Eaton MDN-408 Instructions For Installation, Operation And Maintenance

Instruction BookPage vEffective: May 2006I.B. 2C12060H08 For more information visit: www.EatonElectrical.comPAGE3-8 Accessory Devices ............................................................................................................................................463-8.1 Plug-In Electrical Accessories ..............................................................................................................463-8.2 Internal Electrical Accessories .............................................................................................................483-8.3 Mechanical Accessories.......................................................................................................................503-9 MDSL Limiters/Blown Limiter Indication............................................................................................................533-9.1 MDSL Current Limiters.........................................................................................................................533-9.2 Blown Limiter Sensing..........................................................................................................................53SECTION 4: DRAWOUT CIRCUIT BREAKER AND CASSETTE4-1 General .............................................................................................................................................................554-1.1 Drawout Cassette.................................................................................................................................554-2 Drawout Circuit Breaker Dimensions ................................................................................................................574-3 Drawout Cassette Dimensions ..........................................................................................................................57SECTION 5: FIXED CIRCUIT BREAKER5-1 General .............................................................................................................................................................595-2 Fixed Circuit Breaker Dimensions .....................................................................................................................59SECTION 6: INSPECTION AND MAINTENANCE6-1 General .............................................................................................................................................................606-2 General Cleaning Recommendations ...............................................................................................................606-3 When to Inspect ................................................................................................................................................606-4 What to Inspect .................................................................................................................................................616-4.1 Functional Field Testing .......................................................................................................................616-4.2 Arc Chute Inspection ............................................................................................................................626-4.3 Primary Contact Inspection ..................................................................................................................636-5 Circuit Breaker Modifications and Changes ......................................................................................................646-5.1 Rating Plug Replacement.....................................................................................................................646-5.2 Current Sensor Replacement...............................................................................................................656-5.3 Current Limiter Replacement (MDSL) ..................................................................................................666-5.3.1 Replacing Type MA and MB Current Limiters ......................................................................................556-5.3.2 Replacing Type MD Current Limiters ...................................................................................................666-5.3.3 Replacing Type MD Current Limiters on MDSL20 Breakers................................................................66SECTION 7: TROUBLESHOOTING7-1 Introduction........................................................................................................................................................67SECTION 8: RENEWAL PARTS8-1 General .............................................................................................................................................................70www . ElectricalPartManuals . com