Siemens S04ED60 U 120A 480V 1 Electrical Contactor

Siemens S04ED60 U is a shunt-trip accessory for ED-frame molded-case circuit breakers, delivering remote tripping at 480 VAC. With a 120 A rating, it is designed to activate the breaker from a separate control source, enabling automatic or manual remote shutdown in process environments. The unit supports a maximum control voltage of 480 VAC, making it suitable for integration with standard industrial control circuits and safety interlocks. It is compatible with Siemens ED, HED, HHED, CED, EM6B, and EMKB frame molded-case breakers, allowing straightforward retrofits in existing installations. Typical applications include emergency-stop systems, remote fault isolation, and plant protection schemes where an actuator can trip the breaker when a monitored condition occurs. The S04ED60 U accessory preserves the primary protection function of the ED-series breaker while adding a dedicated, independent trip path, helping to meet safety and compliance requirements in electrical distribution panels and motor control centers.