Siemens 5SY4504-8 Molded Case Circuit Breaker

Siemens 5SY4504-8 Molded Case Circuit Breaker is a Siemens SENTRON 5SY4 single‑pole‑plus‑neutral device rated for 230 V AC, with a nominal current of 4 A and a short‑circuit breaking capacity of 10 kA. It is configured as a 1+N-pole unit and uses a Type D trip curve, providing protection for circuits that may experience moderate inrush. This 5SY4504-8 belongs to the 5SY4 family of molded‑case breakers and is designed for installation in low‑voltage distribution panels to guard individual branches in residential or light commercial electrical systems. With 230 V operation and a 4 A rating, it offers reliable overload and short‑circuit protection for circuits such as lighting and receptacle runs in compact distribution boards.