Markdown Square D Q432400 – 400A 3 Pole Molded Case Circuit Breaker

Designed for high-capacity distribution, the Q432400 is a 400-amp, 3-pole molded case circuit breaker from Square D. It utilizes a proven thermal-magnetic trip unit to deliver long-time and instantaneous (LI) protection against overloads and short circuits. This Q4 frame breaker is built specifically for Square D I-Line panelboards, utilizing a plug-on line connection for efficient installation. It carries a 25kAIC rating at 240VAC and includes a push-to-trip button for manual testing.