5300 Series Electric Thermostat with Auxiliary Switch

The 5300 Series thermostat with auxiliary switch is a SPST, snap-acting control. Models are available with standard electrical ratings and pilot-duty ratings. Five types of auxiliary switch types have been produced. For a complete description, see "Auxiliary Switch Description" below. Note: An auxiliary switch control can also be used to replace a standard (non-auxiliary switch) control if specifications are similar. Just disregard the switch. Auxiliary Switch Uni-Kit. The 5300-603 Series auxiliary switch Uni-Kit was designed specifically to replace a wide variety of auxiliary switch models. Auxiliary switch Uni-Kit has a mechanical "positive off" in the dial "off" position.