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The Siemens 5SJ4208-8HG42 is a 2-pole miniature circuit breaker from the 5SJ4 series, designed for robust performance in industrial and mechanical engineering environments. This breaker operates with a rated current of 8A and offers a switching capacity of 10kA according to EN 60898 standards, and 15kA according to IEC 60947-2.
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. The breaker is built with a D-tripping characteristic and features touch protection for enhanced safety. Its mechanical service life is rated for a typical 10,000 switching cycles.
Designed for easy installation, the 5SJ4208-8HG42 mounts on a standard DIN rail and has a width of 36mm, occupying 2 modular units. It accommodates conductor cross-sections from 0.75mm² to 25mm² with core end processing, and requires a tightening torque of 3.5 N·m for its screw-type terminals. The unit is halogen-free and sealable, making it suitable for various demanding applications.
The operational current rating is 8A at 30°C and 40°C.
The switching capacity is 10kA according to EN 60898 and 15kA according to IEC 60947-2.
This circuit breaker has 2 poles.
The tripping characteristic class is D.
The maximum AC operating voltage according to UL 489 and CSA C22.2 No. 5-02 is 277V.
It is mounted on a standard DIN rail.
Yes, the product is halogen-free.