GE Industrial Solutions AMC6QD, AMC4QD User Manual
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GEH5643 Installation Instructions R03
Spectra Series™ Power Panelboards
Circuit Breakers and Modules
WARNING: Danger of electrical shock or injury.
OFF
Turn
switchboard before workin
ment or removing any component. Do
e
not remove circuit
other component until the power is turned
OFF.
ower ahead of the panelboard or
inside the
rotective devices or an
General
These instructions apply to the following catalog numbers:
• Circuit breaker modules AMC6QD and AMC4QD
• Circuit breaker frames TQD and THQD
Installation
1. Phase balancing for two-pole devices in three-phase
systems. To balance the panelboard load, remove the
screws on the appropriate bus clip, reposition the bus
clip as shown in Figure 1, then install and tighten the
screws to 27–32 in-lb.
Protective Cap
or Insulating
Tape
Stud Post
Figure 2. Removing the caps or tape from the stud posts of the
breaker module.
#10-32 x 3/4"
Hex-Head
Screw
Filler
Support
A & C Phase
As Received
A & B Phase
B & C Phase
Figure 1. Repositioning the bus clip to balance the load.
2. Prepare the module. Remove the protective caps or
insulating tape only from the tops of the stud posts to
which the circuit breaker is to be attached, as shown
in Figure 2. Fasten the filler supports, as shown in
Figure 3, with #10-32 x
to 15–20 in-lb.
3
/4" hex-head screws tightened
Figure 3. Fastening the filler supports in position.
3. Install the circuit breaker. Place the ON side of the
breaker over the stud posts, as shown in Figure 4.
Fasten the breaker to the module with
screws with conical washers and #10-32 x 2
After all screws are in place, tighten the
to 40–50 in-lb and the #10-32 screws to 25–30 in-lb.
For double-branch devices, repeat this procedure for
the other breaker. Any combination of TQD or
THQD circuit breakers may be used.
1
/4-20 x 3/4"
3
/4" screws.
1
/4-20 screws
#10-32 Screw
pp
1
/4-20 Screw &
Conical Washer
Stud
Post
Filler
ort
Su
Latch
Latch Lock
Screw
Figure 4. Installing the breaker on the module.
4. Position the module. Loosen the latch lock screws and
fully retract the latches. Line up the guide fingers on
both ends of the module with the notches in the
panelboard interior rails, as shown in Figure 5. Allow
no space between units.
5. Install the module. Latch one side of the circuit
breaker module. Release the rail latch. Pivot the
module onto the bus bars and engage the second
latch. Release the rail latch. Tighten the rail latch
screws to 25 in.-lbs, as shown in Figure 6.
Figure 6. Installing the breaker module.
6. Wire the circuits. Refer to the label on the circuit
breaker for the proper tightening torque. levels
7. Filler plate kits. Install filler plate kits, as listed in
Table 1.
Filler Plate
Cat. No. Module Type
AFP3QDD AMC6QD
AFP2QDD AMC4QD
Table 1. Filler plate kit for each breaker module type.
Figure 5. Positioning the breaker module.
Latch
Latch Lock
Screw
Attention – Procedure for Aluminum
Terminations
1. Strip the insulation, being careful to not nick the wire.
2. Clean the wire strands with a wire brush.
3. Thoroughly coat the stripped conductor with a
suitable antioxidant compound, such as ALNOX or
PENETROX A13.
4. Insert the conductor and tighten the connector screw
to the torque indicated on the rating label.
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