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The Siemens SENTRON 3VA5145-4EC32-0AA0 is a molded-case circuit breaker designed for reliable system protection. This 3-pole unit features a rated operational current of 45A at 40°C and a maximum breaking capacity of 25kA at 480V according to UL 489 standards. It also meets IEC standards with a breaking capacity of 55kA at 240V.
With a rated insulation voltage of 800V and an operating voltage of up to 690V AC, this circuit breaker is suitable for various industrial applications. It includes overload protection with Ir=45A and fixed short-circuit protection with Ii=5...10 x In. The overcurrent release is of type TM230 with LI protection function.
Designed for easy installation, the 3VA5145-4EC32-0AA0 features a DIN rail mounting type. Its mechanical dimensions are 140mm in height, 76.2mm in width, and 76.5mm in depth. The breaker has a mechanical service life of 20,000 switching cycles and electrical endurance ratings suitable for demanding environments.
| 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 45A at 40°C.
The breaking capacity is 25kA at 480V.
The maximum rated operational voltage with DC is 500V, and the rated operating voltage at AC is 690V.
It is a 3-pole circuit breaker.
It is designed for DIN rail mounting.
The typical mechanical service life is 20,000 switching cycles.