Eaton MDN-408 Instructions For Installation, Operation And Maintenance page 5

3-8 Accessory Devices ............................................................................................................................................46
3-8.1 Plug-In Electrical Accessories ..............................................................................................................46
3-8.2 Internal Electrical Accessories .............................................................................................................48
3-8.3 Mechanical Accessories.......................................................................................................................50
3-9 MDSL Limiters/Blown Limiter Indication............................................................................................................53
3-9.1 MDSL Current Limiters .........................................................................................................................53
3-9.2 Blown Limiter Sensing..........................................................................................................................53
SECTION 4: DRAWOUT CIRCUIT BREAKER AND CASSETTE
4-1 General .............................................................................................................................................................55
4-1.1 Drawout Cassette.................................................................................................................................55
4-2 Drawout Circuit Breaker Dimensions ................................................................................................................57
4-3 Drawout Cassette Dimensions ..........................................................................................................................57
SECTION 5: FIXED CIRCUIT BREAKER
5-1 General .............................................................................................................................................................59
5-2 Fixed Circuit Breaker Dimensions .....................................................................................................................59
SECTION 6: INSPECTION AND MAINTENANCE
6-1 General .............................................................................................................................................................60
6-2 General Cleaning Recommendations ...............................................................................................................60
6-3 When to Inspect ................................................................................................................................................60
6-4 What to Inspect .................................................................................................................................................61
6-4.1 Functional Field Testing .......................................................................................................................61
6-4.2 Arc Chute Inspection ............................................................................................................................62
6-4.3 Primary Contact Inspection ..................................................................................................................63
6-5 Circuit Breaker Modifications and Changes ......................................................................................................64
6-5.1 Rating Plug Replacement.....................................................................................................................64
6-5.2 Current Sensor Replacement...............................................................................................................65
6-5.3 Current Limiter Replacement (MDSL) ..................................................................................................66
6-5.3.1 Replacing Type MA and MB Current Limiters ......................................................................................55
6-5.3.2 Replacing Type MD Current Limiters ...................................................................................................66
6-5.3.3 Replacing Type MD Current Limiters on MDSL20 Breakers................................................................66
SECTION 7: TROUBLESHOOTING
7-1 Introduction........................................................................................................................................................67
SECTION 8: RENEWAL PARTS
8-1 General .............................................................................................................................................................70
I.B. 2C12060H08
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Instruction Book
Effective: May 2006 Page v
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