Flash Sale Square D Q1B290 – 90A 2 Pole Molded Case Circuit Breaker

Engineered to fit older NQOB panelboards, the Q1B290 is a 90A, 2-pole molded case circuit breaker. It utilizes reliable thermal-magnetic trip technology to deliver long-time and instantaneous protection for commercial electrical systems. The breaker installs via a sturdy bolt-on connection. When upgrading or replacing, a modern QOB290 breaker can be utilized if paired with the SK5668 horizontal bus bar mounting kit.