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This Siemens 5SJ4 miniature circuit breaker, part number 5SJ4205-8HG41, is a 2-pole device designed for AC applications up to 240V. It offers a rated operational current of 0.5A and a significant short-circuit breaking capacity of 14kA according to UL 1077 and CSA C22.2 No.235.
The breaker features a D-trip characteristic, suitable for applications with high inrush currents. It is designed for DIN rail mounting, with a width of 36mm (2 modular units) and a depth of 70mm. The device is also halogen-free and sealable.
With an insulation voltage of 440V AC and a supply voltage frequency of 50Hz, this circuit breaker is suitable for industrial and mechanical engineering applications. It meets various approval standards including CCC, CE, EAC, UL489, and VDE.
The operating voltage is 240V AC maximum according to UL 489 and CSA C22.2 No. 5-02. For DC operation, the maximum is 60V for single-channel and 125V for 2-channel.
The MCB mounts on a standard DIN rail and can be installed in any position. Dimensions: height 110mm, width 36mm (2 modular units), depth 70mm. Protection class is IP20 with connected conductors, IP40 in the handle range.
The tripping characteristic is D, designed for high inrush current applications.
The breaking capacity is 10kA according to EN 60898, 15kA according to IEC 60947-2, and 14kA according to UL 1077.
It is approved by CCC, CE, EAC, UL 489, and VDE.
The rated current is 0.5A at 30°C and 40°C. Derating applies at higher temperatures: 0.48A at 45°C, 0.46A at 50°C, 0.44A at 55°C, and 0.42A at 60°C.
The power loss is 1.2W per pole at rated current in AC hot operating state.