APGN660-6659-2

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A circuit breaker is a safety device used in electrical systems for managing and protecting equipment against overloads and short circuits. It is designed to work automatically when an overload or short circuit occurs or when its internal sensors detect an over-current. The circuit breaker uses a fuse, a switch, and a thermal element which all work together to protect your home from these dangerous events and to ensure that the circuit breaker continues to operate correctly.

The APGN660-6659-2 is a circuit breaker, specifically an arc fault circuit interrupter (AFCI) used in overcurrent protection of residential and commercial circuits. This AFCI is UL certified with a voltage rating of 600VAC/DC and a current rating of 100A. It is a combination of two distinct detection techniques: sensing overcurrents and detecting fault arcs. The sensing overcurrents detect anomalous current levels and trip the breaker in order to prevent an overcurrent or overload.

The circuit breaker is designed to detect the origin of typical arc-fault events such as arcs created by damaged wires or conduits, and it is designed to disconnect the protected circuit to prevent damage to property and personal. This AFCI utilizes the NFPA70 (National Fire Protection Association) Standard - "Requirements for Arc Fault Circuit Interrupters" currently in effect for electrical device safety.

When it works, the APGN660-6659-2 quickly actuates to open the protected circuit and disconnect power within milliseconds. It does so by detecting an arc fault in the circuit it is protecting. Arc fault detection is unique because it uses sophisticated pattern recognition algorithms to sense common electrical current distortions caused by arcing. As soon as any arc fault current is detected, the device trips and the circuit is disconnected.

This particular AFCI works in either a series or a parallel configuration. The majority of AFCI protection devices are wired in series and are considered the most reliable. A series configuration offers end-of-line protection, meaning it is the last device on a branch circuit feeding an outlet or lighting fixture. When the device trips, it prevents the current from flowing to the outlet or lighting fixture, preventing potential damage and increasing safety.

In a parallel configuration, the device is placed directly in line with the current, providing an immediate break of the circuit as soon as it senses an arc fault. This configuration is ideal for detecting dangerous arc faults that don’t always travel through the series connected breakers, but is also prone to false trips when other electronic devices in the circuit generate small electrical transients. In this configuration, the AFCI should always be rated for the highest amount of current in the protected circuit in order to prevent a dangerous overload of the circuit.

While the APGN660-6659-2 may be a great tool for residential or commercial applications, it is important to understand the risks that it is designed to protect against. Arc faults can create enormous amount of heat and can cause materials to ignite depending on the environment. The AFCI’s ability to sense an arc fault and disconnect before significant damage can occur may save lives and property and is an invaluable tool for safety.

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