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This Siemens 5SJ4140-7HG40 is a 1-pole miniature circuit breaker designed for reliable circuit protection in industrial and mechanical engineering applications. It features a tripping characteristic class C and a rated operational current of 40A at AC. The breaker has a high switching capacity of 10 kA according to EN 60898 and 15 kA according to IEC 60947-2, with a short circuit breaking capacity of 14 kA.
With a voltage rating of 400V AC and suitable for operation up to 120V AC according to UL 489 and CSA C22.2 No. 5-02, this device ensures safety and performance. It is designed for DIN rail mounting, with dimensions of 90mm height, 18mm width, and 70mm depth, occupying 1 modular width unit. The breaker also includes features like touch protection and is halogen-free and silicon-free.
Additional technical data includes a mechanical service life of 10,000 switching cycles, an insulation voltage (Ui) of 440V AC, and a power loss of 4.8W per pole. It supports conductor cross-sections from 0.75 mm² to 25 mm² with a maximum tightening torque of 3.5 N·m.
The rated operational current is 40 A at 30 °C and 40 °C.
The tripping characteristic is C.
The switching capacity is 10 kA according to EN 60898 and 15 kA according to IEC 60947-2.
It is designed for DIN rail mounting.
The mechanical service life is 10,000 switching cycles.
The protection class is IP20, with connected conductors, and IP40 in the handle range.
Yes, the product is halogen-free.