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The Siemens 5SJ4110-7HG42 is a single-pole miniature circuit breaker from the 5SJ4 series, designed for reliable circuit protection. It offers a rated operational current of 10A at 30°C and a switching capacity of 10kA according to EN 60898, and 15kA according to IEC 60947-2.
This circuit breaker features a C-trip characteristic, making it suitable for applications where inrush currents are moderate. It operates with a supply voltage of 400V AC and has an insulation voltage (Ui) of 440V AC. The device is designed for DIN rail mounting and has a compact width of 18mm, corresponding to one modular width unit.
Additional features include a mechanical service life of 10,000 switching cycles, halogen-free construction, and touch protection. The terminals accommodate conductor cross-sections from 0.75 mm² to 25 mm² with a maximum tightening torque of 3.5 N·m. It is suitable for operation in industrial environments and meets overvoltage category 3 and degree of pollution 3 standards.
The operational current rating is 10 A at 30°C and 40°C.
The switching capacity is 10 kA according to EN 60898 and 15 kA according to IEC 60947-2.
The tripping characteristic is Class C.
The maximum AC operating voltage according to UL 489 and CSA C22.2 No. 5-02 is 277 V.
The typical mechanical service life is 10,000 switching cycles.
Connectable conductor cross-section ranges from a minimum of 0.75 mm² to a maximum of 25 mm² with core end processing.
The protection class is IP20 with connected conductors and IP 40 in the handle range.