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This Siemens 5SJ42187HG41 is a miniature circuit breaker (MCB) from the 5SJ4 series, featuring a 2-pole configuration suitable for AC and DC circuits. It is rated for a maximum operating voltage of 240V AC according to UL 489 and CSA C22.2 No. 5-02, and can handle a supply voltage of 400V AC at 50 Hz. The breaker has a current rating of 15A and a short-circuit breaking capacity of 10 kA according to EN 60898 and 15 kA according to IEC 60947-2.
Designed for industrial and mechanical engineering applications, this MCB has a C-trip characteristic and a mechanical service life of 10,000 switching cycles. It features touch protection and combined terminals for both top and bottom connections. The unit is halogen-free and sealable, with a protection class of IP20 with connected conductors and IP40 in the handle range. Its dimensions are 110 mm in height, 36 mm in width, and 70 mm in depth, with an installation depth of 70 mm. It mounts on a standard DIN rail.
The breaker is suitable for environment B regarding EMC. It supports connectable conductor cross-sections from 0.75 mm² to 25 mm² with core end processing, and has a maximum tightening torque of 3.5 N·m for screw-type terminals.
The tripping characteristic is C-curve.
The rated operational current is 15A at 30-40°C.
It has 10kA per EN 60898, 15kA per IEC 60947-2, and 14kA per UL 1077.
240V AC (UL), 400V AC (IEC), and up to 60V DC (single channel) or 125V DC (2-channel).
It mounts on a standard DIN rail.
The mechanical service life is 10,000 switching cycles.
Overvoltage category III and pollution degree 3.