Hartland Controls CON-AUX300-1 AUX Switch R-410A This is a multi-trial model

This is a multi-trial model

field-proven accessory designed for the physical operation of 4-inch butterfly valves and dampers

this regulator is tapped for NPT vent bosses and can be paired with an 12A06 vent limiting orifice or 12A04 device for upright installations

Delivering 18 lb-in torque

Built with a normally closed (N

Hartland Controls CON-AUX300-1 AUX Switch R-410A This is a multi-trial modelThe Hartland Controls CON AUX300 1 is a high performance SPDT auxiliary switch engineered specifically for seamless integration with three phase contactors. Designed for heavy duty HVAC R applications, this contactor auxiliary contact provides critical status feedback and control interlocking for industrial and commercial systems. It features a single pole double throw (SPDT) configuration, allowing for flexible wiring of both normally open (NO) and