ABB Tmax XT XT3, Disassembly Instructions Manual

 3

Disassembly instruction tmaX Xt Xt3

1. SCOPE

Scope of this document is to illustrate the step-by-step disassembly process of ABB SACE Tmax XT XT3 
moulded case circuit breaker.
Document is focused on Tmax XT XT3 3p IEC version, anyway it allows to cover other versions of Tmax 
XT XT3 circuit breaker with just few slight differences to be taken into account.

Gloves

Glasses

Safety shoes                            Protective clothes

4. TOOLS

Disassembly operations require the use of tools (e.g. screwdriver, torx key, pliers, …); tools to be used 
are specified inside each phase of the disassembly process (see Chapter 6).

3. PERSONAL PROTECTIVE EQUIMENT (PPE)

When performing disassembly, following safety Personal Protective Equipment (PPE) must 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) and having a detailed knowledge of 
circuit breakers.
Disassembly activites must be performed in an ergonomic workspace able to ensure protection of per-
sons demanded to perform disassembly activities.
Applicable national legislation and international standards in force at the time of disassembly of circuit 
breakers must be taken into account in addition to prescriptions illustrated in this document.
ABB declines any responsibility for injury to people or damage to property resulting from a failure to 
comply with the instructions set out in this document and with any applicable safety standard.