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Siemens 5SJ4203-7HG42 is a 2-pole miniature circuit breaker rated 3 A, designed for branch circuit protection on DIN-rail systems. The device features a Class C thermal-magnetic trip characteristic, a 400 V voltage rating, and a 14 kA interrupt capacity. It uses identical wire screw connections for line and load, has a thermoplastic enclosure, and complies with multiple international standards for industrial electrical protection.
2-pole 3 A DIN-rail MCB, Class C trip, 14 kA interrupt rating, thermoplastic construction
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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