Siemens QJ23B110 Molded Case Circuit Breaker

Siemens QJ23B110 is a 3-pole molded‑case circuit breaker from the QJ frame, rated for 110 A at 240 V, with a 10 kA short‑circuit interrupting rating. This bolt‑on unit provides thermal‑magnetic protection with long‑time and instantaneous trip functions and uses load‑side lug terminals for straightforward wiring. Designed for low‑voltage distribution panels, motor control centers, and feeders in commercial or light industrial installations, it supports both 50/60 Hz operation. The QJ23B110 is part of Siemens’ legacy ITE/QJ lineup and is typically mounted in 3‑phase panels where reliable overload and short‑circuit protection is required in a compact MCCB form factor.