S5-8

The S5-8 is an ABB SACE Isomax shunt trip designed to trip S5N, S5H, and S5L molded case circuit breakers remotely. When a V control signal is applied to the shunt trip, it opens the breaker, which lets operators, control systems, or safety circuits disconnect a circuit from a distance, such as from an emergency stop, a fire alarm panel, or a protection relay. The S5-8 is a field accessory for the SACE Isomax S5 breaker family, so a standard breaker can be upgraded with remote tripping without replacing it. A shunt trip adds control and safety capabilities to a breaker without changing its overload and short-circuit protection, which still work as before. It is typically installed inside the breaker’s accessory compartment, so it does not take up extra panel space. Because ABB builds shunt trips in several control voltages and for several breaker frames, it is worth confirming that the voltage and frame match your breaker before ordering. This makes the S5-8 a practical choice for electricians and maintenance teams who need to add remote trip capability to an ABB SACE Isomax S5 breaker or replace a failed shunt trip and keep a system safe. Purchase the S5-8 at Electrical.com, your reliable partner for industrial and commercial electrical products. Our selection includes trusted circuit breakers, breaker accessories, and electrical products from manufacturers like ABB, Siemens, Eaton, Square D, and General Electric, backed by a knowledgeable sales team ready to assist with technical questions, product selection, and support.