Westinghouse HLB2400TM Magnetic Circuit Breaker

The Westinghouse HLB2400TM Magnetic Circuit Breaker delivers magnetic overcurrent and short‑circuit protection for high‑capacity power circuits in industrial electrical distribution systems. This 2‑pole, 400 A, 600 V AC magnetic‑only breaker (LB/HLB) mounts in panels and switchgear and features a magnetic trip range of 2000–4000 A. It is commonly installed in switchgear assemblies, motor control centers, and commercial electrical panels for reliable instantaneous fault interruption in commercial and industrial infrastructure. Suitable for manufacturing facilities, utility distribution systems, industrial automation equipment, and other power‑critical environments where 400 A magnetic‑only protection is essential for safety and continuity. Common replacements include Eaton HLB2400TM, Cutler-Hammer HLB2400TM, and Westinghouse HLD2400T.