27.12 — Manufacture of Electricity Distribution and Control Apparatus

This class includes: - manufacture of power circuit breakers - manufacture of surge suppressors (for distribution-level voltage) - manufacture of control panels for electric power distribution - manufacture of electrical relays - manufacture of duct for electrical switchboard apparatus - manufacture of electric fuses - manufacture of power switching equipment - manufacture of electric power switches (except push-button, snap, solenoid, tumbler)

This class excludes: - manufacture of environmental controls and industrial process control instruments, see 26.51 - manufacture of motor generator sets (except turbine generator sets), see 27.11 - manufacture of switches for electrical circuits (e.g. push-button and snap switches), see 27.33