Allen-Bradley 810-NX45 Inverse Time Relay

Allen-Bradley 810-NX45 Inverse Time Relay is a Bulletin 810 inverse-time current relay from Allen-Bradley, built for time-delayed protection in electrical motor and feeder circuits. This model carries a 600 VAC maximum rating, aligning with typical industrial power distributions. As part of the 810 family, the NX45 provides an inverse-time trip characteristic: higher currents cause shorter trip times, enabling selective coordination with upstream protective devices and helping minimize motor damage from overloads or short circuits. The NX45 designation identifies this specific variant within the 810 series, designed to plug into, or install alongside, standard motor control hardware where reliable overload protection is required. Applications include protection of AC motors in manufacturing, processing, and packaging environments, as well as protection of circuit feeders in panel assemblies. Built to withstand the demands of industrial environments, the 810-NX45 inherits the rugged construction and proven performance associated with Allen-Bradley protective relays. Typical installations include motor control centers and panel-mounted protection schemes.