Carrier HH18HA187 Limit Switch The Nordyne 904574 Limit Switch

The Nordyne 904574 Limit Switch is a critical safety component designed for high-limit temperature monitoring within gas-fired furnaces

While this element is the core heating component

With a contact rating of 20A and a frequency of 50/60 Hz

Common Questions Is this connector compatible with third-party 1/4" OD copper tubing

providing essential branch circuit protection for heating

Carrier HH18HA187 Limit Switch The Nordyne 904574 Limit SwitchThe Carrier HH18HA187 Limit Switch is a critical OEM replacement part designed for high limit safety monitoring in residential and commercial gas furnaces. This SPST normally closed disc style switch features a fixed 180 degree open setpoint and a 80 degree close reset point, ensuring the heat exchanger does not exceed safe operating temperatures. Engineered for automatic reset functionality, the HH18HA187 integrates seamlessly into the safety string