Installation Guide

nVent.com/RAYCHEM | 25
5 THERMOSTATS
• In temperature-sensitive applications, thermostatic control
may be necessary. If maximum temperature is a concern,
consult your nVent representative for design assistance.
• nVent RAYCHEM control and monitoring products are
designed for use with Self-Regulating and Power-Limiting
heat-tracing systems. Thermostats, controllers and control
and monitoring systems are available. Compare features of
these products in the table below. For additional information
on each product, refer to product datasheets or contact your
nVent representative.
• Follow the installation instructions supplied with the
thermostat. Use the proper wiring diagram for the heating
cable layout and control method desired.
Mechanical
Thermo-
stats
ETS-05 NGC-20 Elexant
40x0i
NGC-30 NGC-40
Control
Ambient
sensing
X X X X X X
Line sensing X X X X X X
Pasc X X X X
Monitoring
Ambient
temperature
X X X X X
Pipe
Temperature
X X X X X
Ground Fault X X X X
Current X X X X
Voltage X X X X
Location
Pipe mount X X X
Field Mount X X X X X
Substation X X X
• Controllers shall meet the requirements from clause 4.5.3 in
IEC/IEEE 60079-30-1.