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The Siemens 5SJ4220-8HG42 is a 2-pole miniature circuit breaker designed for industrial and mechanical engineering applications. It features a D-trip characteristic and a rated operational current of 20A at 30°C and 40°C, with a slight derating at higher temperatures.
This circuit breaker has a high switching capacity of 10kA according to EN 60898 and 15kA according to IEC 60947-2. It is suitable for AC/DC operation with a rated insulation voltage of 440V AC and a supply voltage of 400V AC. The operating voltage is rated up to 277V AC according to UL 489 and CSA C22.2 No. 5-02, and up to 125V DC in a 2-channel configuration.
Designed for DIN rail mounting, the 5SJ4220-8HG42 has a compact width of 36mm, corresponding to 2 modular width units. It features combined terminals for both top and bottom connections and is halogen-free and silicon-free. The mechanical service life is typically 10,000 switching cycles.
2 poles.
D characteristic.
20 A.
10 kA according to EN 60898 and 15 kA according to IEC 60947-2.
10,000 switching cycles.
On standard DIN rail.
Rated supply voltage 400 V AC, maximum operating voltage 277 V AC (UL 489), and up to 60 V DC (single channel) or 125 V DC (2-channel).