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This Siemens 5SJ4220-7HG42 is a 2-pole miniature circuit breaker designed for industrial and mechanical engineering applications. It features a 20A operational current rating at 30°C and a C-curve tripping characteristic, suitable for protecting electrical circuits against overloads and short circuits.
The breaker has a rated supply voltage of 400V AC and an insulation voltage (Ui) of 440V AC. Its switching capacity is 10kA according to EN 60898 and 15kA according to IEC 60947-2. The device is designed for DIN rail mounting and has a compact width of 36mm, occupying 2 modular width units.
Key features include touch protection, combined terminals, and halogen-free construction. It is suitable for operation in environment B regarding EMC. The mechanical service life is typically 10,000 switching cycles. The breaker is approved by CCC, CE, CSA, EAC, UL, and VDE.
The operational current rating at 30°C is 20A.
It has 2 poles.
The switching capacity is 10kA according to EN 60898 and 15kA according to IEC 60947-2.
The tripping characteristic class is C.
The rated supply voltage at AC is 400V, and the insulation voltage (Ui) at AC is 440V.
It is designed for DIN rail mounting.
Yes, it is halogen-free.