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IB 6.1.12.1-1C
INTRODUCTION ............................................................................................................. 5
Application ...............................................................................................................................................................5
Designation ...............................................................................................................................................................5
Safety Issues .............................................................................................................................................................5
Receiving, Handling, and Storage ..........................................................................................................................5
OPERATING FEATURES AND FUNCTION ................................................................... 7
Anti-pump Lockout Relay (EO) .............................................................................................................................7
Automatic Spring Discharge (EO) .........................................................................................................................7
Automatic Trip Indicator........................................................................................................................................7
Automatic Trip Alarm Contacts (Optional)..........................................................................................................7
Automatic Trip Lockout (Optional).......................................................................................................................7
Close Button (EO)....................................................................................................................................................7
Close Handle (MO)..................................................................................................................................................7
Close Lever (EO) .....................................................................................................................................................7
Contact Position Indicator ......................................................................................................................................7
Lifting Yoke (Optional)...........................................................................................................................................7
Locking Hasp ...........................................................................................................................................................7
Maintenance Handle (EO) ......................................................................................................................................8
Motor Disconnect Switch (EO)...............................................................................................................................8
Nameplate.................................................................................................................................................................8
Racking Mechanism ................................................................................................................................................8
Stored Energy Indicator (EO) ................................................................................................................................8
Trip Buttons .............................................................................................................................................................8
OPERATING DEVICES................................................................................................... 9
Auxiliary Switches ...................................................................................................................................................9
Control Relay Device...............................................................................................................................................9
Magnetic Latch Device ............................................................................................................................................9
Shunt Trip Device ....................................................................................................................................................9
Overcurrent Trip Devices .......................................................................................................................................9
Electromechanical Overcurrent Trip......................................................................................................................9
Solid-state Overcurrent Trip ..................................................................................................................................9
Microelectronic Overcurrent Trip..........................................................................................................................9
Undervoltage Trip Device (Optional) ..................................................................................................................10
CIRCUIT BREAKER OPERATION ............................................................................... 11
Racking ...................................................................................................................................................................11
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