Schneider Electric QOU245 U 2-Pole Circuit Breaker

Schneider Electric's QOU245 U is a bolt-on, two-pole miniature circuit breaker designed for 120/240 V electrical systems and rated for 45 A. It belongs to the QOU family and provides thermal-magnetic protection with a 10,000 A short-circuit interrupting capacity at 240 V, enabling reliable protection for branch circuits against overloads and faults. The unit mounts in compatible panels via a bolt-on method, offering a secure alternative to plug-in breakers when back‑plate mounting is required. With a 2-pole design, it protects two conductors simultaneously, well suited for 240 V circuits and multi-wire branch circuits in residential or light commercial installations. The QOU245 U delivers coordinated trip actions, including a long-time response to overloads and an instantaneous trip for short circuits, helping prevent conductor damage and equipment failure. Typical applications include protecting individual branch circuits in 120/240 V panelboards or feeders that require 240 V supply in homes and small businesses.