nVent RAYCHEM 460 Single Point Electronic Controller For Heat Tracing Systems

The nVent RAYCHEM 460 is a c-UL-us Listed single-point heat tracing controller designed for pipe freeze protection, flow maintenance and heat loss replacement applications. It includes a 5″ inch color touch screen display for intuitive set up and programming right out of the box. The 460 controller may be used with line-sensing or ambient-sensing and Proportional Ambient- Sensing Control (PASC) modes. It measures temperatures with two 2 KOhm / 77°F (25°C), 2-wire Thermistor connected directly to the unit. The controller can also measure ground fault current to ensure system integrity. The controller includes ground fault current sensing and relaying equipment compliant with UL1053 standard.

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Product Description


  • 5″ color touch screen for easy set-up and programming
  • Easy to install push-in cage-clamp wire terminals
  • Standalone unit that can be DIN Rail mounted
  • Ground fault equipment protection (GFEP) compliant with UL1053
  • User-defined settings for ground fault alarm and trip levels
  • User-defined high temperature cut-out setting
  • User-defined auto-cycle feature to automatically and regularly test the system for any problems
  • Energy efficient PASC mode available
  • Alarm relay for remote alarm annunciation
  • Two temperature sensors that can be used for ambient and line sensing
  • Programmable in advance in power-off mode by using external power bank/charger and USB connection 

Electrical Properties

Supply voltage                                                              120/208/240/277 VAC, 50/60 Hz
Ambient operating temperature range                       32°F (0°C) to 105°F (40°C)
Ambient storage temperature range                         -4ºF (-20ºC) to 122ºF (50ºC)
Internal power consumption                                       9 W maximum
Output relay switching capacity                                 24 A @ 120/208/240/277 +/-10% Vac; 50/60 Hz
Alarm relay                                                                   Single pole single throw relay, volt-free; maximum switching capacity (resistive load only) 1 A/24 VDC, 1 A/24 VAC
Circuit breaker                                                             30 A maximum
Ground fault                                                                 30 mA, complies with UL 1053 standard
Real time clock                                                            Automatic daylight saving time and leap year correction
Clock accuracy                                                            +/-10 minutes per year
Keylock                                                                        Password protection for parameter settings
USB port                                                                      For pre-setup in power off mode; for firmware upgrades 


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General Insulation Company Inc. is an insulation supplier / insulation distributor that stocks and fabricates a wide variety of industrial and commercial air barrier, vapor barrier, moisture and water barrier products for the construction market.

nVent RAYCHEM 460 Technical Data Sheet