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 1. Arc chute
2. Arc chute mounting bolts
3. Shims
4. Contact bolts
5. Primary contact fingers
6. Arcing contact fingers
7. Auxiliary blade
8. Buffer stop
9. Guide block
10. Arc chute mounting bolts
1. Arc chute mounting bolts
11. Primary contact blade
2. Upper terminal
12. Auxiliary contact blade
3. Shims
13. Pivot pin for auxiliary blade
4. Primary contacts
14. Auxiliary blade release hook
5. Contact bolts
15. Operating rod clevis pin
6. Arcing contact fingers
16. Hinge pin
7. Contact bolt
8. Movable arcing contact
Figure 3-4. Unit pole closing.
9. Tube spacer
10. Guide block
11. Buffer block bolts
12. Primary contact blades
Figure 3-5. Contact arrangement.
3-9
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