Square D LA26400BC 400A 2-Pole 600V LA I-Line Circuit Breaker Phase BC
400A Frame | 400A | 2P | 42kA@240V, 30kA@480V, 22kA@600V | Thermal-Magnetic
The LA26400BC is a Square D LA-frame two-pole 400-ampere molded case circuit breaker from the Q4 Legacy product line by Schneider Electric. This I-Line plug-on breaker connects to Phase B and Phase C of the bus, providing targeted two-pole protection in three-phase I-Line panelboards and switchboards. Rated for 600 Vac / 250 Vdc with a 400A frame size, it delivers standard interrupting capacity of 42 kAIC at 240 Vac, 30 kAIC at 480 Vac, and 22 kAIC at 600 Vac. DC interrupting ratings are 10 kAIC at 125 Vdc and 10 kAIC at 250 Vdc. The thermal-magnetic trip unit provides LI (Long-Time and Instantaneous) protection with an adjustable magnetic trip range of 2000A to 3200A, allowing customization for specific load characteristics. The BC phase designation enables precise bus connection configuration in multi-phase distribution systems. Featuring plug-on I-Line mounting technology, the LA26400BC ensures quick installation and removal without de-energizing the entire panelboard. Wire connections accommodate (1) 1 AWG-600 kcmil or (2) 1 AWG-250 kcmil Al/Cu. The unit measures 11.0 x 4.0 x 5.84 in and weighs approximately 25 lbs. Manufactured to UL 489 and CSA C22.2 No. 5.1 standards, this breaker is engineered for industrial and commercial power distribution requiring reliable overcurrent protection with the convenience of I-Line plug-on connectivity.
Key Features
This PowerPact MCCB features Thermal-Magnetic trip protection rated 400A at 600 Vac / 250 Vdc. Frame size: 400A. Interrupting capacity: 42kA@240V, 30kA@480V, 22kA@600V. Designed for reliable overcurrent protection in industrial and commercial power distribution systems.
Applications
Suitable for main distribution panels, motor control centers, switchboards, and feeder circuit protection in industrial facilities, data centers, and commercial buildings. Compliant with UL 489, CSA C22.2 No. 5.1.
