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This Siemens 5SJ4101-8HG42 is a 1-pole miniature circuit breaker designed for reliable circuit protection in industrial and mechanical engineering applications. It operates with a rated current of 1A and offers a switching capacity of 10kA according to EN 60898.
The breaker features a D-trip characteristic, providing protection against overcurrents and short circuits. It is suitable for AC/DC operation with a maximum operating voltage of 277V AC according to UL 489 and CSA C22.2 No. 5-02, and 60V DC.
Designed for convenience, it mounts on a standard DIN rail and has a compact width of 18mm, corresponding to 1 modular width unit. The breaker is halogen-free and silicon-free, contributing to environmental safety. It also includes touch protection for enhanced user safety.
Key electrical specifications include an insulation voltage of 440V AC and a supply voltage frequency of 50 Hz. The power loss per pole in a hot operating state is 1.5W. The terminals are suitable for conductor cross-sections ranging from 0.75 mm² to 25 mm² with core end processing, and have a maximum tightening torque of 3.5 N·m.
The rated operational current is 1 A at 30 °C and 40 °C.
It has a D tripping characteristic.
The switching capacity is 10 kA according to EN 60898 and 15 kA according to IEC 60947-2.
The rated supply voltage is 400 V AC. For UL 489 and CSA C22.2 No. 5-02, the maximum operating voltage is 277 V AC.
The mechanical service life is 10,000 switching cycles.
The protection class is IP20, with IP40 in the handle range when conductors are connected.
It holds approvals including CCC, CE, EAC, UL 489, and VDE.