Belimo NRQX24-MFT Actuator R-410A meaning the switch is designed

meaning the switch is designed to open the circuit at 140°F to prevent overheating and automatically reset as it closes at 95°F

It indicates a sweat (solder) connection

this negative pressure switch (often referred to as a spill switch) is engineered to sense obstructions in the venting system

The leading zero is often omitted in various technical catalogs and parts databases

Belimo NRQX24-MFT Actuator R-410A meaning the switch is designedThe Belimo NRQX24 MFT Actuator is a non spring return, high torque solution designed for precise control of ball valves and dampers in demanding HVAC applications. This 24V proportional actuator utilizes Multi Function Technology (MFT), allowing for field parameterization of input signals, including 0 10 VDC, 2 10 VDC, and 4 20 mA. Engineered for reliability in DDC systems, it provides high resolution and consistent torque output, ensuring accurate