AF0500 Arc-Flash Relay
The AF0500 is a microprocessor-based arc-flash protection relay that limits arc-fault damage by detecting the light from an arc flash and rapidly tripping the feeder breaker.
PGR-8800 Arc-Flash Relay
The PGR-8800 is a UL and cUL Listed Arc-Flash Relay that reliably detects developing Arc-Flash incidents without nuisance tripping by looking for a combination of excess light and current.
NEC 240.67 Arc-Energy Reduction
Arc energy reduction is critical for electrical safety in the workplace. NEC 2011 introduced an Arc Energy Reduction requirement for circuit breakers (NEC 240.87) rated 1200 A and higher. The added circuit breaker requirement has reduced arc-flash injuries since being introduced by lowering fault clearing times. The value of 0.07 s for the new fuse clearing time requirement was chosen to align with circuit breakers using zone selective interlocking.