The 4 Pole Double Throw Relay, Model 4PDR, is a 24 Volt, AC, multi-purpose control relay. The 4PDR is a plastic DIN rail or flush mounted socket and plug-in- relay. The 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 4PDR is a slave damper control relay to control more than one damper from a single switch or zone on a control panel. The 4 contacts allow up to 4 separate dampers to be control by a single switch or control.
The two screws directly under the plug-in-relay are the relay coil, terminals 13 and 14. The bottom row of terminals are the common for each switch and the top row of terminals #1, 2, 3 and 4 are the normally closed contacts and the second row of terminals #5, 6, 7 and 8 are the normally open contacts. The plug-in relay is easily replaceable and is the Model PIRR.
Ratings Coil: 24 V AC Nominal coil current 50mA Contacts- 3A @ 250VAC Gold Flashed Silver Alloy Operating Temperature: -40F to 122F
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