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This Siemens SENTRON 5SJ4 miniature circuit breaker, part number 5SJ4108-8HG40, offers robust protection for electrical circuits. It is a 1-pole device with a tripping characteristic class D and a rated current of 8A, suitable for operation up to 400V AC.
The breaker boasts a switching capacity of 10 kA according to EN 60898 and 15 kA according to IEC 60947-2, ensuring safety under fault conditions. It is designed for DIN rail mounting, with dimensions of 90mm height, 18mm width, and 70mm depth, fitting standard 1-module width installations.
Additional features include touch protection, sealability, and the capability to install supplementary devices. The connection terminals accommodate finely stranded conductors with core end processing from 0.75 mm² to 25 mm², with a maximum tightening torque of 3.5 N·m.
Suitable for industrial and mechanical engineering applications, this circuit breaker operates within a standard temperature range and offers a mechanical service life of typically 10,000 switching cycles.
The rated current is 8A.
The rated voltage is 400V AC.
The switching capacity is 10 kA according to EN 60898.
It has 1 pole.
The tripping characteristic is Class D.
The dimensions are 90mm height, 18mm width, and 70mm depth.