Siemens FD63T175 Circuit Breaker Trip Unit Module

Siemens FD63T175 Trip Unit Module is the interchangeable trip unit designed for Siemens FD63 three‑pole molded‑case breakers in the FD6 Sentron family, rated 175 A at up to 600 V and built to be installed as a field replacement rather than replacing the entire breaker. Sold as a Trip Unit Only, it fits Type FD6‑A interchangeable trip units and can be installed into compatible FD63 frames without swapping the whole assembly. This 3‑pole module specifies 600 V operation with a 22 kA short‑circuit rating, aligning with standard FD63T175 specifications and enabling reliable short‑circuit protection for mid‑ to large‑scale commercial and light industrial electrical distributions.