Eaton SBN-508 Instructions For Installation, Operation And Maintenance

Also see for Magnum SB Series: Technical product guide

Contents

12Instructions for Installation, OperatiMaintenance of Magnum SB InsulatedLow V oltage Power Circuit BreakeEATON CORPORATION www.eaton.comInstructional Leaflet IB2C12063H03Effective March 2012CAUTIONDO NOT DISABLE REJECTION INTERLOCKS. DOING SO AND USINGA LOWER CAPACITY CIRCUIT BREAKER IN AN INCOMPATIBLECASSETTE COULD RESULT IN AN ELECTRICAL FAULT WHICH COULDRESULT IN DEATH, BODILY INJURY AND/OR EQUIPMENT DAMAGE.The rejection interlocks are steel pins in the floor of the circuitbreaker cassette As the circuit breaker is pushed into thestructure, the mating pins on the bottom of the circuit breakermove past a set of corresponding pins in the cassette, ifthe circuit breaker and cassette are compatible If the circuitbreaker and the cassette are mismatched, the rejection pinswill block the insertion of the circuit breaker into the cassettebefore the levering-in mechanism is engagedBefore attempting to push the circuit breaker into theDISCONNECT position, compare the positioning of therejection interlock pins in the cassette in keeping with thoseoutlined in Table 1 of IL2C113863 (for MDN/SBN breakers)and/or Table 1 of IL2C15760 (for MDS/SBS breakers), andthe information supplied on the circuit breaker’s nameplateProceed if the circuit breaker and cassette are compatibleFrom Table 3, make apin location comparisonStop nuts should betorqued to 8-10 Ft -LbFigure 8. Cassette Rejection Interlock Pin Positioning/Installationfor Standard and Double-wide FramesTable 3. Rejection Interlock Pin Locations for Standard andDouble-wide FramesPin LocationsCell For 1 2 3 4 5 6 7 8SBS-508, 512, 516, 520 X X XSBS-608, 612, 616, 620 X X X XSBS-C08, C12, C16, C20 X X X X X XSBS-525 X X XSBS-625, 630, 632 X X X XSBS-C25, C30, C32 X X X X X XSBS-840 X X XSBS-84N X X XSBS-C40 X X X XSBS-C4N X X X XSBS-E40 X X X X XSBS-E4N X X X X XSBS-850, 860 X X XSBS-85N, 86N X X XSBS-C50, C60 X X X XSBS-C5N, C6N X X X XSBS-E50, E60 X X X X XSBS-E5N, E6N X X X X XTable 4. Rejection Interlock Bracket Bolt Locations for NarrowFramesBracket Bolt LocationsCell For A B C D ESBN-5 X XSBN-6 X XSBN-C X XFrom Table 4,make certain thetwo bolts arein the correctlocationsACD BEFigure 9. Cassette Rejection Interlock Bracket Location/ Installationfor Narrow Frames