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5 – 10
5.2
Main terminal connections
For main terminal dimensions of individual frame sizes, refer to:
Frame sizes / dimension drawings (page 7-1)
The main terminals and connectors are intended for busbar connection with NEMA hole patterns. The number and size of the busbars con-
nected to the circuit breaker must be selected per UL 891 in order to meet the design and test requirements according to UL 891 depending
on the rated current, defined by the rating plug. Different bussing in a given frame size may be applicable.
5.2.1
Cradle connections
1) The terminal permits the use of 2“ x ¼“ busbars.
2) The terminal permits the use of 4“ x ¼“ busbars.
5.2.2
Horizontal connections for fixed mount breakers
1) The terminal permits the use of 2“ x ¼“ busbars.
2) The terminal permits the use of 4“ x ¼“ busbars.
Drawout circuit breaker
Connections to Line/Load side cradle connectors
Frame Size
I
nmax
Number of available busbars
mounting positions
Busbar cross-section
Number of holes
I
800 A / 1200 A
1 - 3
4“ x ¼“
1)
4
II
800 A / 1200 A / 1600 A
1 - 3
4“ x ¼“
1)
4
2000 A
2 - 4
2500 A / 3000 A
3 - 5
III
4000 A / 5000 A
5 - 7
5“ x ¼“
2)
6
NOTICE
Equipment Damage.
Cables which are connected directly to the horizontal bus terminals using cable terminals can damage the circuit breaker when
short-circuit currents occur.
Always connect mechanical cable lugs to front connected bus terminals (
) or other type of properly braced
bus.
Fixed Mount circuit breaker
Connections to Line/Load side horizontal terminals
Frame Size
I
nmax
Number of available busbars
mounting positions
Busbar cross-section
Number of holes
I
800 A / 1200 A
1 - 4
3“ x ¼“
1)
2
II
800 A / 1200 A / 1600 A
1 - 4
4“ x ¼“
1)
3
2000 A
2500 A / 3000 A
III
4000 A / 5000 A
2 - 6
5“ x ¼“
2)
4
Содержание UL 489
Страница 36: ...5 21 Frame size II 3000 A Frame size III 1 Holes 14 mm 0720 1 0721_nu ...
Страница 63: ...7 2 Horizontal connectors 0733_nu top view ...
Страница 64: ...7 3 Rear vertical connectors 0734_nu top view rear view ...
Страница 65: ...7 4 Front connectors 0736_nu front view top view ...
Страница 66: ...7 5 Front connectors and pressure wire terminals 0737_nu top view front view ...
Страница 67: ...7 6 7 2 Frame size II fixed mounted version 0494 3_nu ...
Страница 68: ...7 7 Class C always 0494 5_nu top view rear view ...
Страница 69: ...7 8 2500 0738_nu LH side view front view ...
Страница 71: ...7 10 7 4 Frame size III fixed mounted version 0495 1_nu LH side view ...
Страница 72: ...7 11 0495 2_nu top view top view ...
Страница 73: ...7 12 0495 3_nu top view rear view ...
Страница 75: ...7 14 7 5 Door cut outs fixed mounted circuit breaker Frame size I 0735_nu ...
Страница 76: ...7 15 Frame size II III 0496_nu ...
Страница 77: ...7 16 7 6 Frame size I draw out version 0745_nu ...
Страница 78: ...7 17 0746_nu rear view top view ...
Страница 79: ...7 18 0747_nu bottom view ...
Страница 80: ...7 19 0748_nu ...
Страница 81: ...7 20 0749_nu ...
Страница 82: ...7 21 7 7 Frame size II draw out version 0490 1_ul ...
Страница 86: ...7 25 7 8 Frame size III draw out version ...
Страница 87: ...7 26 ...
Страница 88: ...7 27 ...
Страница 89: ...7 28 7 9 Door cut outs for draw out circuit breakers Frame size I 0750_nu ...
Страница 91: ...7 30 7 11 External sensor for neutral conductor WLNCT2 ...
Страница 92: ...7 31 WLNCT3 ...
Страница 107: ...9 5 I tripping Ground fault tripping ...
Страница 256: ...15 12 Installing FS II and FS III 1 Socket head cap screw M5 with washer and nut 1 2 3 4 6 5 7 8 Size 4 5 Nm 45 lb in ...
Страница 307: ...22 2 Installing the door sealing frame Not for use with fuse carriages Catalog No Door sealing frame WLDSF 1 2 3 ...
Страница 351: ......