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12 – 8
12.8.1
MOC Versions
The MOC device may be ordered in two versions for drawout circuit breakers:
The auxiliary contacts, in the “Connect Only” version of the MOC, only change state when the circuit breaker is opened/closed while it
is in the “CONNECTED” position within the circuit breaker compartment. There are two distinct models of the “Connect Only” MOC, one
for circuit breaker frame size 2 (WLMOCC) and a second for circuit breaker frame size 3 (WLMOCC3).
The second version is known as the “Test and Connect” version. In the “Test and Connect” version, the auxiliary contacts change state
when the circuit breaker is opened/closed while it is in the “TEST” or “CONNECTED” positions within the circuit breaker compartment.
Like the “Connect Only” version, there are two distinct models of the “connect only” MOC, one for circuit breaker frame size 2 (WLMOC)
and a second for circuit breaker frame size 3 (WLMOC3).
12.8.2
MOC Installation Instructions
There are two MOC versions available: with and without a driver for the test position. The version with only one drive is generally used for
fixed-mounted circuit breakers.
- OPEN the circuit breaker and discharge the closing spring
- Remove circuit breaker from cradle
12.8.2.1 Installing the coupler
In order to interface the MOC assembly (mounted in the circuit breaker compartment), the circuit breaker must be outfitted with a
coupler (see Figure 1).
In order to install the coupler, the clear plastic plug in the sidewall of the circuit breaker (see Figure 2) must first be removed.
Facing the breaker, the plug is on right sidewall. This is easily accomplished by levering with a small screwdriver.
DANGER
Hazardous voltage.
Will cause death, serious personal injury, or equipment damage.
Turn off and lock out all power supplying this equipment before working on this device.
Figure 1
Figure 2
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: ......