Siemens QR23B200 3 Pole 200 Amp 240V Circuit Breaker

Siemens QR23B200 is a 200 Amp, 3‑pole molded‑case circuit breaker in the QR family, designed for 240V AC service. It employs a thermal‑magnetic trip unit that provides coordinated long‑time and instantaneous protection for all three phases, with a 10 kA interrupting rating at 240V. The unit uses bolt‑on mounting and is intended for use in compatible Siemens low‑voltage distribution panels that accept QR frame breakers, delivering reliable three‑phase protection for equipment such as motors and compressors in commercial or light industrial installations. As a general‑purpose breaker, the QR23B200 protects three conductors simultaneously, enabling safe disconnection across the entire 3‑phase circuit on fault conditions. The QR series is known for compact molded‑case construction and straightforward replacement in existing Siemens installations, offering a documented 200A rating at 240V and is widely used in applications requiring strong short‑circuit protection without sacrificing control of upstream devices.