Lennox 18K44 250-280F AUTO Limit Switch 250-280F AUTO Limit Switch

250-280F AUTO Limit Switch

The 18K44 250-280F AUTO Limit Switch is a 3 pin, DIN plug on style, OEM replacement electrical control. It is designed for use in a variety of heating and cooling equipment including boilers, furnaces, air handlers, and chillers. The large red pilot lamp illuminates when the signal coil is energized at a high setting and turns off when the setting reaches the level set by the potentiometer. This gives an indication to those around that a change is being made. The automatic reset device resets to the ON position after power loss or a short circuit.

Lennox 18K44 250-280F AUTO Limit Switch is used for 2 wire control circuit and 3 wire control circuit(2 color).

Lennox® brand 18K44 250-280F AUTO Limit Switch

The Lennox 18K44 250-280F AUTO Limit Switch is designed for residential or commercial heating and cooling systems. It has a 2-wire temperature sensor that helps prevent turning off your equipment before reaching set temperature. The knob is white in color and operates on 250-280F settings.

Maintaining the proper central air temperature in your home is important, and keeping your thermostat where it belongs helps make sure that your system is operating efficiently. The Lennox ZEN19 11-point, 250-280F AUTO Limit Switch will simplify installation, giving you more time to sit back and enjoy efficient cooling throughout your home.

The 250-280F is a Single Pole Double Throw (SPDT) Normally Open (NO) resistor type thermally protected single phase limit switch. The device is used in h & c air distribution systems for on/off/auto control of outside air dampers. The 250-280F can be wired in both lead direct and lead reverse applications. The construction is watertight, flameproof and oil resistant. It features a rugged all metal wire wound stem, a stainless steel actuator and a green or red ice glass filled lens cover.

This is a brand new Lennox aftermarket replacement 18K44 250-280F Limit Switch. If your home furnace has gone out of control and cycling on and off continuously, it may be time to buy a new control board for your unit.