Electric Heat Thermostat SPST, High Sensitivity, Heat Only
Brand: Honeywell
Part#: T4398A1021
Honeywell T4398A1021 Electric Heat Thermostat for Electric Baseboard Heat includes thermometer, range stops and locking cover screws. A snap action switch of Honeywell T4398A1021 makes the heating circuit on temperature fall.
This High Performance Honeywell Electric Heat Thermostat provides precise line voltage control of resistive-rated electric heating equipment.

  • Electric baseboards
  • Convectors and fan forced heaters (resistive rated loads)

  • For control of resistive-rated baseboard electric heaters
  • Extremely sensitive to temperature changes
  • Replace virtually all standard wall-mounted line voltage thermostats
  • Color-coded leads allow easy installation
  • Include long-lasting Micro Switch mechanism
  • Rugged, plastic mounting base
  • Cover thermometer indicates room temperature
  • Well suited for upgrades and high-end new construction
  • Mounts directly on vertical 2 x 4" outlet box, or on 4 x 4" outlet box

Technical Specifications:
  • Mounting: Vertical Mount
  • Color: Premier White
  • Stages: 1 Heat
  • Electrical Connections: 6" (150 mm) copper leadwires, suitable for connecting to aluminum wiring if approved CO/ALR solderless connectors are used
  • Switching Action: SPST
  • Accuracy: 1°C
  • Dimensions: 4-1/2" high x 2-7/8" wide x 2-5/8" deep
  • Setting Temperature Range: 50°F to 80°F
  • Differential Temperature: 2°F (1°C)
  • Electrical Ratings: Noninductive resistive 22A at 120/208/240 Vac. 19A at 277 Vac.
  • Frequency: 60 Hz
  • Sensor Element: Vapor filled dual diaphragm
  • Ambient Temperature Range: 50°F to 80°F
  • Approvals, Underwriters Laboratories Inc: Listed
  • File No. E47434, Guide No. XAPX
  • Approvals, Canadian Standards Association: Listed: File No. LR1322
  • Includes: Thermometer, range stops and locking cover screws
  • Tradeline Value: Tradeline
  • Voltage: 120/208/240/277 VAC
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