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IZM32 / IN32 low voltage air circuit breaker
MN013017EN May 2022 www.eaton.com
Instruction Manual MN013017EN
Purpose
This instruction booklet is expressly intended to cover
the installation, operation, and maintenance of IZM32 air
circuit breakers. These circuit breakers may be supplied as
part of complete switchboard assemblies or as separate
components. This booklet applies only to the circuit breaker
and (if drawout) its mating cassette. In the case of fixed
circuit breakers, certain sections of this leaflet, referring
to such items as position interlocks and the drawout
mechanism, will not apply.
Trip units associated with the IZM air circuit breakers will be
addressed in a general manner in this leaflet. Specific trip
unit details and time-current characteristic curves are
covered in separate documents specific to the trip units.
IZM circuit breaker accessory items are not discussed in
this leaflet. Field installation instructions for such items,
however, are covered in individual instruction leaflets
specific to the accessory.
This information is also available from the Eaton Web site at
www.eaton.com
For application information, consult Eaton or see applicable
Product Guides, Technical Documents, and Industry
Standards.
Safety
All safety codes, safety standards, and/or regulations
must be strictly observed in the installation, operation, and
maintenance of this equipment.
The warnings and cautions included as part of the
procedural steps in this leaflet are for personnel
safety and protection of equipment from damage.
An example of a typical warning label heading is
shown above to familiarize personnel with the style of
presentation. This will help to ensure that personnel
are alert to warnings. In addition, cautions are all
uppercase and boldface.
All possible contingencies that may arise during installation
operation or maintenance, and all details and variations
of this equipment, do not purport to be covered by these
instructions. If further information is desired by purchaser
regarding particular installation, operation, or maintenance
of particular equipment, contact the local Eaton
representative.
WARNING