Eaton Magnum SB Series - Page 4

4
Instructions for Installation, Operation and
Maintenance of Magnum SB Insulated Case
Low Voltage Power Circuit Breakers
EATON CORPORATION www.eaton.com
Instructional Leaet IB2C12063H03
Effective March 2012
Figures Page
Figure 57. Connection Diagram for SBSE Double-wide Frame
with Digitrip 520 and 520M with AABBCC Configuration . 45
Figure 58. Connection Diagram for SBSE Double-wide Frame
with Digitrip 520MC with AABBCC Configuration ......46
Figure 59. Connection Diagram for SBSE Double-wide Frame
with Digitrip 1150 with AABBCC Configuration ......... 47
Figure. 60. Through-the-Window Electrical Accessories ..48
Figure 61. Shunt Trip with Cutoff Switch ..............48
Figure 62. Shunt Trip Switch Installed ................48
Figure 63. Spring Release with Optional Latch Check Switch . 49
Figure 64. Undervoltage Release Device ..............49
Figure 65. Shunt Trip, Spring Release and Undervoltage
Release Installed ................................49
Figure 66. Auxiliary Switch (2A/2B) ..................50
Figure 67. Mechanical Trip Indicator with Associated
Overcurrent Trip Switch ...........................50
Figure 68. Motor Operator Kit ......................51
Figure 69. Motor Operator Installed in Narrow Frame
Circuit Breaker ..................................51
Figure 70. Cover Mounted Key Lock and Operations Counter . 51
Figure 71. Cassette Mounted Key Lock ............... 52
Figure 72. ON-OFF Pushbutton Lockable Cover Plate ...52
Figure 73. Typical Safety Shutters in Closed Position ....53
Figure 74. Typical Safety Shutters in Open Position .....53
Figure 75. Cell Switch (Drawout Position Indicator)
Unmounted ...................................53
Figure 76. Cell Switches Mounted on Cassette ........53
Figure 77. Door Escutcheon and Gasket ..............54
Figure 78. IP54 Waterproof Cover ...................54
Figure 79 Cassette-Mounted 2-Way Cable Interlock .....54
Figure 80. Drawout Circuit Breaker in Cassette ........55
Figure 81. Drawout Circuit Breaker with Automatic
Primary Disconnects .............................55
Figure 82. Typical Drawout Cassette Features .........56
Figure 83. Typical Narrow Frame Cassette
(Horizontal Terminals) .............................57
Figure 84. Typical Basic Cassette (Without Stabs) ......57
Figure 85. Typical Standard Cassette (Vertical Terminals) . 57
Figure 86. Typical Universal Cassette, 4-Pole
(Flat Terminal Pads) ...............................57
Figure 87. Fixed Circuit Breaker with Available
Vertical Adaptor .................................58
Figure 88. Nameplate SB .........................60
Figure 89. Top Rear View of Circuit Breaker with One
Arc Chute Removed .............................61
Figures Page
Figure 90. Bottom View of Arc Chute ................62
Figure 91. Primary Contacts with Circuit Breaker Open
(Not Used for Contact Wear Inspection) ..............62
Figure 92. Contact Inspection Area with Circuit
Breaker Open ..................................62
Figure 93. Use of Contact Wear Indicator with Circuit
Breaker Closed .................................63
Figure 94. Magnum DS Lubrication .................64
Figure 95. Magnum DS Lubrication .................64
Figure 96. Magnum DS Lubrication (Not applicable
to Fixed-Mount Breakers) .........................65
Figure 97. Magnum DS Lubrication ..................65
Figure 98. Magnum DS Lubrication .................65
Figure 99. Magnum DS Lubrication .................65
Figure 100. Magnum DS Lubrication—Levering-in
Mechanism ...................................66
Figure 101. Magnum DS Lubrication—Levering-in
Mechanism ...................................66
Figure 102. Trip Unit Rating Plug Location ............. 66
Figure 103. Current Sensor Cover in Place Over Sensors . 67
Figure 104. One Current Sensor Shown Removed and
Disconnected ...................................67
Table Title Page
Table 1. Magnum SB Ratings .......................7
Table 2. Basic Circuit Breaker Weights ............... 10
Table 3. Rejection Interlock Pin Locations for Standard
and Double-wide Frames ..........................12
Table 4. Rejection Interlock Bracket Bolt Locations
for Narrow Frames ...............................12
Table 5. Magnum Digitrip Trip Units .................25
Table 6. Magnum SB Current Sensors and Matching
Rating Plugs ...................................27
Table 7. Shunt Trip Ratings .........................48
Table 8. Spring Release Ratings ....................49
Table 9. Auxiliary Switch, Overcurrent Trip Switch and
Cell Switch Contact Ratings .......................50
Table 10. Undervoltage Release ....................50
Table 11. Motor Operator ..........................51
Table 12. Inspection Frequency .....................59
Table 13. Field Service Tool List ..................... 60
Table 14. Magnum Breaker Torque List ...............64
Table 15. Greases Used on Magnum ................64
Table 16. Circuit Breaker Troubleshooting Guide ........68