4 PDTC Full Form - What is Full Form of 4 PDTC?

4 PDTC full form is 4 Pole Double Throw Relay Model. 4 Pole, Double Throw action provides four separate single pole double throw contacts that can be used for a variety of applications. The most common use of the 4 PDTC/4PDR is a slave damper control relay to control more than one damper from a single switch or zone on a control panel.