Heat sequencers

The Zettler Controls heat sequencers are used to stage electric heaters to prevent circuit overload. Common applications include electric furnaces, baseboard heaters, and heat pump blower and heating element control. The device uses a positive temperature coefficient heater and bimetal disc(s) to initiate switching action. The PTC is self-current limiting, ensuring stable switching action over a wide range of voltages.

ZC24A34 Series Features:

  • Solid State
  • Standard operating ambience between -50°F (-45.5°C) and 165°F (73.8°C)
  • 12.5A to 25A contact ratings
  • Various mounting positions
  • Shock and Vibration Resistant
  • UL File E237660

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