Robertshaw 803A Line Voltage Thermostat

The Robertshaw 803A line voltage thermostat is a reliable cooling-only control for line-voltage HVAC systems. It operates at 120/240/277 VAC with an SPST switch and uses bimetal temperature sensing for improved thermal performance. The mercury-free design requires no leveling or special disposal.

Its J-box-compatible body meets code while speeding installation, and a positive-off switch assures shutdown of the system. It serves as a universal replacement for most existing line-voltage thermostats.