Overview
The Belimo 01DTS-504X is a manual-reset low-temperature detection sensor (freezestat) designed to safeguard HVAC coils against freezing conditions. It includes a 10-foot capillary tube and SPDT switch for safety shutdown.
Features
- Manual reset mechanism requiring operator intervention after a trip
- 10-foot vapor-filled copper capillary tube for early frost detection
- SPDT contact switch for immediate fan or valve safety lockouts
- Rugged NEMA 4 / IP65 protective housing
Specifications
- Sensor Type: Low Temperature Detection (Freezestat)
- Reset Type: Manual reset
- Output: 1 x SPDT switch
- Capillary Length: 10 ft [3 m]
- Enclosure Rating: NEMA 4 / IP65
Applications
- Frost protection in ductwork and cooling coils requiring safety lockouts
- Low-limit temperature cutout in critical HVAC air handlers


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