Specifically engineered for R410A systems

provided they are within approximately 30 feet

which eliminates the need for field modifications and ensures peak airflow efficiency

ensuring synchronized phase switching to protect internal motor windings

Siemens Building Technology GRD226.1U Actuator 320788-702 Specifically engineered for R410A systemsThe Siemens OpenAir GRD226. 1U is a heavy duty fire and smoke damper actuator engineered for life safety systems requiring high reliability fail safe performance. Operating at 120V AC, this spring return actuator provides 30 lb in of torque, making it a standard choice for two position control of small to medium combination fire and smoke dampers. Designed to meet stringent UL555 and UL555S safety standards, the GRD226. 1U features a 30 second drive