5SJ4320-8HG42
Siemens
The Siemens 5SJ4320-8HG42 is a 3-pole miniature circuit breaker with a 20A operational current and 10kA switching capacity. It features DIN rail mounting.
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This Siemens 5SJ4320-7HG42 is a 3-pole miniature circuit breaker from the 5SJ4 series, designed for robust protection in industrial and mechanical engineering applications. It features a C-curve tripping characteristic, providing reliable overcurrent and short-circuit protection with a rated switching capacity of 10 kA according to EN 60898 and 15 kA according to IEC 60947-2.
The breaker operates with a rated supply voltage of 400V AC and is suitable for DC applications up to 60V per channel. It has an operational current rating of 20A at 30°C and 40°C, with derating at higher temperatures. The unit is built for durability with a typical mechanical service life of 10,000 switching cycles.
Designed for ease of installation, it mounts on a standard DIN rail and features combined terminals for both top and bottom connections. The breaker offers touch protection and is sealable for added security. Its dimensions are 121mm in height, 54mm in width, and 70mm in depth, with an installation depth of 70mm, occupying 3 modular width units.
Environmental considerations include halogen-free and silicon-free construction. The protection class is IP20 with connected conductors and IP40 in the handle range. It is suitable for Environment B regarding EMC.
The operational current rating is 20A at 30°C and 40°C.
The rated supply voltage at AC is 400V.
This circuit breaker has 3 poles.
The switching capacity is 10 kA according to EN 60898 and 15 kA according to IEC 60947-2.
The tripping characteristic class is C.
Yes, the product feature indicates it is halogen-free.