Siemens HEG2B040L NS Molded Case Circuit Breaker

Siemens HEG2B040L NS is a 2-pole molded-case circuit breaker rated for 40 A at up to 480 V, designed to protect two-hot-leg feeders in commercial and light-industrial power-distribution panels. This NS-configured unit is part of Siemens’ HEG family, offering compact, durable overcurrent protection for 480 V circuits while fitting standard HEG2B-series mounting footprints. With its two-pole design, it provides protection for both conductors in a 480 V feed, helping keep wiring organized and panels neatly arranged in facilities that rely on 480 V service. Constructed for use in standard low-voltage distribution equipment, it integrates with common wiring methods and labeling conventions used by Siemens, making field replacement straightforward in compatible panels. Typical applications include feeders to motors, compressors, HVAC equipment, lighting, and other branch circuits inside commercial and light-industrial installations where a 40 A device is specified for 480 V operation. By pairing this 40 A protection device with Siemens’ enclosure and bus systems, technicians can maintain consistent protection schemes across a site while preserving compatibility with existing HEG2B040L NS installations and spare-parts inventories.