The Aprilaire #51 current sensing relay simplifies air cleaner installation on furnaces without accessory terminals.
It can also be used to simplify installation of inline duct booster fans.
Voltage Range: 100-125 VAC, 50-60 Hz.
Sensing Current: Minimum of 4.0 Amps.
Product Review
Product Description
This Aprilaire #51 current sensing relay (minimum of 4 amps) has a voltage Range of 100-125 VAC, 50-60 Hz, and simplifies air cleaner installation on furnaces without accessory terminals. It also works for Honeywell HE220, HE225, HE260, HE265, HE360 and HE365 humidifiers.