Table of Contents
Safety Precautions .................................................................................................... 1
Kit Components Table ............................................................................................... 2
Step 1: General Breaker Preparation ..................................................................... 3
Step 2: Removing the Original Components .......................................................... 4
Step 3: Installing the Copper Connectors............................................................... 4
Step 4: Installing the DTA Assembly....................................................................... 5
Step 5: Preparing the Trip Unit Assembly ............................................................... 7
Step 6: Installing the Trip Unit Assembly ................................................................ 8
Step 7: Connecting Sensor Harness and DTA Wires to the Aux. CT Module......... 9
Step 8: Connecting the PT Wires ......................................................................... 11
Step 9: Installing the Sensors............................................................................... 12
Step 10: Installing the Breaker Mounted CPT ........................................................ 13
Step 11: Final Wiring and Harness Connection ..................................................... 17
Step 12: Testing the Breaker .................................................................................. 18
Step 13: Mounting the Cell Harness....................................................................... 19
Step 14: Installing the Retrofitted Breaker in the Cell............................................. 19
Torque Values for Copper BUS Connectors ............................................................ 22
Torque Values for General Mounting ....................................................................... 23
IL 33-DB6-1
Digitrip Retrofit System for the
Westinghouse DB-25 Series Breakers
(Includes Single Position DB-25; Three Position, Spring Operated
DB-25; ElectricallyOperated DB-25; and DBL-25 Fused Models)
