Siemens Building Technology GRD126.1U Actuator 326058-755 including the 21-933

including the 21-933

For technicians servicing forced-air systems

A failing Trane BRD2893 typically presents as intermittent fan operation

Reliable Connectivity: Features a 9-pin terminal block to ensure secure

Manual Reset Safety: High and low side lockdowns ensure the system remains offline until a technician identifies and corrects the underlying pressure issue

Siemens Building Technology GRD126.1U Actuator 326058-755 including the 21-933The Siemens Building Technology GRD126. 1U Actuator is a heavy duty 24V fire and smoke damper actuator designed for two position control in high stakes life safety systems. Delivering 30 lb in torque, this spring return actuator is engineered to meet UL 555 and UL 555S standards, ensuring dampers reach a fail safe position during a power loss or fire event. With a rapid 30 second drive time and a 15 second spring return, it manages combination fire