User guide
Xenus XTL User Guide    Ordering Guide and Accessories 
Copley Controls Corp.  171 
F.5: Copley Standard Regen Resistor Specifications 
F.5.1: Specifications 
Specifications for Copley’s standard regen resistors are described below. 
Model Resistance Default 
Continuous Power 
Max 
Continuous 
Power 
Peak 
Power 
Peak 
Power 
Time 
For Use With 
XTL-RA-03  30 ohms  65 W  400 W  5 kW  1000 ms  XTL-230-18 
XTL-230-18-R 
XTL-230-18-S 
XTL-RA-04  15 ohms  65 W  400 W  10 kW  1000 ms  XTL-230-36 
XTL-230-36-R 
XTL-230-36-S 
XTL-230-40 
XTL-230-40-R 
XTL-230-40-S 
High Temperature Risk. 
!
WARNING 
Setting Default Continuous Power for a standard Copley regen resistor to a value greater 
than the default of 65 W may cause the resistor casing to heat to temperatures that could 
cause injury. If higher settings are required, contact Copley Controls customer support. 
Failure to heed this warning can cause equipment damage or injury. 
F.5.2: Dimensions 
The diagram below shows XTL-RA-03 and XTL-RA-04 mounting dimensions (in mm). 










