COMPONENT – CIRCUIT BREAKERS AND METAL-CLAD SWITCHGEAR OVER 1000 VOLTS : USR, CNR – Component – Medium Voltage Metal-Clad Assemblies. Truck for PT/CPT, Cat. Nos. UPTR, followed by “-”, followed by 05 or 15, followed by PY, PD, CP, PS, PA or NPA, USR, CNR – Component – Medium Voltage Metal-Clad Assemblies. Cradle for PT/CPT Cat. Nos. UPCL, followed by “-”, followed by 05 or 15, followed by A or B, followed by 15, followed by A, B or C, USR, CNR – Component – Medium Voltage Metal-Clad Assemblies. Compartments for PT, Cat. Nos. UPCL, followed by “-”, followed by 05 or 15, followed by AL, AM, AF, AE, BC, BF, BE, NAL, NAM, NAF or NAE, followed by 25 or 32, followed by A, followed by 12 or 20.