Pressure Switches & Gauges

Pressuretrol® Limit controllers L4079A, B, W

High pressure limit switch suitable for steam, air, non-combustible gases, and fluids noncorrosive to the sensing element.

The L4079A,B, and W PressureTrol® Limit Controls are high pressure limit switches that break electrical circuits when pressure rises to a preset value. The L4079A and B can be used with steam, air, noncombustible gases, and fluids noncorrosive to the sensing element. L4079W is for use on oil burner systems. Features & Benefits: • L4079A has two ganged spst switches; breaks two circuits (may be both sides of the power supply) simultaneously. • L4079B has one spst switch. • L4079W is the same as L4079B but has seals for oil applications. • MICRO SWITCH® snap-acting switches are visible through transparent cover. • Switches open automatically but must be reset manually. • Trip-free reset mechanisms do not permit the limiting role of the PressureTrol® Control to be defeated by jamming the reset lever. • Control does not need leveling. • The L4079 is unaffected by moderate vibration