Idec Relays HW1S-3TF20 3-Position Selector Switch H-Series

The IDEC Relays HW1S-3TF20 Selector Switch is a panel-mounted control component used to allow an operator to select between three maintained circuit states using a rotary knob. It is used in HVAC Systems such as air handling units, industrial ventilation systems, and control panels where mode selection or equipment operating switching is required. The switch operates through an internal contact mechanism that changes electrical pathways as the knob is rotated and held in, ensuring stable signal routing. It is installed on control panels mounting cutout.