Chromalox ITC1 & ITC2 Digital Heat Trace Controller 1 & 2 Circuit


  • 1 & 2 Circuit Models
  • 40 Amps per Circuit
  • SSR Control
  • 100 – 277 VAC, 50/60 Hz
  • Hazardous (Class I, Division 2) or Non-Hazardous Areas
  • Soft Start Feature
  • Operating Temperature: -40˚F to 104˚F (-40˚C to 40˚C)
  • Modbus RTU/RS485, RS422 & TCP/Ethernet
  • 10” x 8” x 6” (26cm x 21cm x 15cm) NEMA 4X FG Wall Mount Enclosure
  • High-Resolution Color TFT Display
  • LED Indication for Power, Load & Alarm per Circuit
  • Front Panel Capacitive Touch Switches
  • PID, On/Off or Manual Control Modes
  • One or Two Sensor Inputs / Circuit – Min, Max & Averaging
  • 2 Circuit Ambient Control from 1 RTD Sensor
  • Full Monitoring & Alarms
  • High / Low Temperature & Current, GFEP & Sensor Failure
  • Programmable Duty Cycle On Sensor Failure
  • AC & DC Alarms
  • Password Protected Security Levels
  • CE, UL/cUL

The Chromalox intelliTRACE ITC series is designed for line or ambient sensing heat trace applications such as freeze protection and/or process temperature control. This controller may be used with constant wattage, and mineral insulated, or self-regulating heating cables. The ITC is intended for use in industrial locations in either hazardous (Class I, Division 2) or non-hazardous environments. The ITC Series is offered in either a single circuit or an independently controlled and monitored dual circuit platform. They provide a unique, industry-leading combination of heating capacity, application flexibility, and technology. The ITC is a microprocessor-based system with SSR (Solid State Relay) power control which switches an impressive 40 Amps per circuit at 100-277 VAC. There are three user-selectable control modes available on the ITC: Manual, Off, or Auto. An output of 1% to 100% is available while in Manual Mode and you may choose either PID or ON/OFF control while in the Auto Control Mode.

You may employ one or two RTD sensors for either circuit. When using two RTD sensors, the ITC may be set to Low, High or Average. The ITC may also be configured as a 2-circuit ambient sensing controller that uses only one RTD to control both circuits. This provides the owner with much more flexibility and redundancy to help meet their ever-varying process demands. The ITC employs a soft start feature that uses a proprietary software algorithm which eliminates the inherent self-regulating in-rush current, resulting in less nuisance tripping at cold temperatures. The soft-start feature is selectable which allows this controller to be employed in non-heat trace applications as well.

All process conditions may be monitored and managed both locally and remotely. All process variables, communication and alarm settings, and security codes are user-adjustable via simple page menu navigation. In terms of system supervision, the ITC controller monitors the temperature, current load, and ground fault equipment protection leakage current (GFEP). Additionally, the alarms on the ITC consist of high and low temperature, high and low current, high GFEP current, and sensor failure. Should the ITC unit realize a failed sensor, the controller automatically switches into a user adjustable manual output duty cycle. To eliminate abrupt current spikes, the Chromalox ITC employs bumpless transfer power switching when switching over from either manual or auto mode. The ITC unit is housed in a compact wall mountable, NEMA 4X FG or optional 316 SS enclosure and it features a high resolution TFT display, LED indication of Load, Power & Alarm status for each circuit and front panel capacitive touch user interface buttons which are mounted on a hinged door. The ITC enclosure provides electrical connections for the heating cable, the AC Power and the RTD Sensors and it comes complete with stainless steel mounting brackets.



Sensor Type 3-wire RTD, 100 W PT, 0.00385 W/W/˚C, 20 W balanced lead wire
Number of Sensor Inputs 1 or 2 per Circuit
Sensing Configuration Range:  Single, Low, High, Average, Use RTD1 to control both circuits
Power Switching SSR
Number of Circuits 1 or 2
Capacity 40 Amps per Circuit
Control Types
PID Control mode must be set to Auto
Autotune On or Off
Proportional Band, (˚F) Range:  1 – 100
Integral (sec/repeat) Range:  0 – 9,999
Rate or Derivative, (seconds) Range:  0 – 500
On/Off Control mode must be set to Auto
Dead band, (˚F) Range:  2 – 100
Manual Range:  0 – 100%
Soft Start, Current Clamping Enable or Disable
Temperature (PV) Range:  -80˚F to +1100˚F (-62˚C to +593˚C)
Low Temperature Alarm Range:  -80˚F to +1050˚F, Off (-62˚C to +566˚C, Off)
High Temperature Alarm Range:  -80˚F to +1150˚F, Off (-62˚C to +621˚C, Off )
Low Current Alarm Range:  0.1 A – 50.0 A, Off
High Current Alarm Range:  0.1 A – 50.0 A, Off
GFEP Range:  30 mA – 150 mA
GFEP Alarm Condition Alarm Only, Alarm & Trip, Alarm & Latch, Alarm & Trip & Latch
Output on Sensor Failure Range: 0–100%, Bumpless Transfer to Manual Mode
Calendar Year, Month, Day, Date, Hour & Minute
Audible button depress Range:  On, Off
Security 3 Levels of password protected security
Alarm State Normally Open, Normally Closed
Display, HMI, Indication 
Display 3.5” 320 x 240 RGB Full color graphic TFT module
Human Interface .5 Capacitive Touch Input Buttons
LED Indication Power (Green), Load (Amber), Alarm (Red) – Per Ckt
Alarm Types Low & High Temperature, Low &  High Current, High GFEP, Sensor Failure
Alarm Relays 1 x DC Alarm Output, 1.8 Amp, 0 – 50 VDC
1 x AC Alarm Output, 1.8 Amp, 12 – 240 VAC
Alarm Contact State Mode Default  Optional
Normal Operation Closed Open
Alarm Condition Open Closed
Power Off Open Open
Modbus RTU/RS-485 (2 or 4 wire)
Modbus TCP/Ethernet (optional)
Webserver/Ethernet IP (Optional)
Operating & Environmental 
Temperature -40˚F to 104˚F  (-40˚C to 40˚C)
Power Supply 100 to 277V 50/60Hz
Protection IEC IP66
Enclosure rating NEMA 4X FG (Optional Stainless Steel)
Approvals UL/cUL Ordinary and Class I, Division 2, Groups
A,B,C,D Hazardous Locations. (UL File: E347725)

Ordering Information