The MRRN1A-24D is part of the Struthers-Dunn series of relays and is a 24-VAC transformer-rated, double-pole, single-throw relay. It has a 4-pole double-throw (4PDT) contact arrangement that allows two independent coil circuits to be energized at the same time to activate two different sets of contacts. The MRRN1A-24D is designed to switch high inrush currents and is suitable for use in AC motor control, interlock control, appliance control, power factor correction, and many other industrial applications. It features an internal shield to reduce the effects of electrical noise and is UL, CSA, and CE listed.