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This Siemens 3VA5125-1MU31-0AA0 is a 3-pole molded-case circuit breaker from the 3VA5 series, specifically designed for starter protection applications. It features a maximum rated operational current of 125A for the frame size, with a permanent rated current (Iu) of 25A across various ambient temperatures.
The circuit breaker operates at a maximum rated operational voltage of 690V AC (50/60 Hz) and has an insulation voltage of 800V. It provides robust short-circuit protection with a breaking capacity (Icu) of up to 150 kA at 240V and 70 kA at 415V. The adjustable response current (Ii) ranges from 75A to 175A.
Designed for mechanical reliability, it has a typical mechanical service life of 15,000 switching cycles. The unit measures 140 mm in height, 76.2 mm in width, and 76.5 mm in depth, with a front protection class of IP40. It is suitable for operation in ambient temperatures ranging from -25°C to 70°C.
This circuit breaker is approved by multiple agencies including CCC, CE, CSA, EAC, UL489, and VDE, ensuring compliance with various international standards. It is mounted on a DIN rail and features a lever actuator.
| Qty | Low | High |
|---|---|---|
| 1+ | $0.99 | $0.99 |
Estimated market price range - modelled values for guidance only, not live distributor offers.
The maximum insulation voltage is 800 V.
The rated current is 25A.
The breaking capacity at 240V is 150 kA.
It mounts on a DIN rail.
It has a typical mechanical service life of 15,000 switching cycles.
The protection class is IP40 on the front.