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The Schurter Inc. 4420.0279 is a thermal magnetic circuit breaker designed for equipment protection. This 2-pole unit offers a rated current of 8A and a voltage rating of 480V AC (UL/CSA) or 420V AC (IEC).
Key electrical specifications include a conditional short circuit capacity of 5 kA at 420V AC/65V DC (IEC) and 10 kA at 480V AC (UL). The breaker has a lifetime of 6000 switching cycles at 1x Ir and a dielectric strength of over 2 kV at 50 Hz.
Environmental and mechanical features include an IP40 degree of protection from the front, an operating temperature range of -10°C to 55°C, and a weight between 100-130g. It supports wire cross-sections from 1.5 to 25 mm² (16-4 AWG).
This circuit breaker is suitable for industrial appliance applications and mounts via DIN rail. It is designed according to standards such as IEC 60934 and UL508.
| Qty | Low | High |
|---|---|---|
| 1+ | $0.99 | $0.99 |
Estimated market price range - modelled values for guidance only, not live distributor offers.
The rated current is 8A.
The AC voltage rating is 480 V for UL/CSA and 420 V for IEC.
The DC voltage rating is 65 V.
It has 2 poles.
It uses DIN Rail mounting.
The operating temperature range is -10°C to 55°C.
The degree of protection from the front side is IP40.