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DEH40158 |
g |
A-Series ® II Panelboards |
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AD/AE/AQ Type P & N Panel |
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THQB Three-Phase Circuit |
Introduction |
Breaker Kits |
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These instructions describe the installation of THQB three-phase circuit breaker kit into an A-Series® II panelboard. These kits are for use in panelboards ordered with UnSpecified Space.
The catalog number for 6-pole THQB breaker kit is ASPP6QB6D |
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Parts List ASPP6QB6D |
Table 1 |
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ITEM # |
DESCRIPTION |
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PART # |
QTY |
1 |
A & C PHASE 200A STRAP |
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315A7049P10 |
2 |
2 |
STRAP, CENTER |
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315A7048P20 |
1 |
3 |
3X BRANCH BASE |
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911E347P3 |
1 |
4 |
THREAD ROLLING SCREW & WASHER |
315A7034P6 |
3 |
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5 |
FILLER PLATE, QB |
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139C5362P2 |
1 |
6 |
SCREWS , #10-32 X 3/8 |
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N722P16006B6 |
4 |
Table 1. Parts list for THQB three-phase, twelve-pole breaker installation kit, and catalog number ASPP6QB6D.
Installation
WARNING: Before attempting to install one of these kits, remove all power from the panelboard.
Use the following procedure to install a THQB circuit breaker kit. Call-out numbers in the illustrations and numbers in brackets in the text refer to the Item Numbers in Table 1. Installation of a three-pole kit is illustrated in Figure 1.
1.Remove the interior assembly from its packaging and verify that all parts are present, as given in the packing list.
2.Remove the 8 screws (600A and 800A panels) securing the dead front to panelboard interior. Lift off the dead front and place it and the screws aside.
3.Remove the circuit breaker kit from its packaging and verify that all parts are present, as given in the packing list.
4.Refer fig no.1 to mount the breaker on interior. Place 3X base [3] adjacent to the crossbar [7], to locate the mounting hole for the B phase strap [2]. Remove 3X base [3] and screw the B phase strap [2] into place using screw [4]. Then mount the strap for A and C phase [1] into place using screws [4]. All phase straps
DEH40158 |
1 |
Rev.No.01 |
DEH40158
should be clamped with main bus using screws [4] with a maximum of 60 in-lb torque.
Figure 1. Installation of a THQB circuit breaker kit on interior, catalog number ASPP6QB6D, into an A-Series® II Panelboards.
5.Place the breaker as shown in fig.1 such that breaker strap hole aligns with breaker mounting strap tapped hole and other end of breaker snaps with 3X base lancing slot provided and then tighten terminal screws completely with 27-36 inlb.
6.Remove the eight screws [6] of existing one filler plates from dead front where THQB breaker needs to be installed, as illustrated in Figure 2.
DEH40158 |
2 |
Rev.No.01 |
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