Marley Engineered Products 4520-0011-002 Limit Switch The Reznor 101901 Switch is

The Reznor 101901 Switch is a heavy-duty Single Pole Double Throw (SPDT) component engineered for precise control in HVACR systems

Industrial Build Quality: Features reinforced ports and gold-plated contacts to resist corrosion and mechanical fatigue

High Voltage Capacity: Rated for systems up to 277V

as the voltage rating indicates the maximum threshold it can handle

the standard pin configuration may accommodate other industrial relays

Marley Engineered Products 4520-0011-002 Limit Switch The Reznor 101901 Switch isAs a seasoned technician, you know that a reliable furnace limit switch is the primary line of defense against heat exchanger failure and fire hazards. The Marley Engineered Products 4520 0011 002 is a high performance linear limit protector designed for precision in demanding industrial and commercial heating applications. This 325F CO AUTO limit switch is engineered to monitor temperatures within the plenum and automatically interrupt the heating