Siemens TC1Q250 Three-Phase Molded Case Circuit Breaker

Siemens TC1Q250 is a three-pole molded‑case circuit breaker in the QJ family, designed for 240 VAC three‑phase distribution and protection of motors and power circuits. It covers ampere ratings from 60 to 225 A, and is commonly used up to 225 A in panels that accept QJ2/QJH2/QJ2H frames, with copper termination using lug connections sized for up to 250 kcmil conductors. The TC1Q250 configuration supports lugged, field-installable terminations, enabling secure, code‑compliant wiring in industrial control panels and commercial electrical distribution systems. Its three‑pole construction ensures simultaneous disconnection of all phases on fault, helping protect equipment and maintain system safety, while its compact molded‑case design integrates into standard Siemens MCCB enclosures and panelboards that accept QJ family breakers.