Siemens 5SJ4104-7HG41 Miniature Circuit Breaker

Siemens SENTRON 5SJ4104-7HG41 is a 1P miniature molded‑case circuit breaker rated for 4 A and 240 V AC, delivering up to 14 kA of short‑circuit breaking capacity for reliable protection of small‑load circuits. This 5SJ4‑series device features a thermal‑magnetic trip (Type C) with long‑time and instantaneous protection, and it mounts on a standard DIN rail with feed‑through terminals for easy integration in panelboards. Its compact enclosure measures 110 mm high, 18 mm wide, and 70 mm deep, and it weighs about 171 g; terminals accept Cu conductors from 0.75 to 25 mm² with a tightening torque up to 3.5 N·m. Operational temperature range is -25 to 55°C (max 95% humidity), and it conforms to IEC/EN 60947-2 and UL 489, ensuring compatibility with common low‑voltage distributions.