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The Siemens 3VA5120-5ED21-0AA0 is a 2-pole molded-case circuit breaker from the 3VA5 series, designed for system protection. It features a rated operational current of 20A at 40°C and a maximum rated operational voltage of 415V AC.
This circuit breaker provides a breaking capacity of 35kA at 480V according to UL 489 standards and 55kA at 415V according to IEC 60947 standards. It includes overload protection (Ir=20A) and fixed short-circuit protection (Ii=15 x In).
The device has a mechanical service life of typically 15,000 switching cycles and an electrical endurance of 8,000 cycles at 380/415V AC. It is designed for DIN rail mounting and has dimensions of 140mm height, 50.8mm width, and 76.5mm depth.
| Qty | Low | High |
|---|---|---|
| 1+ | $0.99 | $0.99 |
Estimated market price range - modelled values for guidance only, not live distributor offers.
The continuous current rating (Iu) is 20A at 40°C and 45°C, with slight derating at higher temperatures.
The maximum rated operational voltage for AC is 415V at 50/60Hz, and for DC it is 250V.
The breaking capacity is 35kA at 480V according to UL 489, and 55kA at 415V according to IEC 60947.
This circuit breaker is designed for DIN rail mounting.