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This Siemens 3VA5120-4ED21-1AA0 is a 2-pole molded-case circuit breaker from the 3VA5 series, designed for system protection applications. It offers a rated operational current of 20A, with performance maintained up to 50°C. The breaker provides overload protection set at 20A and short-circuit protection at 15 times the nominal current.
With a breaking capacity of 25kA at 480V and 65kA at 240V, this circuit breaker ensures reliable protection. It is built with a TM210 overcurrent release and features an LI protection function. The unit is designed for DIN rail mounting and has a mechanical service life of up to 15,000 switching cycles.
The breaker operates within an ambient temperature range of -25°C to 70°C and has a front protection class of IP40. It is also specified as HACR Type, suitable for Heating, Air Conditioning, and Refrigeration circuits. An optional motor drive can be added.
Key electrical specifications include a maximum power loss of 8W and an active power loss of 4W per pole. Electrical endurance ratings vary by voltage, with 8,000 cycles at 380/415V and 480V, and 4,000 cycles at 600V and 690V.
| 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.
The breaking capacity is 25kA at 480V.
It has 2 poles.
It is designed for DIN rail mounting.
The operating temperature range is from -25°C minimum.
The RoHS status is RoHS3 Compliant.