Schneider Electric (Square D) 9050JCK70V20 11-Pin DPDT Timing Relay 10A 120V

The Schneider Electric (Square D) 9050JCK70V20 is a 120-volt AC (VAC), 10-ampere DPDT (double-pole, double-throw) relay with 11 pins designed for a variety of control applications, including HVAC systems. The coil of the relay is powered by the low-voltage control signal, which is typically 24 volts AC in HVAC systems. When the coil is powered, it creates a magnetic field. One of the two permanent contacts on each pole is connected to a moving contact that is actuated by the magnetic field, which causes it to change positions. The control signal decides which circuit is completed by the ordinarily open (NO) or normally closed (NC) contact on each pole based on whether the relay is powered or not.