Nordyne 01-0837 Heat Sequencer 1-20 On, 40-110 Off

The Nordyne 01-0837 Sequencer is an electrical control part that operates thermal heating stages by closing its connections between 1 and 20 On and opening its contacts between 40 and 110 Off in response to thermostat and secure signals in HVAC systems. It is mounted in the control compartment of electric furnaces and air handlers and regulates the on and off operation of resistance heating elements. In HVAC systems, this sequencer ensures that the operation of the heaters is organized and regulates the electrical load.