High-Load Capacity: Direct control of inductive loads up to 16 FLA and non-inductive loads up to 20A reduces the footprint of the control panel

and WeatherKing gas furnaces to ensure proper voltage draw and heat output

This assembly is specifically calibrated for Williams Floor Furnaces models 4505A and 6505A

This unit is built for B-width cabinets

the ZB110UV ensures precise ignition timing and robust flame monitoring for demanding combustion environments

Siemens Building Technology 331-4811 Actuator 320720-756 High-Load Capacity: Direct control ofFor veteran technicians managing air handler units and mixing boxes, the Siemens 331 4811 represents the industry standard for pneumatic reliability. This No. 3 Pneumatic Damper Actuator is engineered with a rugged, all metal body designed to withstand the harsh environments of mechanical rooms. Operating on a nominal 8 to 13 psi spring range, this unit provides precise, gradual, or positive actuation of HVAC dampers and air valves. The 331 4811