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This Siemens SENTRON 3VA5 series molded case circuit breaker (MCCB) is designed for robust protection in electrical systems. It features a 4-pole configuration with a current rating of 250A and a high breaking capacity of 100 kA at 480V.
The breaker operates at a rated AC voltage of 690V and a rated DC voltage of 750V. It includes a thermal magnetic tripping mechanism with adjustable settings for Ii (instantaneous trip) from 2500A to 2500A and InN (long-time trip) from 0A to 0A. The device has a mechanical service life of 20,000 switching cycles and an electrical endurance of up to 8,000 cycles at 380/415V.
With a protection class of IP40 on the front, it offers defense against dust ingress. The dimensions are 185mm in height, 140mm in width, and 83mm in depth. Mounting is via DIN rail. An optional motor drive extension is available.
This circuit breaker is suitable for applications requiring reliable overcurrent protection, including heating, air conditioning, and refrigeration (HACR Type) circuits, as indicated by its UL 489 listing.
| Qty | Low | High |
|---|---|---|
| 1+ | $0.99 | $0.99 |
Estimated market price range - modelled values for guidance only, not live distributor offers.
The operational current rating is 250A at 40°C, with decreasing ratings at higher ambient temperatures up to 216A at 70°C.
The breaking capacity is 100 kA at 480 V.
The rated AC operating voltage is 690 V.
This circuit breaker has 4 poles.
The typical mechanical service life is 20,000 switching cycles.
The protection class on the front is IP40.
The operation temperature ranges from 25 °C to 70 °C.