ABB S804U-PVS5 Industrial Safety Relay Module

ABB S804U-PVS5 is a four‑pole, high‑performance circuit breaker with cage terminals designed for photovoltaic (PV) applications. The PV version (S804U-PVS5) carries a nominal current rating of 5 A and is configured as a four‑pole device to protect multiple conductors within an electrical panel. It is listed to UL489B, reflecting ABB’s compliance for safety and overcurrent protection in PV distribution environments. The cage‑terminal connections provide secure, tool‑free termination suitable for dense wiring in industrial and solar installations. This model is part of ABB’s S804U family, offering reliable protection for PV distribution boards, inverters, and related equipment where coordinated, multi‑pole tripping is required. Common applications include PV system protection in electrical distribution panels, where each pole safeguards a separate conductor or string, enabling compact, four‑pole protection with a 5 A rating and straightforward integration into ABB‑based protection schemes. The S804U-PVS5 combines robust protection, simple wiring, and compatibility with ABB’s modular protection ecosystem, making it a concrete choice for PV and general electrical distribution assemblies that demand precise, multi‑pole overcurrent protection.