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This Siemens 5SJ4302-7HG42 is a 3-pole miniature circuit breaker designed for industrial and mechanical engineering applications. It features a rated current of 2A at 30°C, with a tripping characteristic class C. The breaker provides a switching capacity of 10kA according to EN 60898 and 15kA according to IEC 60947-2.
With an insulation voltage of 440V AC and a supply voltage of 400V AC, it is suitable for AC/DC operation. The device has a mechanical service life of typically 10,000 switching cycles. It is designed for DIN rail mounting and offers touch protection.
Key electrical specifications include an operating voltage of 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 power loss per pole at rated current in a hot operating state is 1.8W. The breaker is halogen-free and sealable.
Mechanical dimensions include a height of 121mm, width of 54mm, and depth of 70mm, with an installation depth of 70mm. It occupies 3 modular width units. The connection terminals accommodate finely stranded conductors with core end processing from 0.75mm² to 25mm², with a maximum tightening torque of 3.5 N·m.
The rated current is 2A at 30°C, 40°C, and AC.
This circuit breaker has 3 poles.
The switching capacity is 10kA according to EN 60898 and 15kA according to IEC 60947-2.
The tripping characteristic class is C.
The maximum AC operating voltage according to UL 489 and CSA C22.2 No. 5-02 is 277V.
The rated supply voltage frequency is 50 Hz.
Yes, this product feature is halogen-free.