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