Magnum
8
1812.900A
1.4 Safe
practices
To protect personnel associated with the installation,
operation and maintenance of this equipment, the
following practices must be followed:
1.
Only qualified electrical personnel familiar with
the equipment, its operation and the associated
hazards should be permitted to work on the
equipment. Additionally, only qualified personnel
should be permitted to install or operate the
equipment.
2.
Always be certain that the primary and secondary
circuits are de-energized or the circuit breaker is
removed to a safe work location before
attempting any maintenance.
3.
For maximum safety, only insert a completely
assembled breaker into an energized cell.
4.
Always ensure that drawout circuit breakers are
in one of their designed cell positions, such as
Connect, Test, Disconnect or Remove. A circuit
breaker permitted to remain in an intermediate
position could result in control circuits being
improperly connected resulting in electrical
failures.
1.5 Qualified
personnel
For the purpose of operating and maintaining low voltage
power circuit breakers, a person should not be considered
qualified if the individual is not thoroughly trained in the
operation of the circuit breaker and how it interfaces with
the assembly in which it is used. In addition, the individual
should have knowledge of the connected loads.
For the purpose of installing and inspecting circuit
breakers and their associated assembly, a qualified
person should also be trained with respect to the hazards
inherent to working with electricity and the proper way to
perform such work. The individual should be able to de-
energize, clear and tag circuits in accordance with
established safety practices.
1.6
Other publications and documentation
In addition to this instruction manual, other printed
information and documentation is available and supplied
as appropriate. This additional information can include, but
not necessarily be limited to, an instruction manual for a
specific electronic trip unit, instruction leaflets for
accessory items, renewal parts information, necessary
dimensional drawings and a Product (application) Guide.
M W I
C 3 2
Circuit Breaker Type
Interrupting
Capacity
Frame Size
MWI - Standard and/or Double-
wide Frames
MWN - Narrow Frame
MWK - High Voltage (1100Vac )
Frame
2 - 25,000
4 - 40,000
5 - 50,000
6 - 65,000
8 - 85,000
C - 100,000
E - 150,000
08 - 800 Amps
12 - 1250 Amps
16 - 1600 Amps
20 - 2000 Amps
25 - 2500 Amps
32 - 3200 Amps
40, 41, 4N - 4000 Amps
50 , 5N - 5000 Amps
63, 6N - 6300 Amps
Figure1-3: Magnum Designation Example
