
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
Summary of Contents for UL 489
Page 36: ...5 21 Frame size II 3000 A Frame size III 1 Holes 14 mm 0720 1 0721_nu ...
Page 63: ...7 2 Horizontal connectors 0733_nu top view ...
Page 64: ...7 3 Rear vertical connectors 0734_nu top view rear view ...
Page 65: ...7 4 Front connectors 0736_nu front view top view ...
Page 66: ...7 5 Front connectors and pressure wire terminals 0737_nu top view front view ...
Page 67: ...7 6 7 2 Frame size II fixed mounted version 0494 3_nu ...
Page 68: ...7 7 Class C always 0494 5_nu top view rear view ...
Page 69: ...7 8 2500 0738_nu LH side view front view ...
Page 71: ...7 10 7 4 Frame size III fixed mounted version 0495 1_nu LH side view ...
Page 72: ...7 11 0495 2_nu top view top view ...
Page 73: ...7 12 0495 3_nu top view rear view ...
Page 75: ...7 14 7 5 Door cut outs fixed mounted circuit breaker Frame size I 0735_nu ...
Page 76: ...7 15 Frame size II III 0496_nu ...
Page 77: ...7 16 7 6 Frame size I draw out version 0745_nu ...
Page 78: ...7 17 0746_nu rear view top view ...
Page 79: ...7 18 0747_nu bottom view ...
Page 80: ...7 19 0748_nu ...
Page 81: ...7 20 0749_nu ...
Page 82: ...7 21 7 7 Frame size II draw out version 0490 1_ul ...
Page 86: ...7 25 7 8 Frame size III draw out version ...
Page 87: ...7 26 ...
Page 88: ...7 27 ...
Page 89: ...7 28 7 9 Door cut outs for draw out circuit breakers Frame size I 0750_nu ...
Page 91: ...7 30 7 11 External sensor for neutral conductor WLNCT2 ...
Page 92: ...7 31 WLNCT3 ...
Page 107: ...9 5 I tripping Ground fault tripping ...
Page 351: ......