Aprilaire #50 Current Sensing Relays

Aprilaire #50 Current Sensing Relay for 24V applications.

The Aprilaire #50 current sensing relay is needed if you have a multi-stage furnace, and will simplify the humidifier installation on Furnaces without accessory terminals. The #50 relay is used to sense current to power the humidifier only when the furnace blower motor is running.

The #50 works with the these humidifier units: Honeywell: HE220, HE225, HE260, HE265, HE360, HE365, and Aprilaire: 445, 550, 558, 500, 560, 568, 600, 600

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Click here to for the Aprilaire #50 current sensing relay Installation Manual


Voltage Range: 21-24 VAC, 50-60 Hz Sensing Current: Minimum of 4.0 Amps Operating Ambient Temperature Range: 40F-104F Wire Lead Length: 32" Dimensions: 1" x 1-7/16" x 2-3/4" Load Ratings: Max (12 Watts) 0.50 amps Min (3 watts) 0.12 amps
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Aprilaire #50 Current Sensing Relays