Description
The Siemens Industrial Controls 3RT2028-1AN20 3-pole Contactor is an electrical switching component used in HVAC systems to control power supplied to motors, compressors, and other high-load equipment. Rated for 38A with a 220V coil and equipped with one normally open and one normally closed auxiliary contact, it allows control circuits to start or stop connected components safely. The contactor is commonly installed in control panels of air handling units, chillers, and condensing equipment. By responding to signals from thermostats or automation controllers, it manages electrical power flow within the system.
