Barber Colman TA-3434 Thermostat

The Barber Colman TA-3434 is a high/low duct thermostat designed for monitoring and controlling duct air temperature in HVAC systems. Operating on 120–240V, this manual-reset thermostat is ideal for safety cutout and over-temperature protection. Its rugged construction and reliable sensing capabilities make it a trusted component in commercial and institutional heating and cooling systems. Now part of the Schneider Electric family, the TA-3434 upholds Barber Colman’s reputation for dependable control.

Technical Specifications

  • Model: TA-3434
  • Type: Hi/Low Duct Thermostat
  • Voltage: 120–240V
  • Reset Type: Manual
  • Mounting: Duct-mounted
  • Application: Air temperature control and limit protection
  • Manufacturer: Barber Colman (Schneider Electric)

Key Features

  • Designed for high/low temperature duct sensing
  • Manual reset for safety-critical systems
  • Operates at standard 120–240V line voltage
  • Durable housing suitable for commercial HVAC environments
  • Reliable performance for over-temp protection
  • Ideal for use with alarms or shutdown circuits

Compatible Components & Accessories

  • Air handling units and duct systems
  • Control panels and limit switches
  • Schneider Electric building management systems
  • Compatible mounting brackets and electrical boxes

Industry Applications

  • Commercial HVAC systems
  • Institutional and industrial ventilation
  • Equipment over-temperature shutdown
  • High-limit duct temperature monitoring
  • Manual-reset safety applications

Installation & Maintenance Notes

  • Mount securely in duct airflow path
  • Wire to 120–240V control or alarm circuit per local code
  • Set temperature trip point as required
  • After activation, reset must be done manually
  • Inspect regularly for buildup or airflow obstructions near sensor


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