What is the difference between the Safety Control Shutoff and the Model A50 Current Sensing Relay?
Skuttle’s Safety Control Shutoff (formerly called a Safety Control Relay) is used exclusively with Skuttle 60-Series Steam Humidifiers, and is designed to prevent them from operating if the furnace blower fails. This helps protect HVAC equipment and homes from water damage and/or mold growth. The Safety Control Shutoff cannot be used as a current sensing relay. The Model A50 Current Sensing Relay, on the other hand, is designed for interfacing humidifiers with all types of forced air furnaces and air conditioners. Humidifier installations using the A50 depend on the furnace blower to initiate humidifier operation. As a result, the Current Sensing Relay’s function is essentially opposite that of a Safety Control Relay.
