8
Instructions for Installation, Operation and
Maintenance of Magnum SB Insulated Case
Low Voltage Power Circuit Breakers
EATON CORPORATION
www.eaton.com
Instructional Leaflet
IB2C12063H03
Effective March 2012
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 .
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 deenergize, clear and tag circuits in
accordance with established safety practices .
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 . Specific reference documents associated
with Magnum SB circuit breakers are listed in a separate
document entitled Engineering Data TD01301004E .
S B S C 3 0
Circuit Breaker
Type
SBS - Standard and
Double Wide Frames
SBN - Narrow Frame
Frame
Interrupting
Capacity
5 - 50,000
6 - 65,000
8 - 85,000
C - 100,000
E - 150,000
Frame Size
08 - 800 Amps
12 - 1200 Amps
16 - 1600 Amps
20 - 2000 Amps
25 - 2500 Amps
30 - 3000 Amps
40 - 4000 Amps
50 - 5000 Amps
Figure 3. Typical Magnum SB Designation Example
Section 2: Receiving, Handling And
Installation
General Information
Magnum SB Power Circuit Breakers, when supplied as part
of an assembly, may be shipped already installed in their
respective breaker compartments . Receiving and handling of
this equipment is addressed in an assembly instruction manual
supplied with the assembled equipment . This instruction
manual applies to only the circuit breakers .
Suggested Tools
A large number of different tools are not required to properly
install and maintain Magnum SB circuit breakers . The following
tools are, however, suggested:
•
Flat blade screwdriver
•
Phillips head screwdriver
•
3/8” socket (rachet) wrench
•
10 mm socket
•
17 mm socket
•
Secondary wiring removal tool
