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The Siemens 5SJ4303-7HG41 is a miniature circuit breaker from the 5SJ4 series, designed for reliable circuit protection in industrial and mechanical engineering applications. This 3-pole device operates with a C tripping characteristic and is rated for a maximum AC operating voltage of 240V according to UL 489 and CSA C22.2 No. 5-02, and a rated supply voltage of 400V AC at 50 Hz.
Key electrical specifications include a rated current of 3A at 30°C, a switching capacity of 10 kA according to EN 60898, and a short circuit breaking capacity of 14 kA according to UL 1077. The breaker also supports DC operation up to 60V per channel or 125V for 2-channel configurations.
Mechanically, the 5SJ4303-7HG41 features a DIN rail mounting type, with dimensions of 110mm height, 54mm width, and 70mm depth. It has a mechanical service life of typically 10,000 switching cycles. The terminals accommodate conductor cross-sections from 0.75 mm² to 25 mm² with a maximum tightening torque of 3.5 N·m.
Environmental considerations include an IP20 protection class with connected conductors and IP40 in the handle range. It is suitable for environment B regarding EMC. The product is halogen-free and sealable.
| Qty | Low | High |
|---|---|---|
| 1+ | $0.99 | $0.99 |
Estimated market price range - modelled values for guidance only, not live distributor offers.
The operational current rating is 3A at 30°C and 40°C, decreasing slightly at higher temperatures.
The maximum AC operating voltage is 240V according to UL 489 and CSA C22.2 No. 5-02.
The short circuit breaking capacity is 14 kA at AC according to UL 1077 and CSA C22.2 No.235.
This circuit breaker has 3 poles.
The tripping characteristic class is C.
It uses DIN Rail mounting.
