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This Siemens 5SJ4218-7HG42 is a 2-pole miniature circuit breaker designed for industrial and mechanical engineering applications. It offers a rated operational current of 15A at 30°C and 40°C, with a maximum switching capacity of 10kA according to EN 60898 and 15kA according to IEC 60947-2.
The circuit breaker operates with a C-curve tripping characteristic, suitable for protecting circuits against overloads and short circuits. It has an insulation voltage of 440V AC and a rated supply voltage of 400V AC. The device is designed for DIN rail mounting and features combined terminals for both top and bottom connections.
Key features include halogen-free construction, sealability, and touch protection. The mechanical service life is rated for a typical 10,000 switching cycles. Its dimensions are 121mm in height, 36mm in width, and 70mm in depth, with an installation depth of 70mm, occupying 2 modular width units.
This component is suitable for environments requiring immunity to interference, rated for Environment B. It complies with various standards including UL 489, CSA C22.2 No. 5-02, EN 60898, and IEC 60947-2, and carries CCC, CE, CSA, UL, and VDE approvals.
C curve.
121 mm height, 36 mm width, 70 mm depth.
10 kA per EN 60898, 15 kA per IEC 60947-2, and 10 kA per UL 1077.
2 poles.
DIN rail mounting, any position.
IP20 with connected conductors, IP40 in the handle range.
333 g.