Series TPR
General Purpose Switch

Barksdale_Temp Switch_TPR Description
Barksdale's TPR Series Temperature Switch adds flexibility to Barksdale's solid reputation for quality and reliability, and offers versatility for your temperature sensing needs. This switch is ideal for applications where freeze protection or lower temperature control is critical. The TPR is available in factory set and locked NEMA 4X configurations. The tin-plated sensor comes in 3 or 10 foot lengths. The TPR Series feature limit switches with 22 amps @ 125/250 VAC and 3 amps @ 480 VAC electrical ratings that allow thermostats to be used for higher current, heat tracing applications. The TPR Series is UL listed and CSA approved.



  • High accuracy
  • NEMA 4X & IP 65
  • UL, CSA and CE approved
  • Low cost


  • Heat trace
  • Water equipment
  • Process equipment
  • Machine tools and industrial equipment
  • Freeze protection


Accuracy: ±4°F
Single pole double throw (SPDT), prewired snap action
22 amp @ 125/250/480 VAC
Electrical Characteristics: All models incorporate Underwriters' Laboratories, Inc. and CSA listed single pole double throw snap-action switching elements. Switches may be wired normally open or normally closed.
Wetted Parts: Tin plated copper sensor and capillary
Electrical Connection:
1-1/8" (28mm) hole for 3/4" NPT conduit hub
12", 14 AWG stranded copper wire
Enclosure Rating: NEMA 4X
Enclosure/Housing: Polycarbonate (black)
Bulb and Capillary:
Capillary Length:
System Pressure (max):
3-1/8" (79mm), 1/16" (10mm) dia.
30" (762mm) or 120" (3048mm)
300 psi without thermowell
Silicone oil-fi lled
UL listed, fi le E56247
CSA certifi ed, fi le LR 58658
EN/RFi: to EN 5011
Temperature Range:
-40° to 160°F (-40° to 71°C)
Fixed setpoint factory set at 40°F
Contact closes on decreasing temperature
Ambient Temperature: -30° to 140°F (-34° to 60°C)
Vibration: 10 g's 10-500 Hz, MIL-STD 202F
Shock: 50 g's, 10 mS, MIL-STD 901C
Weight: 1.1 lbs. (0.5 kg)