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This Siemens 5SJ4304-7HG42 is a 3-pole miniature circuit breaker designed for industrial and mechanical engineering applications. It features a C-curve tripping characteristic and an operational current rating of 4A at 30°C, with a maximum switching capacity of 10kA according to EN 60898 and 15kA according to IEC 60947-2.
The breaker operates with a rated supply voltage of 400V AC and has an insulation voltage of 440V AC. It supports a wide range of operating voltages, including up to 277V AC according to UL 489 and CSA C22.2 No. 5-02, and up to 125V DC in a 2-channel configuration.
Designed for DIN rail mounting, this circuit breaker has a compact design with dimensions of 121mm height, 54mm width, and 70mm depth, occupying 3 modular width units. It includes features such as touch protection, combined terminals top and bottom, and is sealable. The device is also halogen-free and silicon-free, contributing to environmental considerations.
Connections can be made using finely stranded conductors with core end processing, ranging from 0.75 mm² to 25 mm², with a maximum tightening torque of 3.5 N·m. The breaker is suitable for environments with a degree of pollution 3 and overvoltage category 3.
| Qty | Low | High |
|---|---|---|
| 1+ | $0.99 | $0.99 |
Estimated market price range - modelled values for guidance only, not live distributor offers.
The Siemens 5SJ4304-7HG42 has 3 poles.
The tripping characteristic class is C.
The operational current rating at 30°C is 4A.
The switching capacity current according to EN 60898 is 10 kA.
The rated supply voltage at AC is 400 V.
The protection class is IP20, with connected conductors, and IP 40 in the handle range.
The mounting type is DIN Rail.