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Circuit Interrupter (AFCI)
Eaton’s FIRE-GUARD Arc Fault Circuit Interrupter (AFCI) is a residential circuit breaker that incorporates advanced Electronic Technology which recognizes the unique current and/or voltage sig-natures associated with arcing faults, and acts to interrupt the circuit to reduce the likelihood of an electrical fire.

With the Cutler-Hammer FIRE-GUARD AFCI, protection from arcing faults is combined with the protection afforded by standard residential circuit break-ers. The FIRE-GUARD AFCI protects against arcing directly as well as responding to overcurrents by conven-tional thermal and magnetic trips.

FIRE-GUARD AFCI can also be equipped with 5 mA ground fault personnel pro-tection, providing a residential circuit breaker that protects against arcing faults, thermal overloads and short circuits, and in addition, 5 mA ground fault protection in one integrated design.

Eaton Corporation has the widest selection of AFCI product solutions on the market today.

Application Description

Fire Prevention

The AFCI product is a rare fire safety product in that it is pro-active and not re-active by nature. Most fire safety products such as smoke detectors, fire extinguishers, escape ladders, oxygen bottles and the like expect that a fire has already started and will be used to safely exit or mitigate the problem. The AFCI product is pro-active in that it detects a problem that can cause fires and works to mitigate the problem before the fire begins.

Household electrical problems caused more than 67,000 fires and more than $800 million in property losses in 2003. Electrical fires cause an estimated 485 deaths annually and injure almost 2,300 more. Electrical fires can be caused by numerous problems, including appli-ance defects or misuse, incorrect installation of wiring, or misapplied electrical cords.

In 1992, the Consumer Product Safety Commission (CPSC) contracted with Underwriters Laboratories (UL) to research and evaluate products and technology that could reduce the likeli-hood of residential fires. UL identified that “arcing faults” could eventually lead to the ignition of a fire as one possible cause of residential fires.

Arcing faults, a common cause of many home electrical fires, can occur when insulation around cords, wires or cables is damaged or deteriorated. Eaton's FIRE-GUARD and Combination arc fault circuit interrupters (AFCI) mitigate and low high current arcing faults and offer premium, reliable protection. AFCIs are required in bedroom circuits for new construction per the 2005 National Electrical Code. The CH series is 3/4-inch wide and is available in 1- or 2-pole.
  • Offers quick-make, quick-break switch mechanism combined with inverse time element tripping operation and trip-free handle design. Type CH circuit breakers trip to the OFF position, eliminating nuisance callbacks.
  • FIRE-GUARD model AFCI recognizes the unique current and/or voltage signatures associated with arcing faults and efficiently interrupts the circuit to reduce fire hazards.
  • Combination type AFCIs also directly detect persistent low current arcing faults down to 5 amps with associated mitigation of fire hazards in the cords connected to the outlets.
  • Add the AFCI Tester and Circuit Analyzer to verify proper wiring in a circuit. It's the only tester with GFI function and Line-Neutral test feature.
  • The 15 – 20A breakers can be used for heating, air conditioning and refrigeration equipment applications.