GE Industrial Solutions AMCB6FJ, AMCB3FJ, AMCB2FJ, AMCB4FJ User Manual

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DEH059 Installation Instructions R02

Spectra Series™ Power Panelboards

Bolt-On Circuit Breaker Kits

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:

• Bolt-on circuit breaker kits AMCB6FJ, AMCB3FJ, AMCB2FJ, and AMCB4FJ

• Circuit breaker types SFH, SFL, SFP, TF, a nd TH

• Circuit breaker cover kits AFP3SFS, AFP3SFD, AFP3TFS, and AFP3TFD

Table 1 lists the parts included in the bolt-on circuit breaker kits for main and single-branch configurations. Table 2 lists the parts included in the kits for doublebranch configurations. The replacement hardware kit has catalog number AHKBF1.

Installation

Numbers in brackets in the following instructions and figures refer to the Item numbers in Tables 1 and 2.

1. Install the circuit breaker straps. Before installing into Spectra APNB bolt-on–style interiors, locate the side of the panel interior at which the dimension from the nearest vertical bus face to the inner face of the bus support rail is 2.75 inches, as illustrated in Figures 2 and 5. Mount the straps on this side of the vertical bus.

a. Main and single-branch breakers. Install the circuit

breaker straps beginning with the outermost poles, as shown in Figures 1 and 3. Slide an antiturn clip [16] over the square shank of a carriage bolt [2]. Insert the carriage bolt assembly into the front square hole so that the pin rests on top of the vertical bus.

For a right-hand cable connection, align the square hole in the strap [1] with the carriage bolt [2] and slide it against the vertical bus, so that the pin on the antiturn clip [16] is inserted into the small hole on the strap, as shown in Figure 1.

For a left-hand cable connection, position the strap [1] and the spacer [17] so that the square hole and hole above are aligned, then insert the carriage bolt [2] and antiturn clip [16] so that the pin of the clip is inserted into the small hole in the strap and spacer, as shown in Figure 3.

Item Description Qty.

1 A pole strap 1

/4-20 x 1.50 carriage bolt

/4-20 x 1.00 carriage bolt* 31/4" Belleville washer 6 41/4-20 nut 6 5 B pole strap 1 6 C pole strap 1 7 Breaker mounting bracket 1 8 Breaker mounting bracket 1 9 Thread-forming screw 4

101/4-20 x 3/4" machine screw 3 111/4" Belleville washer 3 12 #10-32 x 33/4" machine screw 2 13 #10 flat washer 2 14 #10-32 x 1/2" machine screw 2 15 #10 lock washer 2 16 Antiturn clip 6 17 Strap spacer 3

* Use with single breaker straps connected to a

vertical bus rated at 600 A or less.

Table 1. Bolt-on breaker kit parts for main and single-branch

configurations.

Item Description Qty.

18 A & C pole outer strap 2 19 A & C pole inner strap 2

4-20 x 1.50 carriage bolt

/4-20 x 1.00 carriage bolt*

211/4" Belleville washer 3 221/4-20 nut 3 23 B pole strap 2 24 Breaker mounting bracket 2 25 Thread-forming screw 4 261/4-20 x 3/4" machine screw 6 271/4" Belleville washer 6 28 #10-32 x 33/4" machine screw 4 29 #10 flat washer 4 30 Antiturn clip 3

* Use with single breaker straps connected to a

vertical bus rated at 600 A or less.

Table 2. Bolt-on breaker kit parts for double-branch configurations.

Secure the complete strap assembly to the vertical bus with the Belleville washer [3] and nut [4]. Leave the connection finger tight at this time. Repeat the process on the center-pole strap [5] and then install the last strap [6], as shown in Figure 1 or Figure 3.

b. Double-branch breakers. Install the circuit breaker

straps beginning with the outermost poles, as shown in Figures 4 and 5. Slide an antiturn clip [30] over the square shank of a carriage bolt [20]. Insert the carriage bolt assembly into the front square hole so that the pin rests on top of the vertical bus.

Align the square hole in the straps [18 & 19] with the carriage bolt [20] and slide it against the vertical bus, so that the pin on the antiturn clip [30] is inserted into the small hole on the strap, as shown in Figures 4 and 5.

Secure the complete strap assembly to the vertical bus with the Belleville washer [21] and nut [22]. Leave the connection finger tight at this time. Repeat the process on the center-pole straps [23] and then install the last straps [18 & 19], as shown in Figures 4 and Figure 5.

2. Install the circuit breaker mounting brackets and cover supports.

a. Main and single-branch breakers. Fasten the

breaker mounting bracket [7] to the panel side rail with thread-forming screws [9]. Attach a cover support (included in the breaker cover kit) to the threaded holes in the mounting bracket with the #10-32 x

/2" machine screws [14] and lock

washers [15] tightened to 18 in-lb. Attach the breaker mounting bracket [8] to the

opposite side rail with thread-forming screws [9] tightened to 30 in-lb. With the mounting tabs on a cover support oriented outward, slide the lowest slot on the support onto the breaker mounting bracket until it snaps into place, as illustrated in Figure 6.

The cover support can be easily removed by inserting a screwdriver into the mounting slot on the underside of the mounting bracket assembly and gently prying downward, while pushing the cover support off, as illustrated in Figure 7.

b. Double-branch breakers. Attach the breaker

mounting brackets [24] to the panel side rails with thread-forming screws [25], tightened to 30 in-lb. With the mounting tabs on the cover supports oriented inward, slide the lowest slot on the supports onto the breaker mounting brackets until they snap into place.

Cover supports can be easily removed by inserting a screwdriver into the mounting slot on the underside of the mounting bracket assembly and gently prying downward, while pushing the cover support off.

3. Install the circuit breakers. a. Main and single-branch breakers. For main breaker

operation, mount the device such that the load- or

OFF-side terminals rest on the straps and the

mounting bracket supports the opposite end of the breaker housing. For single-branch operation, position the circuit breaker such that the line- or

ON-side terminals rest on the straps and the

opposite side is supported by the mounting bracket.

Align the holes in the circuit breaker housing with the corresponding holes in the mounting bracket. Secure the breaker to the bracket with the #10-32 x

/4" machine screws [12] and flat washers [13],

3 tightened to 30 in-lb. Attach the circuit breaker terminals to the threaded holes in the straps using

/4-20 x 3/4" machine screws [10] and

the Belleville washers [11]. Tighten each terminal connection to 50 in-lb.

NOTE: Straps may require minor adjustments for proper hole alignment.

b. Double-branch breakers. Position each circuit

breaker such that the line- or

ON-side terminals rest

on the straps and the opposite side is supported by the mounting bracket. Align the holes in each circuit breaker housing with the corresponding holes in the mounting bracket. Fasten the breakers

to the brackets with the #10-32 x 3

/4" machine screws [28] and flat washers [29], tightened to 30 in-lb. Attach the line-side circuit breaker terminals

to the threaded holes in the straps using the

/4" machine screws [26] and Belleville washers

/4-20

[27]. Tighten the line-side screws to 50 in-lb.

NOTE: Straps may require minor adjustments for proper hole alignment.

4. Tighten the bolted connections. Tighten the bolted strap connections at the main to 65 in-lb. It may be necessary to remove the adjacent circuit breaker to allow access to the bolted connections at the vertical bus.

5. Two-pole configurations. For phase-balancing purposes, single-phase panels, and dc applications, see Table 3 for the two-pole breaker mounting configurations available with the listed strap kits.

Strap Kit

Catalog No.

AMCB4FJ

AMCB2FJ

* Use for single-phase panels and dc applications.

A-Phase

Location

X* X*

B-Phase

Location

C-Phase

Location

Table 3. Possible phase connection combinations with strap kits.

6. Tape unused contacts. Apply multiple wrappings of insulation to unused strap contact surfaces, as illustrated in Figure 8. A UL-recognized 105° C thermoplastic tape (OANZ2, Permacel P-30-105, or 3M 66R) is required. Overlap greater than one-half of each preceding turn, as shown, to achieve a minimum tape thickness of 0.028 inch. This insulation thickness requires two complete layers of overlapping turns.

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