Industrial MD26R Wall Mount Bi-Metal Line Voltage Thermostat

Industrial MD26R by Fahrenheat is a wall-mount bi-metal line-voltage thermostat designed to regulate electric heating loads directly from mains. The unit is rated for 22 A at 120–240 VAC, making it suitable for switching standard line-voltage heating circuits without a separate low-voltage control system. Inside, a bi-metal strip responds to ambient temperature changes and mechanically opens or closes the switch to maintain the desired temperature. Bi-metal thermostats operate by the differing expansion rates of two metals, creating bending motion that interrupts or completes the electrical circuit as the setpoint is reached. This wall-mount thermostat is intended for installations where direct control of heating elements is required, providing simple mechanical on/off control without electronics at low voltages. Use cases include controlling electric heaters and similar line-voltage loads where a robust, mechanical thermostat is preferred. The MD26R rating covers the necessary current and voltage range to handle heating elements within the 120–240 VAC spectrum.