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This Siemens 3VA5112-1MU31-0AA0 is a 3-pole molded-case circuit breaker from the 3VA5 series, specifically designed for starter protection applications. It offers a robust current handling capability with a permanent rated current of 125A and an operational current of 125A at 40°C, derating slightly at higher temperatures.
The circuit breaker is built to withstand significant electrical stresses, featuring a maximum breaking capacity (Icu) of 150 kA at 240V and 70 kA at 415V. Its adjustable short-circuit protection ranges from 375A to 875A (Ii).
With a high insulation voltage of 800V and a maximum operational voltage of 690V AC, this breaker is suitable for demanding industrial environments. It operates reliably within an ambient temperature range of -25°C to 70°C and has a mechanical service life of up to 15,000 switching cycles.
The unit is designed for DIN rail mounting and has a protection class of IP40 on the front. It is UL489 listed and meets various international standards including CCC, CE, CSA, EAC, and VDE.
| Qty | Low | High |
|---|---|---|
| 1+ | $0.99 | $0.99 |
Estimated market price range - modelled values for guidance only, not live distributor offers.
The maximum rated operational voltage for this circuit breaker is 690 V AC.
The permanent rated current (Iu) is 125 A, and the operational current at 40°C is also 125 A.
The breaking capacity (Icu) at 415 V is 70 kA, and the operating short-circuit current (Ics) at 415 V is also 70 kA.
The circuit breaker can operate in temperatures ranging from a minimum of -25 °C to a maximum of 70 °C.
The RoHS status is RoHS3 Compliant.
The Moisture Sensitivity Level (MSL) is 1 Unlimited.