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A fuse is an overcurrent protection device containing a calibrated current-carrying element that melts when too much current flows through it, thereby opening a circuit and stopping the flow of electricity.

Products include non-renewable plug fuses, non-renewable cartridge fuses (not exceeding 1,000 volts AC or 1,200 volts DC), renewable cartridge fuses and renewal links or elements (600 volts or less), fuse holders, and fuse blocks.

NEMA Members serve as the industry voice for positively affecting product safety and performance requirements related to fuses.


  • Develops and maintains technical Standards related to fuses
  • Provides input to code development and monitoring services for local and national codes
  • Works with the Council for Harmonization of Electrotechnical Standards of the Nations in the Americas (CANENA) to harmonize Standards between Canada, Mexico, and the United States.


  • Automobiles
  • Commercial HVAC and office equipment
  • Electronic devices
  • Power transformers
  • Residential electrical cabling


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