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Table of Contents
SAFETY PRECAUTIONS................................................................................................................1
Kit Components List.........................................................................................................................2
Step 1: General Breaker Preparation............................................................................................3
Step 2: Removing the Original Electromechanical Trip Units........................................................3
Step 3: Preparing the Sensors......................................................................................................4
Step 4: Installing the Sensors........................................................................................................4
Step 5: Installing the Trip Unit Mounting Platform..........................................................................5
Step 6: Preparing the Trip Unit Assembly......................................................................................6
Step 7: Installing the Trip Unit........................................................................................................6
Step 8: Installing the Trip Finger....................................................................................................7
Step 9: Installing the Reset Arm Assembly...................................................................................7
Step 10: Installing the DTA Assembly.............................................................................................8
Step 11: Installing the 2-Point Terminal Block.................................................................................9
Step 12: Installing the Breaker Mounted CPT.................................................................................9
Step 13: Final Connection of the Harnesses and Wiring...............................................................11
Step 14: Installing the Auxiliary Switch..........................................................................................14
Step 15: Testing the Breaker.........................................................................................................15
Step 16: Mounting the Cell Harness.............................................................................................15
Step 17: Installing the Retrofitted Breaker in the Cell....................................................................16
Kit Parts List...................................................................................................................................17
Torque Values for General Mounting..............................................................................................21
Torque Values for Copper BUS Connectors...................................................................................21
INDEX............................................................................................................................................25
IL 33-DAH-1
Digitrip Retrofit System for
Westinghouse DA-75 Breakers