CM-2201 Application Information
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©2015 Nelson Heat Tracing Systems
www.nelsonheaters.com GA2497 Rev. 2
2.0 General Application Information
The CM-2201 is designed to operate on input voltages
between 100 and 277 Vac and 50/60 Hz. Load switching is
handled by a 2-Pole solid-state relay and can control resis-
tive loads of 30A continuous @ 40°C ambient.
The CM-2201 is designed to control one heating circuit by
monitoring one or two temperature inputs via industry
standard 3-wire, 100Ω, Platinum RTDs. Two separate RTDs
may be utilized to customize the temperature control inputs.
Several different modes are user selectable as well as the
sensor failure operational mode.
The CM-2201 assembly is rated UL Type 4X (IP66) and can
be operated in temperatures of -40°F to +104°F (-40°C to
+40°C).
