the SPST contacts are designed to switch line-voltage loads common in hydronic circulator applications

meaning it maintains a fixed 10°F span between the cut-in and cut-out points rather than a fixed reset temperature

In applications exceeding this

Simplified Installation: Comes with pre-configured 7-inch wire leads and socket terminals for rapid "drop-in" connectivity

Siemens Building Technology GCA164.1U Actuator R-22 the SPST contacts are designedThe Siemens GCA164. 1U Actuator is a heavy duty modulating spring return damper actuator designed for HVAC systems requiring high torque performance and reliable fail safe operation. Built with a rugged all metal housing, this OpenAir GCA Series drive delivers 160 lb in torque (18 Nm) to manage large dampers in VAV systems, mixed air units, and exhaust applications. It operates on 24VAC DC power and accepts a 0 10 VDC control signal, providing precise