Siemens 5SX23 Safety Relay

Siemens 5SX23 is a three-pole molded‑case circuit breaker from the 5SX2 family, providing overcurrent protection for three‑phase circuits in electrical panels and distribution boards. The 5SX23 designation encompasses a range of current ratings and trip characteristics; a common variant is C10, indicating a 10 A rated current with a C‑type trip curve, suitable for motor and general distribution loads. Trip curves available for this series include B, C, and D, enabling selection to match fault behavior and nuisance‑trip tolerance for different applications. The device supports nominal currents from 1 A up to 32 A depending on the exact part number, and is designed to interrupt fault currents to safeguard conductors and equipment. Typical applications include protection of feeders to machines, control cabinets, and other three‑phase circuits in industrial environments where compact protection devices are preferred. As part of Siemens’ protection component lineup, the 5SX2 family emphasizes reliable magnetic‑thermal tripping in a compact form factor, enabling coordinated protection schemes with upstream devices and other Siemens protection products.