What is a wall-mounted electrical distribution cabinet that contains overcurrent protection devices called?

A wall-mounted electrical distribution cabinet that houses overcurrent protection devices is referred to as a panel board. This terminology encompasses various types of electrical distribution systems that provide a centralized location for managing electrical circuits. A panel board typically contains circuit breakers or fuses that protect electrical wiring by interrupting the circuit if an overload or fault occurs, thereby preventing potential fire hazards and equipment damage.

The term "panel board" is used to describe this component because it facilitates the connection of multiple circuits in a single enclosure, allowing for organized and efficient distribution of electrical power throughout a building. Additionally, panel boards can accommodate different circuit breakers and accessories suited for the specific electrical needs of residential or light commercial applications.

In contrast, while a "fuse box" and "breaker panel" are related concepts, they often refer to older or more specific types of panel boards. A "control panel," on the other hand, serves a different function, typically involving operational controls rather than solely electrical distribution or overload protection.