Freeze Protection Ambient Sensing Series

Freeze Protection Ambient Sensing Series
  • Standard Nema 4 Enclosures
  • Nema 4X Stainless Steel Option
  • Hand/Off/Auto Selector Switch
  • 12, 18, 20, 30, and 42 Position Panelboards
  • 15, 25, 30, and 40 Amp Single-pole and Double-pole 30 mA Ground Fault Thermal-Magnetic Circuit Breakers
  • 100 and 225 Amp Main Bus
  • Single-phase 120/240 VAC
  • Three-phase 120/208 VAC 4-Wire
  • Three-phase 277 VAC 4-Wire
  • 100 and 250 Amp Main Disconnect Switch Option
  • Ambient and Line Sensing Control
  • WeatherTrace Sentinel Monitoring with Common Alarm and Re-Ring Feature (The re-ring feature allows the WeatherTrace panel to
    communicate additional alarm conditions in the system by momentarily clearing and resetting the alarm output contact. The customer's monitoring device such as a PLC or DCS would interpret this condition to alert the operators of an additional alarm occurring.)
  • Z-Purge Pressurization System for Class I, Division 2 Option
  • Enclosure Heater Option for Subzero Ambients
  • UL and cUL Third Party Approvals

FPAS – Freeze Protection Ambient Sensing Series

The FPAS series controls multiple heat trace circuits via an ambient sensing external thermostat, external electronic controller or via an ambient sensing, door mounted 1601E controller. Chromalox recommended controllers include: RTAS, RTAS-EP, B100, E100 or the 1601E microprocessor controller.

The FPAS may be operated in two modes; automatically with the external controller, or in manual override via the Hand/Off/Auto selector switch.

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