Establishments primarily engaged in manufacturing switchgear and switchboard apparatus. Important products of this industry include power switches, circuit breakers, power switching equipment, and similar switchgear for general industrial application; switchboards and cubicles, control and metering panels, fuses and fuse mountings, and similar switchboard apparatus and supplies. Establishments primarily engaged in manufacturing relays are classified in Industry 3625. Establishments manufacturing switches other than switchgear type are classified in Industry 3625 if the switches are of the type used as industrial controls, in Industry 3679 if the switches are of the type used in electronic devices, and in Industry 3643 if the switches are of other types used in wiring circuits.

• Air circuit breakers
• Bus bar structures
• Circuit breakers, power
• Control panels, electric power distribution
• Cubicles (electric switchboard equipment)
• Distribution boards, electric
• Distribution cutouts
• Fuse clips and blocks, electric
• Fuse devices, power: 600 volts and over
• Fuse mountings, electric power
• Fuses, electric
• Generator control and metering panels
• Knife switches, electric
• Metering panels, electric
• Panelboards and distribution boards, electric
• Panels, electric control and metering
• Power connectors
• Power switching equipment
• Regulators, power
• Switchboards and parts, power
• Switches, electric power: except snap, push button, tumbler, and
• Switchgear and switchgear accessories
• Time switches, electrical switchgear apparatus