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The Siemens 5SJ4301-7HG42 is a 3-pole miniature circuit breaker from the 5SJ4 series, designed for reliable circuit protection. It features a C-curve tripping characteristic and a rated current of 1A, suitable for various industrial and mechanical engineering applications.
This circuit breaker has a mechanical service life of 10,000 switching cycles and a switching capacity of 10kA according to EN 60898 and 15kA according to IEC 60947-2. It operates with a rated supply voltage of 400V AC and is UL 489 listed for operation up to 480/277V AC. The device offers protection class IP20 with connected conductors and IP40 in the handle range.
Designed for DIN rail mounting, the 5SJ4301-7HG42 has a compact width of 54mm, corresponding to 3 modular width units. It is halogen-free and sealable, with combined terminals available at both the top and bottom for flexible connections. The tightening torque for screw terminals is a maximum of 3.5 N·m.
The rated current is 1 A at 30 °C and 40 °C, with derating at higher temperatures (0.97 A at 45 °C, 0.9 A at 50-55 °C, 0.88 A at 60 °C).
It has 3 poles.
The tripping characteristic is C.
Switching capacity is 10 kA according to EN 60898 and 15 kA according to IEC 60947-2.
Rated supply voltage is 400 V AC at 50 Hz.
Dimensions: 121 mm (height) x 54 mm (width) x 70 mm (depth). Mounts on DIN rail with 3 modular width units.
Maximum operating voltage is 60 V DC for single channel, 125 V DC for 2-channel (per UL 489 and CSA C22.2 No. 5-02).
