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Durable Construction: Engineered to withstand the vibration and thermal cycles typical of industrial refrigeration

With a rugged aluminum type wheel for manual isolation and a professional-grade finish

NEMA 4X rated enclosure engineered specifically to protect Belimo actuators from harsh environmental conditions

Tjernlund Products 950-2064 Limit Swt 318820-201 Using a switch other thanAs a veteran HVACR technician, you know that keeping a siding or power vent system operational depends on reliable safety interlocks. The Tjernlund 950 2064 Limit Switch is a critical 185 degree Fahrenheit linear limit switch specifically engineered for high performance venting applications. This spillage sensing switch is a direct replacement for Tjernlund VP 2, VP 3, WHK 2, and WHK E models, providing a manual reset safety layer that prevents burner