Siemens Circuit Breaker Panels

To reset a tripped Siemens breaker, first identify the tripped breaker — it will be in the middle or 'trip' position between ON and OFF. Turn it fully to the OFF position, then firmly push it back to the ON position. If it trips again immediately, there may be an overload, short circuit, or ground fault on that circuit. Consult a licensed electrician before resetting repeatedly.

DEI Power offers Siemens circuit breaker panels and power distribution equipment ranging from 400A up to 4000A. Options include panelboards, switchboards, switchgear, service entrance switchgear, SES sections, meter mains, and remote power panels, available in multiple voltage configurations from 120/240V up to 480Y/277V to suit commercial, industrial, and utility applications.

A panelboard is a wall-mounted assembly used for branch circuit distribution in commercial and industrial buildings. A switchboard is a larger, freestanding assembly for higher amperage distribution — typically 400A to 4000A. Switchgear offers the highest protection level with individually enclosed breakers, used in utility, industrial, and critical-power environments where fault interruption and safety are paramount.

Yes. All panels supplied by DEI Power are UL 891 certified, EUSERC approved, and meet UBC, CBC, and IBC requirements for all seismic zones. DEI Power is a Siemens-approved OEM, meaning all assemblies are built with genuine Siemens components to factory specifications, ensuring full code compliance for commercial, industrial, and utility electrical applications.

Siemens circuit breaker panels from DEI Power are available in NEMA 1 enclosures for indoor installations and NEMA 3R enclosures for outdoor or weather-exposed applications. NEMA 3R provides protection against rain, sleet, and ice, making it suitable for utility service entrances, rooftop installations, and outdoor switchgear locations.

DEI Power ships most in-stock orders within 1 business day from their 50,000 sq. ft. facility in Ontario, California, with standard delivery in 3–5 business days. Free shipping is included on all orders. Built-to-order or custom configurations typically have 4–6 week lead times. Rush and emergency replacement orders are supported for critical deployment situations.