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This Siemens SENTRON 5SJ4 series miniature circuit breaker (MCB) is designed for reliable circuit protection in industrial and mechanical engineering applications. It features a 2-pole configuration, a D-type tripping characteristic, and an operational current rating of 15A at 30°C, with derated values at higher temperatures.
The device offers a high switching capacity of 10kA according to EN 60898 and 15kA according to IEC 60947-2. It operates with AC/DC voltage and has an insulation voltage of 440V AC. The circuit breaker is suitable for a supply voltage of 400V AC and has specific operating voltage limits for UL and CSA standards.
Constructed for durability, it boasts a mechanical service life of 10,000 switching cycles. The protection class is IP20 with connected conductors and IP40 in the handle range. It supports conductor cross-sections from 0.75 mm² to 25 mm² with a maximum tightening torque of 3.5 N·m.
Key features include touch protection, sealability, and halogen-free construction. The unit is designed for mounting on a standard DIN rail, with dimensions of 121mm height, 36mm width, and 70mm depth, occupying 2 modular width units. It is suitable for environment B regarding EMC.
The rated supply voltage is 400V AC at 50 Hz. The maximum operating voltage is 277V AC per UL 489 and CSA C22.2 No. 5-02. For DC, the maximum is 60V (single channel) or 125V (2-channel).
The tripping characteristic is D.
The mechanical service life is 10,000 switching cycles.
The protection class is IP20 with connected conductors and IP40 in the handle range.
It is approved by CCC, CE, CSA, EAC, UL, and VDE.
Yes, the product is halogen-free.
The switching capacity is 10kA according to EN 60898 and 15kA according to IEC 60947-2.