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This Siemens 5SJ4 miniature circuit breaker, part number 5SJ4225-7HG42, is a 2-pole device designed for reliable circuit protection in industrial and mechanical engineering applications. It offers a rated operational current of 25A at AC and a switching capacity of 10kA according to EN 60898 standards.
The breaker features a C-curve tripping characteristic, suitable for protecting circuits with moderate inrush currents. It operates with a supply voltage of 400V AC and has an insulation voltage of 440V AC. The device is designed for DIN rail mounting and has a compact width of 36mm, occupying 2 modular width units.
Additional features include halogen-free and silicon-free construction, touch protection, and the ability to install supplementary devices. The terminals are suitable for conductor cross-sections from 0.75 mm² to 25 mm² with core end processing, and a maximum tightening torque of 3.5 N·m.
With a mechanical service life of 10,000 switching cycles, this circuit breaker is built for durability. It meets IP20 protection class with connected conductors and IP40 in the handle range.
| Qty | Low | High |
|---|---|---|
| 1+ | $0.99 | $0.99 |
Estimated market price range - modelled values for guidance only, not live distributor offers.
The operational current rating is 25A at AC, with values varying slightly based on ambient temperature from 22.5A at 60°C to 25A at 30°C and 40°C.
The switching capacity is 10 kA according to EN 60898 and 15 kA according to IEC 60947-2.
The tripping characteristic class is C.
The rated supply voltage at AC is 400V, and it is suitable for operating voltages up to 277V AC according to UL 489 and CSA C22.2 No. 5-02.
It is designed for mounting on a standard DIN rail.
Yes, the product feature indicates it is halogen-free.