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The Schurter Inc. 4420.0228 is a thermal magnetic circuit breaker designed for industrial appliance applications. This 1-pole breaker offers high short circuit performance and is suitable for both AC and DC applications within the same frame size.
Key electrical specifications include a rated current of 8A and a voltage rating of 277V AC (UL/CSA) or 65V DC. The breaker type is thermal magnetic, with a positively trip-free mechanism and manual ON/OFF actuation. It supports a permissible wire cross section of 1.5 - 25 mm².
Mounting is facilitated via DIN rail, making installation straightforward in various control panels and enclosures. The degree of protection from the front side is IP40. The product has a lifetime of 6000 switching cycles at 1x Ir and meets various approval standards including UL and IEC.
This part is phase-out, with the last order possibility on August 31, 2018, and the last delivery date on September 30, 2018.
The circuit breaker is rated 277V AC under UL/CSA, 240V AC under IEC, and 65V DC.
The operating ambient temperature range is -20°C to 60°C.
It is approved under CSA C22.2 No 14, CSA C22.2 No 235, EN 60934, GB 17701, IEC 60934, UL 1077, and UL 508.
The short circuit capacity is 5 kA at 240V AC/65V DC (IEC 60934), 10 kA at 277V AC with fuse (UL 1077), 10 kA at 125V AC without fuse, 5 kA at 277V AC without fuse (UL 1077), 2 kA at 65V DC without fuse, and 5 kA at 277V AC without fuse (UL 508).
The breaker is designed for DIN rail mounting.
The tripping mechanism is positively trip free.
The mechanical lifetime is 6000 switching cycles at 1x rated current.