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This Siemens 3VA5 molded-case circuit breaker, part number 3VA5120-5EF32-0AA0, is engineered for robust system protection. It features a 3-pole configuration and a rated operational current of 20A at 40°C, with derating at higher temperatures.
The breaker provides a significant breaking capacity, rated at 35kA according to UL 489 at 480V, and 55kA according to IEC 60947 at 415V. It operates with a rated insulation voltage of 800V and a maximum operational voltage of 690V AC.
Designed with a TM240 overcurrent release and LI protection function, this unit is suitable for HACR, HID, and SWD applications. The mechanical service life is rated for a typical 20,000 switching cycles, with electrical endurance varying by voltage and load conditions.
Mounting is facilitated via DIN rail, and the dimensions are 140mm in height, 76.2mm in width, and 76.5mm in depth. The breaker has a maximum power loss of 12.2W.
| Qty | Low | High |
|---|---|---|
| 1+ | $0.99 | $0.99 |
Estimated market price range - modelled values for guidance only, not live distributor offers.
The operational current is 20A at 40°C, with derating to 18A at 70°C.
The breaking capacity is 35kA at 480V according to UL 489, and 55kA at 415V according to IEC 60947.
The rated insulation voltage is 800V, and the rated operational voltage at AC is 690V.
This circuit breaker is designed for DIN rail mounting.
It features TM240 overcurrent release with LI protection function.