Model A50
Current Sensing Relay
Description and Installation Instructions
The Model A50 (24 volt) Current Sensing Relay is designed for interfacing humidifiers with all types of forced air furnaces and air conditioning equipment.
Actual size
The Model A50 Current Sensing Relay measures electrical current rather than voltage. This type of relay is more reliable and less expensive than using sail switches, pressure switches or other types of relays.
The relay is easily installed around the common lead of the blower motor and inserted into the circuitry. (See wiring diagrams on back.)
The Model A50 case is made from
See Back for Installation Instructions ```
A50 • Rev 2/05
