Overview
The Belimo 01DTS-504 is a low-temperature detection sensor (freezestat) designed to protect HVAC heating/cooling coils from frost damage. It features an auto-reset SPDT switch and a 10-foot vapor-filled capillary tube.
Features
- Vapor-filled copper capillary tube responds to lowest point temperature
- Automatic reset functionality when temperatures return to normal
- SPDT switch output for signal cutoff or alarm activation
- NEMA 4 / IP65 weather-resistant enclosure
Specifications
- Sensor Type: Low Temperature Detection (Freezestat)
- Reset Type: Auto reset
- Output: 1 x SPDT switch
- Capillary Length: 10 ft [3 m]
- Enclosure Rating: NEMA 4 / IP65
Applications
- Freeze protection for HVAC heating and cooling coil registers
- Low-temperature cutout control in air handling units



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