Eaton MDS-608 - Inspection and Maintenance of Magnum Breakers; General Importance of Inspection and Maintenance; Items to Inspect on Magnum Breakers; Functional Field Testing Procedures

Instruction Book
Page vii
Effective: May 2006
I.B. 2C12060H08
For more information visit: www.EatonElectrical.com
Figure Title Page
3-39 Shunt Trip, Spring Release and Undervoltage Release Installed............................................................47
3-40 Auxiliary Switch (2A/2B)...........................................................................................................................48
3-41 Mechanical Trip Indicator with Associated Overcurrent Trip Switch ........................................................48
3-42 Motor Operator Kit ...................................................................................................................................49
3-43 Motor Operator Installed in Narrow Frame Circuit Breaker......................................................................49
3-44 Cover Mounted Key Lock and Operations Counter................................................................................. 50
3-45 Cassette Mounted Key Lock ....................................................................................................................50
3-46 ON-OFF Pushbutton Lockable Cover Plate.............................................................................................50
3-47 Safety Shutters in Closed Position...........................................................................................................51
3-48 Safety Shutters in Open Position .............................................................................................................51
3-49 Cell Switch (Drawout Position Indicator) Unmounted ..............................................................................51
3-50 Cell Switches Mounted on Cassette ........................................................................................................51
3-51 Door Escutcheon and Gasket ..................................................................................................................51
3-52 IP54 Waterproof Cover ............................................................................................................................52
3-53 Cassette-Mounted 2-Way Cable Interlock ...............................................................................................52
3-54 Magnum DSL Circuit Breaker (Side View)...............................................................................................53
3-55 Blow Fuse Indicator .................................................................................................................................53
4-1 Drawout Circuit Breaker in Cassette .......................................................................................................55
4-2 Drawout Circuit Breaker with Automatic Primary Disconnects ................................................................55
4-3 Drawout Cassette Features .....................................................................................................................56
4-4 Narrow Frame Cassette (Horizontal Terminals) ......................................................................................57
4-5 Standard Cassette (Vertical Terminals) ..................................................................................................57
4-6 Basic Cassette (Without Stabs) ...............................................................................................................57
4-7 Universal Cassette, 4-Pole (Flat Terminal Pads).....................................................................................57
4-8 Typical MDSL Standard Cassette (Front View) .......................................................................................58
4-9 Typical MDSL Standard Cassette (Rear View)........................................................................................58
5-1 Fixed Circuit Breaker with Available Vertical Adaptor..............................................................................59
6-1 Top Rear View of Circuit Breaker with One Arc Chute Removed............................................................62
6-2 Bottom View of Arc Chute........................................................................................................................62
6-3 Primary Contacts with Circuit Breaker Open (Not Used for Contact Wear Inspection) ...........................63
6-4 Contact Inspection Area with Circuit Breaker Open.................................................................................63
6-5 Use of Contact Wear Indicator with Circuit Breaker Closed ....................................................................64
6-6 Trip Unit Rating Plug Location .................................................................................................................64
6-7 Current Sensor Cover in Place Over Sensors .........................................................................................65
6-8 One Current Sensor Shown Removed and Disconnected.......................................................................65
6-9 MD Limiters Shown Mounted in Extension ..............................................................................................66
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