United Electric H100-218 Vacuum Switch 321894-709 Turning the adjustment screw clockwise

Turning the adjustment screw clockwise will increase the set point to accurately reflect fan or filter status

The A/20K-D4-PB is ideal for monitoring supply

Durable Cast Iron Housing: Provides superior strength and resistance to mechanical stress in industrial settings

The electrical specifications and 10

United Electric H100-218 Vacuum Switch 321894-709 Turning the adjustment screw clockwiseThe United Electric H100 218 Vacuum Switch is a heavy duty, field adjustable control engineered for precise vacuum pressure monitoring in demanding industrial and HVACR environments. This SPDT vacuum switch features a rugged, NEMA 4X epoxy coated aluminum enclosure, making it a reliable choice for protecting pumps, compressors, and heat tracing systems against negative pressure excursions. With a 1 4" FNPT nickel plated brass connection and phosphor