What is an electrical panelboard?

Panelboards are used to safely distribute electricity throughout commercial and industrial facilities. A panelboard is a component of an electrical distribution system which divides an electrical power feed into branch circuits, while providing a protective circuit breaker or fuse for each circuit, in a common enclosure. A panelboard services to protect branch circuits from overloads and short circuits. Panelboards are designed to meet UL 67 and NEMA Standard PB1.