| Amperage Rating | : | 0.4 A |
| Compatible Models | : | 110~112~220~224~240~400~440~500~550~550A~558~560~560A~568~600~700~760~768~HCWB2-12~HCWB2-12A~HCWB2-17~HCWB2-17A~HCWB3-12~HCWB3-12A~HCWB3-17~HCWB3-17A~HCWBK2-12~HCWBK2-12A~HCWBK2-17A~WB2-12~WB2-12A~WB2-17~WB2-17A |
| Depth | : | 1 in |
| For Use With | : | Humidifier |
| Function Type | : | Current Sensing Relay |
| Height | : | 1.438 in |
| Installation / Mounting Type | : | Internal Mount |
| Operating Temperature Rating | : | 40-104 F |
| Package Quantity | : | 1 |
| Power Source | : | Electric |
| Product Type | : | Current Sensing Relay |
| Shipping Weight | : | 0.15 lbs |
| Voltage Rating | : | 24 V |
| Watts | : | 12 W |
| Width | : | 2.75 in |
The Model 50 Current Sensing Relay is designed to activate a humidifier in conjunction with the furnace blower. Operating at 24 VAC, it detects the current from the blower motor and closes the circuit to the humidifier's solenoid valve, ensuring humidification only occurs when air is flowing through the system.This relay is compatible with an extensive array of Aprilaire® humidifier models, making it a versatile replacement part for restoring proper automatic humidity control. Its simple design ensures reliable performance and easy integration into the existing system.