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The Siemens 3VA5103-1MU31-0AA0 is a 3-pole molded-case circuit breaker designed for starter protection. It operates with a rated current of 3A at 40°C, with derating at higher temperatures.
This circuit breaker has a maximum rated operational voltage of 690V AC and an insulation voltage of 800V. It offers a significant short-circuit breaking capacity, with an Icu of 70kA at 415V and an Ics of 5kA at 690V. The adjustable response current (Ii) can be set between 9A and 21A.
With a mechanical service life of 15,000 cycles and electrical endurance ratings of up to 8,000 cycles, this breaker is built for durability. It is housed in a compact frame with dimensions of 76.2mm width and 76.5mm depth, designed for DIN rail mounting.
The unit operates within an ambient temperature range of -25°C to 70°C and has a protection class of IP40 on the front. It is also HACR Type listed, suitable for Heating, Air Conditioning, and Refrigeration applications.
| 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 3A at 40°C, with derating to 2.64A at 70°C.
The maximum rated operational voltage (Ue) is 690V AC at 50/60Hz.
The maximum short-circuit current (Icu) is 70kA at 415V, and the operating short-circuit current (Ics) is 5kA at 690V.
The circuit breaker has a height of 140mm, a width of 76.2mm, and a depth of 76.5mm.
The ambient operating temperature range is from -25°C to 70°C.
Yes, the design of the load switch is according to UL 489 for Heating, Air Conditioning, and Refrigeration circuit breakers (HACR Type).
The RoHS status is RoHS3 Compliant.