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This Siemens 5SJ42208HG41 is a 2-pole miniature circuit breaker from the 5SJ4 series. It is rated for a maximum operating voltage of 240V AC and has a current rating of 20A at 30°C, with derating at higher temperatures. The circuit breaker offers a short circuit breaking capacity of 14kA according to UL 1077 and CSA C22.2 No.235, and 10kA according to EN 60898.
Designed for industrial and mechanical engineering applications, this breaker features a D-trip characteristic. It has a mechanical service life of 10,000 switching cycles and is built with touch protection. The unit is halogen-free and sealable.
Installation is facilitated by DIN rail mounting. The dimensions are 110mm in height, 36mm in width, and 70mm in depth, with an installation depth of 70mm. It accommodates finely stranded conductors with core end processing from 0.75mm² to 25mm², with a maximum tightening torque of 3.5 N·m.
The maximum operating voltage is 240 V AC (UL 489/CSA) and 60 V DC (single channel) or 125 V DC (2-channel).
It provides 10 kA according to EN 60898 and 15 kA according to IEC 60947-2. The short-circuit breaking capacity per UL 1077 is 14 kA at AC.
The rated current is 20 A at 30 °C and 40 °C. It is derated to 19.4 A at 45 °C, 19 A at 50 °C, 18.5 A at 55 °C, and 18 A at 60 °C.
The mechanical service life is 10,000 switching cycles.
It is mounted on a DIN rail.
With connected conductors it is IP20; in the handle range it is IP40.
Finely stranded conductors with core end processing from 0.75 mm² to 25 mm² can be connected, with a maximum tightening torque of 3.5 N·m.