Related Manuals for ABB TMAX XT XT2 THERMOMAGNETIC
Summary of Contents for ABB TMAX XT XT2 THERMOMAGNETIC
- Page 1 — INSTRUCTION HANDBOOK 1SDH002292A1001 - ECN000285442 TMAX XT XT2 THERMOMAGNETIC Disassembly instructions...
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Page 3: Safety Notes
Disassembly instruction tmaX Xt Xt2 tHermomaGnetic 1. SCOPE Scope of this document is to illustrate the step-by-step disassembly process of ABB SACE Tmax XT XT2 moulded case circuit breaker equipped with a thermomagnetic trip unit. Document is focused on Tmax XT XT2 3p IEC version, anyway it allows to cover other versions of Tmax XT XT2 circuit breaker equipped with a thermomagnetic trip unit with just few slight differences to be taken into account. -
Page 4: Disassembly Process
INSTRUCTION HANDBOOK 5. SEPARATE TREATMENT Table below lists parts requiring a separate treatment adding information about part location inside circuit breakers and related quantity. Description Position inside circuit breaker Quantity Cap kits In correspondence of circuit breaker connection terminals Cases for microswitches In the right hole of the circuit breaker Plug In the left hole of the circuit breaker... - Page 5 Disassembly instruction tmaX Xt Xt2 tHermomaGnetic 6.1 PHASE 1 – CAP KITS Tools Actions to be performed Allen key Insert the flat screwdriver as shown in the By means of the allen key remove the screws picture and push it up in order to remove the connected with the cap kits.
- Page 6 INSTRUCTION HANDBOOK 6.2 PHASE 2 – BREAKING PART FRONTAL Actions to be performed Tools Cross screwdriver By means of the cross screwdriver unscrew the By means of the cross screwdriver push the 2 screws fixing the braking part frontal to the trip test button.
- Page 7 Disassembly instruction tmaX Xt Xt2 tHermomaGnetic 6.3 PHASE 3 – TOGGLE AND ITS PROTECTION Actions to be performed Tools – Manually lift the toggle and its protection and after separate the toggle from its protection. Disassembled parts • 1 toggle (Plastic) • 1 toggle protection (Plastic)
- Page 8 INSTRUCTION HANDBOOK 6.4 PHASE 4 – TRIP UNIT Actions to be performed Tools Cross screwdriver By means of the cross screwdriver unscrew the Manually disassemble the transparent 2 screws fixing the trip unit frontal to the trip protection from the trip unit frontal. unit main structure.
- Page 9 Disassembly instruction tmaX Xt Xt2 tHermomaGnetic 6.5 PHASE 5 – PLASTIC PARTS MOUNTED ON THE BREAKING PART Actions to be performed Tools Flat screwdriver Manually slightly push the 2 flaps present on By means of the flat screwdriver lift the plug...
- Page 10 INSTRUCTION HANDBOOK 6.6 PHASE 6 – REAR COVER Actions to be performed Tools Cross screwdriver By means of the cross screwdriver unscrew the Manually remove the rear cover. 2 screws fixing the rear cover to the breaking part. Disassembled parts • 2 screws (Metal) • 1 rear cover (Plastic)
- Page 11 Disassembly instruction tmaX Xt Xt2 tHermomaGnetic 6.7 PHASE 7 – OPERATING MECHANISM AND TRIPPING SHAFT Actions to be performed Tools Torx key By means of the torx key (size 20) unscrew By means of the torx key (size 8) unscrew the 4...
- Page 12 INSTRUCTION HANDBOOK By means of the pliers remove the spring Manually remove the tripping shaft from the mounted in the middle of the operating operating mechanism pulling it as indicated by mechanism. the arrow. By means of the flat screwdriver remove the By means of the flat screwdriver and by means metal plate mounted on the tripping shaft.
- Page 13 Disassembly instruction tmaX Xt Xt2 tHermomaGnetic 6.8 PHASE 8 – BREAKING PART COVER AND CONNECTED PARTS Actions to be performed Tools Flat screwdriver Manually lift the breaking part cover. By means of the flat screwdriver push down the block lever located between the hole...
- Page 14 INSTRUCTION HANDBOOK By means of the flat screwdriver slightly push By means of the flat screwdriver remove the on the right the trip lever mounted in the 3 plugs located in the bottom part of the bottom part of the breaking part and then lift breaking part.
- Page 15 Disassembly instruction tmaX Xt Xt2 tHermomaGnetic By means of the flat screwdriver lift the open/ close lever and after manually complete the removal of the open/close lever. Disassembled parts • 1 breaking part cover (Plastic) • 1 block lever (Metal) • 1 motor operator lever (Metal) • 1 hood (Rubber) • 1 trip lever (Plastic) SEPARATE TREATMENT (Thermoplastics containing brominated flame retardants) • 3 plugs (Rubber) • 3 screws (Metal) • 3 plastic parts constituting terminals connections (Plastic) • 3 + 3 metal parts constituting terminals connections (Metal) • 1 open/close lever (Plastic) SEPARATE TREATMENT...
- Page 16 INSTRUCTION HANDBOOK 6.9 PHASE 9 – MOVING CONTACTS AND ARCHING CHAMBERS Tools Actions to be performed Flat screwdriver Manually lift the moving contacts assembly Manually remove the arching chambers from together with the arching chambers connected the lower moving contacts. with the lower part of the moving contacts assembly.
- Page 17 Disassembly instruction tmaX Xt Xt2 tHermomaGnetic 6.10 PHASE 10 – FIXED CONTACTS Tools Actions to be performed Cross screwdriver By means of the cross screwdriver unscrew By means of the cross screwdriver unscrew the 3 screws located in the back part of the other the 3 screws located in the back part of breaking part base.
- Page 18 INSTRUCTION HANDBOOK By means of the flat screwdriver remove the metal plate mounted on the the plastic part constituting the fixed contacts. Disassembled parts • 1 breaking part base (Plastic) • 3 + 3 screws (Metal) • 3 plastic parts costituting fixed contacts (Plastic) • 3 metal parts costituting fixed contacts (Metal) • 3 plates (Metal)
- Page 19 Disassembly instruction tmaX Xt Xt2 tHermomaGnetic 6.11 PHASE 11 – TRIP UNIT COVER AND I3 ASSEMBLY Tools Actions to be performed Cross screwdriver By means of the cross screwdriver unscrew the By means of the torx key unscrew the 4 screws 3 screws fixing the trip unit cover to the trip fixing the trip unit cover to the trip unit.
- Page 20 INSTRUCTION HANDBOOK By means of the flat screwdriver lift the top cover of the trip unit and manually complete the removal. Disassembled parts • 3 + 4 + 3 screws (Metal) • 3 springs (Metal) • 3 I3 groups (Metal) • 3 I3 supports (Plastic) • 1 trip unit cover (Plastic and Metal)
- Page 21 Disassembly instruction tmaX Xt Xt2 tHermomaGnetic 6.12 PHASE 12 – THERMAL/MAGNETIC GROUPS Tools Actions to be performed Cross screwdriver By means of the cross screwdriver unscrew the Manually lift the thermal/magnetic groups. 3 screws located in the back part of the trip unit. Disassembled parts • 3 screws (Metal)
- Page 22 INSTRUCTION HANDBOOK 6.13 PHASE 13 – TRIP UNIT Actions to be performed Tools Flat screwdriver Manually lift the thermal shaft. By gravity let the rod present in the thermal shaft come out. Pliers Torx key No. 8 By means of the flat screwdriver remove the 2 By means of the pliers unhook the 3 springs trimmers located on the trip unit front.
- Page 23 Disassembly instruction tmaX Xt Xt2 tHermomaGnetic by means of the pliers complete the removal of Manually remove the plastic lever located the pin. between the central and the right pole. Manually remove the spring located between By means of the pliers remove the spring the central and the right pole and its plug.
- Page 24 INSTRUCTION HANDBOOK Manually lift the shaft in order to disassemble By gravity let the screws fall from the plastic the plastic supports. supports. By means of the flat screw driver lift the By means of the pliers remove the 3 springs. magnetic shaft.
- Page 25 Disassembly instruction tmaX Xt Xt2 tHermomaGnetic Disassembled parts • 1 thermal shaft (Plastic) • 1 rod (Metal) • 2 trimmers (Plastic) SEPARATE TREATMENT (Thermoplastics containing brominated flame retardants) • 3 + 1 + 1 + 1 springs (Metal) • 3 moving armatures (Metal) • 1 pin (Metal) • 1 plug (Metal) • 1 lever (Plastic) SEPARATE TREATMENT (Thermoplastics containing brominated flame retardants) • 1 shaft (Plastic) SEPARATE TREATMENT (Thermoplastics containing brominated flame retardants) • 2 supports (Plastic) • 2 screws (Metal)
- Page 26 INSTRUCTION HANDBOOK...
- Page 27 Disassembly instruction tmaX Xt Xt2 tHermomaGnetic...
- Page 28 — 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 © Copyright 2022 ABB. All rights reserved. Specifications subject to change without notice.