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The Siemens 5SJ4202-7HG42 is a 2-pole miniature circuit breaker from the 5SJ4 series, designed for reliable circuit protection in industrial and mechanical engineering applications.
This circuit breaker features a tripping characteristic class C and a rated operational current of 2A at 30°C, with a maximum switching capacity of 10kA according to EN 60898 and 15kA according to IEC 60947-2. It supports a rated supply voltage of 400V AC and has an insulation voltage of 440V AC. The device operates with a supply voltage frequency of 50 Hz and offers protection class IP20 with connected conductors.
Designed for mechanical engineering and industrial use, the 5SJ4202-7HG42 is built for durability with a typical mechanical service life of 10,000 switching cycles. It is suitable for environment B regarding EMC. The breaker has a compact design with dimensions of 121mm height, 36mm width, and 70mm depth, occupying 2 modular width units. It is designed for DIN rail mounting, making installation straightforward.
Additional features include touch protection and the ability to be sealed. The breaker is halogen-free and silicon-free. It is compatible with conductor cross-sections from 0.75 mm² to 25 mm² for finely stranded conductors with core end processing, and has a maximum tightening torque of 3.5 N·m for screw-type terminals.
The rated operational current at 30°C is 2A.
The switching capacity is 10 kA according to EN 60898 and 15 kA according to IEC 60947-2.
The rated supply voltage is 400V AC, and the insulation voltage is 440V AC.
It is designed for DIN rail mounting.
The RoHS status is RoHS3 Compliant.
The degree of pollution is 3.