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The Siemens SENTRON 3VA5120-4EF32-0AA0 is a 3-pole molded-case circuit breaker designed for system protection applications. It features a rated insulation voltage of 800V and an operating voltage of up to 690V AC.
This circuit breaker has an operational current rating of 20A at 40°C, with a maximum power loss of 12.2W. It offers significant breaking capacities, including 55kA at 240V and 36kA at 415V according to IEC 60947 standards, and 25kA at 480V according to UL 489 standards.
The mechanical service life is typically 20,000 switching cycles, with electrical endurance varying based on voltage and load conditions. The unit is designed for DIN rail mounting and has dimensions of 140mm height, 76.2mm width, and 76.5mm depth.
It includes overload protection with an adjustable response current from 14A to 20A and short-circuit protection with a fixed multiple of In. The overcurrent release type is TM240 with LI protection function.
| 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 20A at 40°C, with variations at higher temperatures.
The rated insulation voltage is 800V, and the rated operational voltage at AC is 690V.
According to UL 489, the breaking capacity is 25kA at 480V. According to IEC 60947, it is 55kA at 240V and 36kA at 415V.
This circuit breaker is designed for DIN rail mounting.
The overcurrent release offers LI protection.