Square D Q1340 – 40A 3 Pole Molded Case Circuit Breaker Trending

Part of the legacy Q1 series, the Square D Q1340 offers reliable thermal-magnetic protection for commercial environments. This 40A, three-pole breaker ensures consistent performance across demanding electrical systems. Designed for plug-on installation, it fits into older Square D Q1 panelboards. Facilities looking to modernize can use the QO340 as a substitute for this frame. With a 10 kAIC rating at 240VAC, it includes the Visi-Trip indicator and is HACR rated for HVAC equipment.