PX Pipe freeze protection controls

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The PX thermostat is designed for temperature control applications to prevent pipe freeze in ordinary areas. The unit is housed in a weatherproof NEMA 4X enclosure. The PX thermostat can be used in an ambient-sensing mode, line sensing mode, or used to control a contactor coil.

Features and benefits

Automatic activation - reduced operational costs

Remote bulb temperature sensing

Large, readily visible dial

Wall mounted

Water-tight enclosure

Technical Data:

  • Supply: 120V-277V
  • Max Load: 25A @ 120-240V, 22A @ 277V, resistive
  • Temperature Range: 0°F to 120°F (-18°C to 49°C)
  • Max. Exposure Temp.:140°F (60°C)
  • Enclosure Type: NEMA 4X, NEC Article 547 Compliant
  • Mounting: Wall mounted
  • Sensor: 5 ft. (1.5m) stainless steel capillary
  • Dimensions (HxWxD): 6.38" x 3.06" x 2.5" (162mm x 78mm x 64mm)
  • Switch: Single pole, double throw SPDT

Danfoss Pipe Heating System

Danfoss has designed versatile outdoor solutions for pipe heating, roof and gutter, and ground heating that can be installed on virtually any type of construction including private, business and institutional buildings.


Type Name Language Valid for Updated Download File type
Catalog Electric Heating Product Catalog VKAPA1022_2 English Multiple 14 Mar, 2019 2.6 MB .pdf
Data sheet PX Weatherproof Thermostat Datasheet English Multiple 19 Dec, 2008 204.2 KB .pdf

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Technical Support

Technical Support

Find information on electric heating troubleshooting, including our top frequently asked questions, our video library, links to electric heating literature, a link to our warranty registration form, newsletter, and more.