |
| Current at 60 °C | 476 A |
| Current at 65 °C | 464 A |
| Current at 70 °C | 452 A |
| Switching capacity class | S |
| Breaking capacity at 240 V | 121 kA |
| Breaking capacity at 415 V | 76 kA |
| Breaking capacity at 440 V | 76 kA |
| Breaking capacity at 500 V | 53 kA |
| Power loss, max. | 123 W |
| Parameter | Value |
|---|---|
| Overcurrent release (trip unit) type | TM210 |
| Overcurrent protection function | LI |
| Ground-fault monitoring | Without |
| Parameter | Value |
|---|---|
| Main circuit connection type | nut keeper kit on both ends |
| Main circuit connector arrangement | Front connection |
| 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 |
|---|---|
| Height | 248 mm |
| Width | 184 mm |
| Depth | 110 mm |
| Height (in) | 9.76 in |
| Width (in) | 7.24 in |
| Depth (in) | 4.33 in |
Product details
Frequently asked questions
Where can I buy the 3VM1450-4GD42-0AA0 and what is the lead time?
The part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — no stock or lead-time figures are published here.
MPN
3VM1450-4GD42-0AA0