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ABB Sace TMAX XT XT4 ELECTRONIC, Disassembly Instructions Manual

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ABB Sace TMAX XT XT4 ELECTRONIC Disassembly Instructions Manual Download Page 6

6

INSTRUCTION HANDBOOK

Tools

Cross screwdriver

6.2 PHASE 2 – BREAKING PART FRONTAL

3

 

By means of the cross screwdriver unscrew 

the 2 screws located in the upper part of the 

breaking part frontal fixing the breaking part 

frontal to the circuit breaker main structure. 

5

 

By means of the cross screwdriver push the 

trip test button. 

6

 

Manually lift a little bit the breaking part 

frontal and complete the removal pulling the 

breaking part frontal as indicated by the arrow. 

4

By means of the cross screwdriver unscrew 
the 2 screws located in the lower part of the 
breaking part frontal fixing the breaking part 
frontal to the circuit breaker main structure*.

Actions to be performed

*  Applicable to circuit breakers with V and X breaking 

capacities only.

Flat screwdriver

Flat screwdriver

Summary of Contents for Sace TMAX XT XT4 ELECTRONIC

Page 1: ... INSTRUCTION HANDBOOK 1SDH002295A1001 ECN000285442 TMAX XT XT4 THERMOMAGNETIC Disassembly instructions ...

Page 2: ......

Page 3: ... be worn 2 SAFETY NOTES Before proceeding with any disassembly operation it s mandatory to put the circuit breaker in open position Disassembly operations of circuit breakers must be performed by qualified and skilled personnel in the electrical field IEV 195 04 01 person with relevant education and experience to enable him or her to perceive risks and to avoid hazards which electricity can create...

Page 4: ...aker 1 Case side protections Mounted on the breaking part 2 Trimmers Mounted on trip unit front 2 Magnetic shaft In the trip unit 1 6 DISASSEMBLY PROCESS Circuit breakers disassembly process is constituted by a sequence of operations to be performed on products after their dismounting from original installation For each phase following information are provided Part parts to be disassembled title o...

Page 5: ... Plastic and Metal SEPARATE TREATMENT Thermoplastics containing brominated flame retardants 6 1 PHASE 1 CAP KITS 1 By means of the allen key remove the screws connected with the cap kits 2 Insert the flat screwdriver as shown in Picture 2 and push it up in order to remove the cap kits Actions to be performed Disassembled parts 6mm ...

Page 6: ... screwdriver push the trip test button 6 Manually lift a little bit the breaking part frontal and complete the removal pulling the breaking part frontal as indicated by the arrow 4 By means of the cross screwdriver unscrew the 2 screws located in the lower part of the breaking part frontal fixing the breaking part frontal to the circuit breaker main structure Actions to be performed Applicable to ...

Page 7: ...instruction TMAX XT XT4 THERMOMAGNETIC 7 By means of the flat screwdriver push up the reset test rod and manually remove it Disassembled parts 2 2 screws Metal 1 breaking part frontal Plastic 1 reset test rod Plastic ...

Page 8: ... 3 PHASE 3 TOGGLE AND ITS PROTECTION 8 Manually lift the toggle and its protection and after separate the toggle from its protection Actions to be performed Disassembled parts 1 toggle Plastic 1 toggle protection Plastic Tools ...

Page 9: ... part 10 Manually disasseble the transparent protection from the trip unit frontal 12 Manually slightly pull the trip unit as indicated by the arrow and after lift the trip unit in order to complete the removal Actions to be performed Tools Cross screwdriver Torx key No 15 Disassembled parts 2 screws Metal 1 trip unit frontal Plastic 1 trip unit transparent protection Plastic 1 trip unit Plastic a...

Page 10: ... screwdriver lift the plug located in the left hole of the breaking part and after manually complete the removal of the plug 16 By means of the flat screwdriver lift the white plastic lever located in the upper part of the breaking part and after manually complete the removal of the white plastic lever Actions to be performed Flat screwdriver Disassembled parts 5 cases for microswitches Plastic SE...

Page 11: ...6 PHASE 6 REAR COVER 17 By means of the cross screwdriver unscrew the 2 screws fixing the rear cover to the breaking part 18 Manually remove the rear cover Actions to be performed Disassembled parts 2 screws Metal 1 rear cover Plastic Cross screwdriver Tools ...

Page 12: ...d 19 By means of the torx key size 20 unscrew the 4 screws located in the back part of the breaking part 20 By means of the flat screwdriver unhook the 2 springs mounted on the operating mechanism 22 By means of the pliers remove the spring mounted in the middle of the operating mechanism 21 Manually lift the operating mechanism and remove it ...

Page 13: ...e operating mechanism pulling it as indicated by the arrow 24 By means of the flat screwdriver remove the metal plate mounted on the tripping shaft Disassembled parts 4 screws Metal 1 operating mechanism Plastic and Metal SEPARATE TREATMENT Thermoplastics containing brominated flame retardants 1 2 springs Metal 1 tripping shaft Plastic SEPARATE TREATMENT Thermoplastics containing brominated flame ...

Page 14: ...he breaking part cover 28 Manually lift the breaking part cover 27 By means of the cross screwdriver uncrew the 6 screws fixing the breaking part cover to the breaking part base 29 Manually lift the motor operator lever located between the hole previously hosting the operating mechanism and after complete removal operation Torx key No 8 For circuit breakers with N S H and L breaking capacities tor...

Page 15: ...m part of the breaking part 31 By means of the flat screwdriver slightly push on the right the the trip lever mounted in the bottom part of the breaking part and then lift the lever in order to complete the removal 33 By means of the cross screwdriver unscrew the 3 screws located in the bottom part of the breaking part the terminals connections between the breaking part and the trip unit will fall...

Page 16: ...emove the metal plate from the plastic part constituting terminals connections Disassembled parts 2 6 3 screws Metal 1 breaking part cover Plastic 1 motor operator lever Metal 1 hood Rubber 1 trip lever Plastic SEPARATE TREATMENT Thermoplastics containing brominated flame retardants 3 plugs Rubber 3 terminals connections Plastic and Metal 1 open close lever Plastic SEPARATE TREATMENT Thermoplastic...

Page 17: ...mounted on the moving contacts assembly 38 Manually lift the moving contacts assembly 40 By means of the pliers remove the 2 plugs mounted on the breaking part base 6 9 PHASE 9 MOVING CONTACTS AND ARCHING CHAMBERS Actions to be performed Tools Flat screwdriver Pliers Applicable to circuit breakers with V and X breaking capacities only ...

Page 18: ...r supports Disassembled parts Note Arching chambers of circuit breakers with N S H and L breaking capacities are made by an unique assembly and by means of a flat screwdriver plates can be removed from the arching chamber case 1 block lever Metal 1 moving contacts assembly Plastic and Metal 4 plugs Plastic 6 arching chambers Plastic and Metal 6 arching chambers supports Plastic and Metal ...

Page 19: ...f the breaking part base 45 Manually separate the plastic part from the metal part constituting the fixed contacts 44 Manually push the fixed contacts as indicated by the arrow 46 By means of the flat screwdriver remove the metal plate mounted on the the plastic part constituting the fixed contacts Torx key No 20 To unscrew the 3 bottom screws mounted on circuit breakers with breaking capacities N...

Page 20: ...val of the case side protections Disassembled parts Applicable to circuit breakers with V and X breaking capacities only Applicable to circuit breakers with V and X breaking capacities only 1 breaking part base Plastic 6 2 screws Metal 3 fixed contacts Plastic and Metal 3 plates Metal 2 case side protections Plastic SEPARATE TREATMENT Thermoplastics containing brominated flame retardants ...

Page 21: ...rip unit 51 Manually push the 3 I3 assemblies as indicated by the arrow 50 By means of the torx key unscrew the 5 screws fixing the trip unit cover to the trip unit 52 By means of the pliers remove the spring mounted on the I3 assembly 53 Manually separate the I3 support and the I3 group 54 Manually remove the 3 screws located on the top of the trip unit Tools Flat screwdriver Pliers Torx key No 8...

Page 22: ... means of the flat screwdriver lift the top cover of the trip unit and manually complete the removal Disassembled parts 3 5 3 screws Metal 3 springs Metal 3 I3 groups Metal 3 I3 supports Plastic 1 trip unit cover Plastic and Metal ...

Page 23: ...12 THERMAL MAGNETIC GROUPS Actions to be performed 56 Manually remove the shell mounted over the thermal magnetic groups 58 By means of the cross screwdriver unscrew the 3 screws located in the back part of the trip unit 57 By means of the flat screwdriver separate the shells from the fixed core 59 Manually lift the thermal magnetic groups Tools Cross screwdriver Flat screwdriver ...

Page 24: ... 62 Manually remove the pin mounted behind the lever and spring removed at previous steps 64 Manually lift the thermal shaft 61 Manually remove the spring 63 Manually lift the spring guide rod and the spring mounted behind it manually separate the 2 parts 65 By means of the flat screwdriver remove the 2 trimmers located on the trip unit front ...

Page 25: ...g the supports to the trip unit case 70 By means of the pliers remove the spring mounted between the left and the central pole 67 By means of the pliers lift the moving armatures located in each pole and after manually complete the removal of the moving armatures 69 By gravity let the screw come out from the support 71 By means of the flat screwdriver lift the magnetic shaft ...

Page 26: ...ic 1 1 3 1 springs Metal 1 pin Metal 1 spring guide rod Plastic 2 supports Plastic 2 screws Metal 1 thermal shaft Plastic 2 trimmers Plastic SEPARATE TREATMENT Thermoplastics containing brominated flame retardants 3 moving armatures Metal 1 magnetic shaft Plastic SEPARATE TREATMENT Thermoplastics containing brominated flame retardants 1 test button Plastic 1 trip unit base Plastic ...

Page 27: ...ction TMAX XT XT4 THERMOMAGNETIC 7 ENERGY CONSUMPTION FOR CIRCUIT BREAKERS DISASSEMBLY Since all disassembly operations illustrated in this document are manual the CO2 equivalent emissions can be considered null negligible ...

Page 28: ... Copyright 2022 ABB All rights reserved Specifications subject to change without notice ABB SACE A division of ABB S p A L V Breakers Via Pescaria 5 24123 Bergamo Italy Phone 39 035 395 111 Fax 39 035 395 306 433 abb it lowvoltage ...

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