Specifications - S&C Electric Company · Specification Bulletin 821-31. Table 1. Branch- and Main-Feeder Styles—Less Connectors Style Mounting Position Rating Disconnect Gap, Inches

Conditions of SaleSTANDARD: The seller’s standard conditions of sale set forth in Price Sheet 150 apply.

SPECIAL TO THIS PRODUCT:INCLUSIONS: All Loadbuster Disconnect Switches are equipped with attachment hooks for use with Loadbuster®—The S&C Loadbreak Tool.

All Loadbuster Disconnect Switches are furnished with tin-plated terminal pads as a standard feature.

Crossarm-Vertical and Crossarm-Inverted Style Discon-nect Switches are supplied with a backup member and hard-ware, suitable for single- and double-crossarm mounting.

EXCLUSIONS: Disconnect switches do not include connectors. Various connector arrangements are available separately as listed in Tables 13 and 14 on page 7.

Branch-Feeder Style Disconnect Switches do not include backup member and hardware or dead-ending brackets. Backup members and hardware and dead-ending brack ets for these disconnects are available separately as listed in Tables 9 and 10 on page 6.

Overhead Pole-Top Style Disconnect Switches do not include a mounting bracket. A mounting bracket for these discon nects is available as listed in the Table 12 page 6.

SPECIFICATION DEVIATIONS: S&C Loadbuster Disconnect Switches in Branch-Feeder, Main-Feeder, and Station Styles are offered with a choice of Cypoxy™ Insulators▲ or porce lain insulators as found in Tables 1 and 2 on pages 2 and 3. The standard insulator color is gray. For special insulators or special connectors, consult your nearest S&C Sales Office.

How to Order a Complete Loadbuster Disconnect SwitchSTEP 1. Obtain the catalog number of the desired disconnect

switch from tables 1, 2, and 3, on pages 2, 3, and 4.

STEP 2. If connectors are required, select the desired connec tor arrangement from Tables 13 and 14 on page 7. Add the indicated suffix letter to the catalog number of the dis connect switch selected in Step 1.

STEP 3. For Branch-Feeder Style Disconnect Switches, select the desired backup member with mounting hardware and/or dead-ending brackets, if desired, from Tables 9 and 10 on page 6. Add the indicated suffix(es) to the catalog num ber of the disconnect switch selected in Step 1.

For Overhead Pole-Top Style Disconnect Switches, select the mounting bracket, if desired, from Table 12 on page 6. Add the indicated suffix letter to the catalog number of the disconnect switch selected in Step 1.

How to Order Handling Tools

Obtain the catalog number(s) of recommended handling tool(s) from Table 8 on page 5. Refer to Specification Bulletin 851-31, “S&C’s Handling Tools: Specifications.”

A NOTE ON CONNECTORS: The Loadbuster Disconnect Switch connector options designated “-C” and “-A” are suitable for hot-line tool handling. The ter minal-pad hole design prevents the connector attachment bolt(s) from turning, and the saddle member of the connector is held against, and is loosely keyed to the terminal pad, by the retaining washer(s). The clamping member of the connector is, in turn, keyed to the saddle. The connector can be easily loosened and tightened by means of the hex nut(s)—without either connector member turning in place.

Although the bolt and the connector saddle are held cap tive, they nevertheless “float” so that, when the hex nut is tightened, all mating parts are subjected to the same high clamping pressure.

With connector options “-G” and “-K” for disconnect switches rated 900 amperes continuous, and with con-nector option “-H” or “-J” for disconnect switches rated 630 amperes continuous as well as overhead pole-top style disconnect switches rated 630 amperes con tinuous, the attachment bolts are similarly held captive by retaining washers and are prevented from turning by the ter minal-pad hole design.

Specifications

★ S&C Loadbuster Disconnect Switches are manufactured in accordance with a quality system certified to ISO 9001:2000. The Rural Utilities Service (RUS) has accepted S&C Loadbuster Disconnect Switches in all feeder- and station-style models.

▲ Cypoxy is the S&C trademark for S&C’s cycloaliphatic epoxy resin system. Cypoxy is nontracking, self-scouring, nonweathering … there’s never a compromise of insulation integrity.

S&C Loadbuster Disconnect® Switches★

Outdoor Distribution (14.4 kV through 34.5 kV)

February 12, 2018© S&C Electric Company 2001-2018, all rights reserved Specification Bulletin 821-31

Table 1. Branch- and Main-Feeder Styles—Less Connectors

StyleMounting Position

Rating

Disconnect Gap, Inches (mm)

Catalog NumberPage

Reference for Dimensional Information

kV Amperes, RMS

Cypoxy Insulators

Porcelain InsulatorsNom. Max BIL① Cont. Peak

Withstand②

Branch feeder③④ (with bases having carriage- bolt slots)

Vertical or Inverted

14.4

14.4

14.4

25

25

15.5

15.5

15.5

27

27

110

110

110

125▲

125▲

630

630

900

630

900

65 000

65 000

65 000

65 000

65 000

8 (203)

10⅞ (276)

7½◐ (191)

10⅞ (276)

10½◐ (267)

4942R10-E

4922R10-E

4752R10-E

4943R10-E

4733R10-E

4942R10

4922R10

4752R10

4943R10

4733R10

10

Branch feeder③④ (with smooth- slotted bases)


14.4

14.4

25

15.5

15.5

27

110

110

125▲

630

630

630

65 000

65 000

65 000

8 (203)

10⅞ (276)

10⅞ (276)

14702R1-E

14712R1-E

14703R1-E

14702R1

14712R1

14703R1

11

Main feeder Vertical or Inverted

25

25

27

27

125▲

125▲

630

900

65 000

65 000

10⅞ (276)

10½◐ (267)

4622R1-E

4792R4-E

4622R1

4792R412

① Verified by impulse tests with disconnect switch blade closed or open and base grounded, and with disconnect switch blade open and base ungrounded. Meets IEEE Standard C37.34-1994 and IEC 62271-102.② For disconnect switches rated 900 amperes continuous, the 3-second rating is 25,000 amperes, RMS, symmetrical. For discon-nect switches rated 630 amperes continuous, the 3-second rating is 16,000 amperes, RMS, symmetrical.

③ For single- and double-crossarm mounting.④ Specify backup member and mounting hardware, and dead-ending brackets, if desired, by adding appropriate suffix letter(s) to catalog number. For example, 4942R9-D4W. See Tables 9 and 10 on page 6.▲ These disconnect switches equipped with Cypoxy Insulators meet require ments for 150-kV BIL rating.◐ Disconnect switches rated 900 amperes equipped with Cypoxy Insulators have a 1-inch (25-mm) greater disconnect gap.

S&C Loadbuster Disconnect® Switches

2 S&C Specification Bulletin 821-31

Table 2. Crossarm and Station Styles—Less Connectors

StyleMounting Position

RatingDiscon-

nect Gap, Inches (mm)

Cypoxy Station Post Insulators

Porcelain Station Post Insulators Page

Reference for

Dimensional Information

kV Amperes, RMS

Catalog Number

Leakage Distance,

Inches (mm)

Catalog Number

Leakage Distance,

Inches (mm)Nom. Max BIL① Cont.Peak

Withstand②

Crossarm Vertical③

Vertical 34.5 38 150 900 65 000 14 (356) 4873R2-E 26¼ (667) 4873R2 24 (610) 13

Crossarm Inverted③

Inverted 34.5 38 150 900 65 000 14 (356) 4893R2-E 26¼ (667) 4893R2 24 (610) 14

Station Vertical

Vertical

14.4

14.4

25/34.5 ■

25/34.5 ■

34.5

15.5

15.5

38

38

38

110

110

150

150

200

630

900

630

900

900

65 000

65 000

65 000

65 000

65 000

10 (254)

10 (254)

10 (254)

14 (356)

14 (356)

14722R1-E

14822R1-E▲

14723R1-E

14823R1-E

14824R1-E

16⅞ (429)

16⅞ (429)

26¼ (667)

26¼ (667)

37⅜ (949)

14722R1

14822R1▲

14723R1

14823R1

14824R1

15¾ (400)

15¾ (400)

24 (610)

24 (610)

37 (940)

15

Station Inverted

Inverted

14.4

14.4

25/34.5 ■

25/34.5 ■

34.5

15.5

15.5

38

38

38

110

110

150

150

200

630

900

630

900

900

65 000

65 000

65 000

65 000

65 000

10 (254)

10 (254)

10 (254)

14 (356)

14 (356)

4632R1-E

4782R4-E▲

4903R1-E

4783R1-E

4784R1-E

16⅞ (429)

16⅞ (429)

26¼ (667)

26¼ (667)

37⅜ (949)

4632R1

4782R4▲

4903R1

4783R1

4784R1

15¾ (400)

15¾ (400)

24 (610)

24 (610)

37 (940)

16

① Verified by impulse tests with disconnect switch blade closed or open and base grounded, and with disconnect switch blade open and base ungrounded. Meets IEEE Standard C37.34-1994 and IEC 62271-102.② For disconnect switches rated 900 amperes continuous, the 3-second rating is 25,000 amperes, RMS, symmetrical. For discon-nect switches rated 630 amperes continuous, the 3-second rating is 16,000 amperes, RMS, symmetrical.③ For single- and double-crossarm mounting.

■ Applicable at 34.5 kV where the leakage distance to ground meets user’s requirements.▲ Mountings can be provided with insulators of the next higher voltage rating—add catalog number suffix “-Z3” to the catalog number.


S&C Specification Bulletin 821-31 3

Table 5. Blade Stop Options ①

ItemAdd Catalog

Number Suffix

No blade stop② -B0

Blade stop installed at 90°③ -B90

① Also applicable to Loadbuster Disconnect Switch live parts.② Available only on 630-ampere and 630/900-ampere overhead pole-top style discon nect switches.

③ Disconnect switches are furnished with blade stop installed at 160° as standard.

Table 3. Overhead Pole-Top Style—Less Connectors

Illustration

Rating

Disconnect Gap, Inches (mm)

Catalog Number② Porcelain Insulator

Catalog Number② Polymer Insulator

Page Reference for Dimensional Information

kV Amperes, RMS

Nom. Max BIL Cont.Peak

Withstand①

14.4 15.5 110 630\900◆ 65 000 8 (203) 18932R1 18932R1-P 17

25 27 150 630\900◆ 65 000 11 (279) 18933R1 18933R1-P 17

34.5 38 170 ■ 630\900◆ 65 000 11 (279) 18934R1 − 17

34.5 38 150 630\900◆ 65 000 11 (279) − 18934R1-P 17

① The 3-second rating is 16,000 amperes, RMS, symmetrical.

② Specify mounting bracket option, if desired, by adding appropriate suffix letter to catalog number. See Table 12 on page 6.

■ Listed BIL rating is S&C’s tested value. The IEEE rating for this discon nect is 150 kV BIL. ◆ S&C rating for ambient temperatures through 40°C (104°F) with a minimum wind velocity of 1.4 m.p.h. The IEEE rating for this disconnect switch is 630 amperes continuous.

Table 4. Loadbuster Disconnect Switch Live Parts—Less Connectors

Rating Amperes, RMS Disconnect Gap,② Inches (mm)

Catalog Number

Cont. Peak Withstand① with Adapters③ without Adapters④

630

630

65 000

65 000

7⅛ (181)

10 (254)

2650R1

2660R1

⑤⑤

900

900

900

65 000

65 000

65 000

7 (178)

10 (254)

14 (356)

2670R1

2680R1

2690R1

2671R1

2681R1

2691R1

① These ratings apply to disconnect switches with a base that is sufficiently rigid to preclude significant distortion when bolted to its mounting surface, to maintain accurate blade alignment, and to assure positive latching and smooth unlatching during forceful operation. For disconnect switches rated 900 amperes continuous, the 3-second rat-ing is 25,000 amperes RMS, symmetrical. For disconnect switches rated 630 amperes continuous, the 3-second rating is 16,000 amperes RMS, symmetrical.

② Disconnect gap is dependent upon the type of insulators used. Val-ues listed are applicable to disconnect switches utilizing ANSI standard station post insulators.③ Live parts furnished with adapters are suitable for attachment to 3-inch (76-mm) bolt-circle insulators.④ Live parts furnished without adapters are suitable for attachment to 2¼-inch (57-mm) bolt-circle insulators.

⑤ Not applicable.



Table 6. Other Options

ItemAdd Catalog

Number Suffix

Stainless steel anchor horn and hinge support① -S1

Stainless steel base② -S2

① Available on all disconnect switches. ② Available only on branch-feeder disconnect switches, Catalog Num-bers 14712, 14712-E, 14703, and 14703-E.

Table 8. Recommended Handling Tools—For use with Loadbuster Disconnect Switches

ItemCatalog Number

Station prong 4402R2

Locking prong 4404

Distribution prong 4416

Talon™ Handling Tool 4440

Universal pole ◆

◆ Select to match height of installation. Refer to Specification

Bulletin 851-31, “S&C’s Handling Tools: Specifications.”

Table 7. Replacement Insulators

For Disconnect Switch Insulator Catalog Number

StyleRating,

kV NominalCatalog Number S&C Cypoxy Porcelain

Branch Feeder

14.4

4732, 4732R1, 4732R2, 4752 thru 4752R6, 4752R8, 4752R9, 4752R10, 4922, 4922R9, 4922R10, 4942, 4942R9, 4942R10, 14702, 14702R1, 14712, 14712R1, 14802

— PA-7065

4752R6-E thru 4752R10-E, 4922-E, 4922R9-E, 4922R10-E, 4942-E, 4942R9-E, 4942R10-E, 14702-E, 14702R1-E, 14712-E, 14712R1-E, 14802-E

PA-7191 —

25

4733, 4733R2, 4733R9, 4733R10, 4943, 4943R9, 4943R10, 14703, 14703R1, 14803 — PA-7064

4733-E, 4733R1-E, 4733R2-E, 4733R9-E, 4733R10-E, 4943-E, 4943R9-E, 4943R10-E, 14703-E, 14703R1-E, 14803-E

PA-7192 —

Main Feeder 254622, 4622R1, 4792 thru 4792R4 — PA-7064

4622-E, 4622R1-E, 4792R3-E, 4792R4-E PA-7192 —

Crossarmand

Station

14.4

4632, 4632R1, 4782 thru 4782R4, 14722, 14722R1, 14822, 14822R1 — 27077-70◭(T.R. No. 205)

4632-E, 4632R1-E, 4782R3-E, 4782R4-E, 14722-E, 14722R1-E, 14822-E, 14822R1-E PA-7252R1 —

4632-HF, 4642, 4782R3-HF, 4832, 14722-HF, 14822-HF — 73632-70●

25/34.5■and34.5

(150 kV–BIL)

4783, 4783R1, 4873R1, 4873R2, 4893R1, 4893R2, 4903, 4903R1, 14723, 14723R1, 14823, 14823R1

— 25565-70◭(T.R. No. 208)

4783-E, 4783R1-E, 4873R1-E, 4873R2-E, 4893R1-E, 4893R2-E, 4903-E, 4903R1-E, 14723-E, 14723R1-E, 14823-E, 14823R1-E

PA-7253R1 —

4783-HF, 4793, 4873, 4893, 4903-HF, 4913, 14723-HF, 14823-HF — 73633-70●

34.5(200 kV–BIL)

4784, 4784R1, 14824, 14824R1 — 9785-70◭(T.R. No. 210)

4784-E, 4784R1-E, 14824-E, 14824R1-E PA-7254R1 —

4784-HF, 4794, 14824-HF — 73634-70●

◭ Lapp catalog number.

● Discontinued Lapp catalog number. Hi-F Station Post Insulators are no longer available.

■ Applicable at 34.5 kV where the leakage distance to ground meets user’s requirements.



Table 11. 160° Latch Option—For 630 Ampere Main-Feeder, Station-Vertical, and Station-Inverted Styles

Item Add Catalog Number Suffix

160° latch. Spring-clip latch holds blade in 160°-open position -Y

Table 12. Mounting Bracket Option—For Overhead Pole-Top Style

ItemAdd Catalog

Number Suffix

S&C Extended Mounting Bracket, for crossarm, pole, or wall mounting of overhead pole-top style disconnect switches -B

Table 10. Backup Member, Mounting Hardware, Dead-Ending, and 160°-Latch① Options—For Branch-Feeder Style Disconnect Switches with Smooth-Slotted Bases

ItemAdd Catalog

Number Suffix

Backup member with two ½–13 × 10 galvanized steel hex-head machine bolts (5-inch minimum thread), flat washers, lockwashers, and nuts

-D5

Backup member with four ½–13 × 10 galvanized steel hex-head machine bolts (5-inch minimum thread), flat washers, lockwashers, and nuts

-D6

Stainless steel back-up member with two ½–13 × 10 stainless steel hex-head machine bolts (5-inch minimum thread), flat washers, lockwashers, and nuts

-D7

Stainless steel back-up member with four ½–13 × 10 stainless steel hex-head machine bolts (5-inch minimum thread), flat washers, lockwashers, and nuts

-D8

Two dead-ending brackets with galvanized steel mounting hardware, for attachment to both ends of the disconnect base② -W

160° latch. Spring-clip latch holds blade in 160°-open position. Only available on 630 ampere disconnects -Y

① The 160° latch is only available on 630 ampere disconnect switches. ② Maximum dead-end loading is 2000 lbs. per conductor where pull-off forces are applied to both sides of the disconnect switch.

Table 9. Backup Member, Mounting Hardware, Dead-Ending, and 160°-Latch① Options—For Branch-Feeder Style Disconnect Switches with Bases Having Carriage-Bolt Slots

ItemAdd Catalog

Number Suffix

Backup member with two ⅜–16 × 7½ galvanized steel carriage bolts (3-inch minimum thread), flat washers, lockwashers, and nuts -D1

Backup member with four ⅜–16 × 7½ galvanized steel carriage bolts (3-inch minimum thread), flat washers, lockwashers, and nuts -D2

Backup member with two ⅜–16 × 9 galvanized steel carriage bolts (3-inch minimum thread), flat washers, lockwashers, and nuts -D3

Backup member with four ⅜–16 × 9 galvanized steel carriage bolts (3-inch minimum thread), flat washers, lockwashers, and nuts -D4

Two dead-ending brackets with galvanized steel mounting hardware, for attachment to both ends of the disconnect base -W

160° latch. Spring-clip latch holds blade in 160°-open position. Only available on 630 ampere disconnects -Y

① The 160° latch is only available on 630 ampere disconnect switches.



Table 14. Connectors—Two Provided per Disconnect Switch—For Branch-Feeder, Main-Feeder, Crossarm, and Station Style Disconnect Switches Rated 900 Amperes Continuous

To Specify Connector Arrangement Add Catalog Number SuffixIllustration Description Accommodating Conductor

Bronze body, tin plated. Single ½–13 × 2¾ Galvanized Steel Bolt

No. 2 solid (33.6 mm2) through 500 kc mil (335 mm2) stranded copper or aluminum

-C

Aluminum-alloy body, tin plated. Two ½–13 × 2¾ Galvanized Steel Bolts


-A

Provision only for compression con nectors. Includes two ½–13 × 2 galvanized steel bolts per terminal pad①②

-G

Provision only for compression con nectors Includes two ½–13 × 2 stainless steel bolts per terminal pad①②

-K

① Accommodates connectors or connector tongues up through ¾-inch (19 mm) thickness.

② Not suitable for hot-line tool handling since connector attachment bolts are not held captive.

Table 13. Connectors—Two Provided per Disconnect Switch—For Branch-Feeder, Main-Feeder Overhead Pole-Top Style Disconnect Switches, and Station Style Disconnect Switches Rated 630 Amperes Continuous①

To Specify Connector Arrangement Add Catalog Number SuffixIllustration Description Accommodating Conductor

Bronze body, tin plated. Single ½–13 × 2¾ Galvanized Steel Bolt


-C

Aluminum-alloy body, tin plated. Two ½–13 × 2¾ Galvanized Steel Bolts


-A

Provision only for compression con nectors. Includes two ½–13 × 2 galvanized steel bolts

per terminal pad①②-H

Provision only for compression con nectors. Includes two ½–13 × 2 stainless-steel bolts

per terminal pad①②-J

① Accommodates connectors or connector tongues up through ¾-inch (19 mm) thickness.

② Not suitable for hot-line tool handling since connector attachment bolts are not held captive.



The Loadbuster Disconnect Switch connector options desig-nated “-C” and “-A” (see Tables 13 and 14 on page 7) are suitable for hotline tool handling. The terminal-pad hole design pre-vents the connector attachment bolt(s) from turning, and the saddle member of the connector is held against, and loosely keyed to, the terminal pad by the retaining washer(s). The clamping member of the connector is, in turn, keyed to the saddle. The connector can be easily loosened and tightened by means of the hex nut(s)—with out either connector member turning in place.

Although the bolt and the connector saddle are held captive, they nevertheless “float” so that when the hex nut is tightened all mating parts are subjected to the same clamping pressure.

With connector options “-G” and “-K” for disconnect switches rated 900 amperes continuous, and with connector option “-H” or “-J” for disconnect switches rated 630 amperes continuous as well as overhead pole-top style disconnect switches rated 900 amperes continuous, the attachment bolts are similarly held cap tive by retaining washers and are prevented from turning by the terminal-pad hole design.

½-inch carriage bolt

630- and 900-Ampere Terminal Pad Design

17/32-inch square hole

Key

Connector saddle

Retaining washer

Connector clamp

Flat washer

Lockwasher

Hex nut



Mounting Arrangements

Branch-Feeder Style (with optional backup member)

160°160°

Maximum Standard Crossarm Size

With Optional Backup Member and Mounting

Hardware Suffix

Disconnect Switch Mounting

Arrangement(mm)

Inverted Vertical

-D1 or -D2 3¾ × 4¾ (95 x 121)

4¾ × 5¾

(121 x 146)

-D3 or -D4 4¾ × 5¾

(121 x 146)4¾ × 5¾

(121 x 146)

-D5 or -D6 4¾ × 5¾

(121 x 146)4¾ × 5¾

(121 x 146)90°

160°

90°

160°

Overhead Pole-Top Style ◆

◆ Optional extended mounting bracket, catalog number suffix “-B”, is adjustable for 3 inch × 4 inch (76 x 102) to 4 inch × 5 inch (102 x 127) crossarm.

Main-Feeder and Station Styles

160°

160°

90°

Crossarm-Inverted Style

160°

Maximum Crossarm Size: 4¾ × 5¾ inches

(121x146)

160°

160°

90°

Crossarm-Vertical Style

160°

90°

160°

90°

Maximum Crossarm Size: 4¾ × 5¾ inches(121x146)



Branch-Feeder Style (with bases having carriage-bolt slots)

★ Slots are located symmetrically with respect to end of base.

Dimensions in inches (mm)

6( 152 )

15( 381 )

6( 152 )

7° REF.

3/4( 19 )

3/4( 19 )

1 1/4 ( 32 )

1 3/4( 44 ) 5/8

( 16 )

2 ( 51 )

1 3/4( 44 ) 5/8

( 16 )

17/32 SQ. HOLES

17/32 SQ. HOLES

7/8 ( 22 )

1 1/4( 32 )

1 3/4( 44 )

2 1/2 ( 64 )

5 ( 127 )

21 1/2 ( 546 )

1 ( 25 )2 ( 51 )

1 3/8 ( 35 )

24 ( 610 )

3 5/16( 84 )

5 3/8( 137 )

1 3/8( 35 )

22 3/8 ( 568 )

1 ( 25 )2 ( 51 )

3/8 ( 10 )

1 1/4( 32 )

7/8 ( 22 )

2 1/2 ( 64 )

5 ( 127 )

1 3/4( 44 )

3 5/16( 84 )

5 3/8( 137 )

1 3/8( 35 )

1 13/16( 46 )

6( 152 )

12( 305 )

6( 152 )

7° REF.

E1 A

R

E2

M

90°

160°

E1

E2

A

R

M

90°

160°

27 ( 686 )

TERMINAL PAD DETAIL

Catalog numbers 4942R10, 4942R10-E, 4752R10, AND 4752R10-E

Catalog numbers 4922R10, 4922R10-E, 4943R10, 4943R10-E, 4733R10, and 4733R10-E

StyleMounting Position①

Rating

Catalog Number (less

Connectors)④

Dimensions in Inches (mm)

Net Wt., Lbs. (kg.)

kV Amperes, RMS

A E1 E2 M RNom. Max BIL② Cont.

Peak Withstand③

Branch Feeder (with

bases having

carriage-bolt

slots)


14.4 15.5 110

630 65 000

4942R104942R10-E4922R104922R10-E

8⅛ (206)8⅛ (206)8⅛ (206)8⅛ (206)

5¼ (133)5¼ (133)8⅛ (206)8⅛ (206)

7½ (191)7½ (191)9½ (241)9½ (241)

2111∕16 (551)2111∕16 (551)2411∕16 (627)2411∕16 (627)

119∕16 (294)119∕16 (294)119∕16 (294)119∕16 (294)

29 (13.2)23 (10.4)

32½ (14.7)26½ (12.0)

900 65 0004752R104752R10-E

8¼ (210)8¼ (210)

5¼ (133)5¼ (133)

7½ (191)7½ (191)

21¾ (552)21¾ (552)

11⅝ (295)11⅝ (295)

34 (15.4)28 (12.7)

25 27 125▲

630 65 0004943R104943R10-E

9⅜ (238)11⅜ (289)

8⅛ (206)8⅛ (206)

9¾ (248)9¾ (248)

25¾ (654)27¾ (705)

13 (330)15 (381)

33½ (15.2)30 (13.6)

900 65 0004733R104733R10-E

9¾ (248)11¾ (298)

9⅛ (232)9⅛ (232)

10 (254)10 (254)

26¾ (679)28¾ (730)

13 (330)15 (381)

39½ (17.9)35½ (16.1)

① Blade opens 160°. Select “-B90” option to limit blade travel to 90°.

② Verified by impulse tests with disconnect switch blade closed or open and base grounded or ungrounded. Meets IEEE Standards C37.34-42-1994 and IEC 62271-102.

③ For disconnect switches rated 900 amperes continuous, the 3-sec-ond rating is 25,000 amperes, RMS, symmetrical. For disconnect switches rated 630 amperes continuous, the 3-second rating is 16,000 amperes, RMS, symmetrical.

④ Catalog number suffix “-E” signifies model is furnished with S&C Cypoxy™ Insulators. Catalog number without suffix “-E” signifies model is furnished with porcelain distribution-type insulators.

▲ These disconnect switches equipped with Cypoxy Insulators meet require ments for 150-kV BIL rating.

Table 15. Ratings and Dimensions



3/4( 19 )

3/4( 19 )

1 1/4 ( 32 )

1 3/4( 44 ) 5/8

( 16 )

17/32 SQ. HOLES

5 3/8( 137 )

7/8 ( 22 )

1 1/4( 32 )

1 3/4( 44 )

2 1/2 ( 64 )

5 ( 127 )

21 1/2 ( 546 )

1 ( 25 )2 ( 51 )

1 3/8 ( 35 )

24 ( 610 )

3 5/16( 84 )

5 3/8( 137 )

1 3/8( 35 )

22 3/8 ( 568 )

1 ( 25 )2 ( 51 )

3/8 ( 10 )

1 1/4( 32 )

7/8 ( 22 )

2 1/2 ( 64 )

5 ( 127 )

1 3/4( 44 )

3 5/16( 84 )

5 3/8( 137 )

1 3/8( 35 )

1 13/16( 46 )

27 ( 686 )

7° REF.

6( 152 )

12( 305 )

6( 152 )

E1

E2

A

M90°

160°

7° REF.

6( 152 )

15( 381 )

6( 152 )

E1

E2

A

R

M


Rating

Catalog Number (less Connectors)④


Net Wt., Lbs. (kg.)

kV Amperes, RMS


Peak Withstand③

Branch Feeder (with smooth-slotted bases)


14.4 15.5 110 630 65 000

14702R114702R1-E14712R114712R1-E

8½ (216)8½ (216)8½ (216)8½ (216)

5¼ (133)5¼ (133)8⅛ (206)8⅛ (206)

7⅝ (194)7⅝ (194)9¾ (248)9¾ (248)

21⅝ (549)21⅝ (549)24⅝ (625)24⅝ (625)

11¾ (298)11¾ (298)11¾ (298)11¾ (298)

29 (13.2)23 (10.4)

32½ (14.7)26½ (12.0)

25 27 125▲ 630 65 00014703R114703R1-E

9¾ (248)11¾ (298)

8⅛ (206)8⅛ (206)

9¾ (248)9¾ (248)

25¾ (654)27¾ (705)

13 (330)15 (381)

33½ (15.2)30 (13.6)



③ For disconnect switches rated 630 amperes continuous, the 3-second rating is 16,000 amperes, RMS, symmetrical.

④ Catalog number suffix “-E” signifies model is furnished with S&C

Cypoxy™ Insulators. Catalog number without suffix “-E” signifies model is furnished with porcelain distribution-type insulators.▲ These disconnect switches equipped with Cypoxy Insulators meet require ments for 150-kV BIL rating.

★ Slots are located symmetrically with respect to end of base.

TERMINAL PAD DETAIL

Catalog numbers 14712R1, 14712R1-E, 14703R1, and 14703R1-E

Catalog numbers 14702R1 and 14702R1-E

Branch-Feeder Style (with smooth-slotted bases)Dimensions in inches (mm)





Rating

Catalog Number (less

Connectors)④


Net Wt., Lbs. (kg.)

kV Amperes, RMS


Peak Withstand③

Main Feeder


25 27 125▲

630 65 0004622R14622R1-E

10½ (267)12½ (318)

8⅛ (206)8⅛ (206)

9¾ (248)9¾ (248)

26½ (673)28½ (724)

13¾ (349)15¾ (400)

47 (21.3)37½ (17.0)

900 65 0004792R44792R4-E

10½ (267)12½ (318)

9⅛ (232)9⅛ (232)

10 (254)10 (254)

27½ (699)29½ (749)

13¾ (349)15¾ (400)

46 (20.9)42½ (19.3)



③ For disconnect switches rated 900 amperes continuous, the 3-sec-ond rating is 25,000 amperes, RMS, symmetrical. For disconnect switches rated 630 amperes continuous, the 3-second rating is 16,000 amperes, RMS, symmetrical.④ Catalog number suffix “-E” signifies model is furnished with S&C

Cypoxy™ Insulators. Catalog number without suffix “-E” signifies model is furnished with porcelain distribution-type insulators.

▲ These disconnect switches equipped with Cypoxy Insulators meet require ments for 150-kV BIL rating.


Main-Feeder Style


(203)




Rating

Catalog Number

(less Connectors)

Net Wt., Lbs. (kg.)

kV Amperes, RMS

Nom. Max BIL② Cont.

Short Time

Peak Withstand

3-Sec.

Crossarm Vertical Vertical 34.5 38 150 900 65 000 25 000 4873R2 85 (38.6)

① Blade opens 160°. Select “-B90” option to limit blade travel to 90°. ② Verified by impulse tests with disconnect switch blade closed or open and base grounded or ungrounded. Meets IEEE Standards C37.34-42-1994 and IEC 62271-102.


Crossarm-Vertical Style

Table 18. Ratings and Weight



TERMINAL PAD DETAIL

BASE DETAIL


Rating

Catalog Number

(less Connectors)

Net Wt., Lbs. (kg.)

kV Amperes, RMS

Nom. Max BIL② Cont.

Short Time

Peak Withstand

3-Sec.

Crossarm Inverted Inverted 34.5 38 150 900 65 000 25 000 4893R2 85 (38.6)

① Blade opens 160°. Select “-B90” option to limit blade travel to 90°. ② Verified by impulse tests with disconnect switch blade closed or open and base grounded or ungrounded. Meets IEEE Standards C37.34-42-1994 and IEC 62271-102.


Crossarm-Inverted Style

Table 19. Ratings and Weight



TERMINAL PAD DETAIL

BASE DETAIL

Catalog Numbers 14823R1, 14823R1-E, 14824R1, AND 14824R1-E

Catalog Numbers 14722R1, 14722R1-E, 14723R1, 14723R1-E, 14822R1, and 14822R1-E

① Blade opens 160°. Select “-B90” option to limit blade travel to 90°.② Verified by impulse tests with disconnect switch blade closed or open and base grounded, and with disconnect switch blade open and base ungrounded. Meets IEEE Standards C37.34-42-1994 and IEC 62271-102.③ For disconnect switches rated 900 amperes continuous, the 3-sec-ond rating is 25,000 amperes, RMS, symmetrical. For disconnect switches rated 630 amperes continuous, the 3-second rating is 16,000 amperes, RMS, symmetrical.


■ Applicable at 34.5 kV where the leakage distance to ground meets users requirements. See page 3 for leakage distance.


Rating Catalog Number

(less Connec-tors)④


Net Wt., Lbs. (kg.)

kV Amperes, RMS

A E1 E2 F M RNom. Max BIL② Cont.

Peak Withstand③

Station Vertical

Vertical

14.4 15.5 110

630 65 00014722R114722R1-E

13⅜ (340)13⅜ (340)

8⅛ (206)8⅛ (206)

9¾ (248)9¾ (248)

15 (381)15 (381)

29½ (749)29½ (749)

16⅝ (422)16⅝ (422)

55 (24.9)41 (18.6)

900 65 00014822R114822R1-E

13⅜ (340)13⅜ (340)

9⅛ (232)9⅛ (232)

10 (254)10 (254)

15 (381)15 (381)

30⅜ (772)30⅜ (772)

16⅝ (422)16⅝ (422)

60 (27.2)46 (20.9)

25/34.5 38 150

630 65 00014723R1■14723R1-E■

17⅜ (441)17⅜ (441)

8⅛ (206)8⅛ (206)

9¾ (248)9¾ (248)

15 (381)15 (381)

33½ (851)33½ (851)

20⅝ (524)20⅝ (524)

78 (35.4)51 (23.1)

900 65 00014823R1■14823R1-E■

17⅜ (441)17⅜ (441)

12⅞ (327)12⅞ (327)

12¾ (324)12¾ (324)

19 (483)19 (483)

38⅜ (975)38⅜ (975)

20⅝ (524)20⅝ (524)

86 (39.0)59 (26.8)

34.5 38 200 900 65 00014824R114824R1-E

21⅜ (543)21⅜ (543)

12⅞ (327)12⅞ (327)

12¾ (324)12¾ (324)

19 (483)19 (483)

42⅜ (1076)42⅜ (1076)

24⅝ (625)24⅝ (625)

109 (49.4)71 (32.2)


Station-Vertical Style





Rating Catalog Number

(less Connec-tors)④


Net Wt., Lbs. (kg.)

kV Amperes, RMS

A E1 E2 F M RNom. Max BIL② Cont.

Peak Withstand③

Station Inverted

Inverted

14.4 15.5 110

630 65 0004632R14632R1-E

13⅜ (340)13⅜ (340)

8⅛ (206)8⅛ (206)

9¾ (248)9¾ (248)

15 (381)15 (381)

29½ (749)29½ (749)

16⅝ (422)16⅝ (422)

55 (24.9)41 (18.6)

900 65 0004782R44782R4-E

13⅜ (340)13⅜ (340)

9⅛ (232)9⅛ (232)

10 (254)10 (254)

15 (381)15 (381)

30⅜ (772)30⅜ (772)

16⅝ (422)16⅝ (422)

60 (27.2)46 (20.9)

25/ 34.5

38 150

630 65 000 4903R1■4903R1-E■

17⅜ (441)17⅜ (441)

8⅛ (206)8⅛ (206)

9¾ (248)9¾ (248)

15 (381)15 (381)

33½ (851)33½ (851)

20⅝ (524)20⅝ (524)

78 (35.4)51 (23.1)

900 65 000 4783R1■4783R1-E■

17⅜ (441)17⅜ (441)

12⅞ (327)12⅞ (327)

12¾ (324)12¾ (324)

19 (483)19 (483)

38⅜ (975)38⅜ (975)

20⅝ (524)20⅝ (524)

86 (39.0)59 (26.8)

34.5 38 200 900 65 0004784R14784R1-E

21⅜ (543)21⅜ (543)

12⅞ (327)12⅞ (327)

12¾ (324)12¾ (324)

19 (483)19 (483)

42⅜ (1076)42⅜ (1076)

24⅝ (625)24⅝ (625)

109 (49.4)71 (32.2)

TERMINAL PAD DETAIL

BASE DETAIL

Catalog numbers 4632R1, 4632R1-E, 4782R4, 4782R4-E, 4903R1, and 4903R1-E

Catalog numbers 4783R1, 4783R1-E, 4784R1, and 4784R1-E

①Blade opens 160°. Select “-B90” option to limit blade travel to 90°.


③ For disconnect switches rated 900 amperes continuous, the 3-sec-ond rating is 25,000 amperes, RMS, symmetrical. For disconnect switches rated 630 amperes continuous, the 3-second rating is 16,000 amperes, RMS, symmetrical.


■ Applicable at 34.5 kV where the leakage distance to ground meets users requirements. See page 3 for leakage distance.


Station-Inverted Style


(610)



TERMINAL PAD DETAIL

Rating

Disconnect Gap,

Inches (mm)

Catalog Number

Dimensions in Inches (mm) [to nearest 1/8 inch (3 mm)] Net Wt.

Lb. (kg)kV Amperes, RMS

Nom. Max BIL Cont.Peak

Withstand① M N1 N2 R S T

14.4 15.5 110 630/900◆ 65 000 8 (203)18932R1 21¾ (552) 21¼ (540) 13¾ (349) 14⅜ (365) 7⅝ (194) 13¼ (337) 18½ (8.4)

18932R1-P 21¾ (552) 21¼ (540) 13¾ (349) 14⅜ (365) 7⅝ (194) 13¼ (337) 13 (5.9)

25 27 150 630/900◆ 65 000 11 (279)18933R1 24⅜ (619) 25¾ (654) 16¼ (413) 14⅞ (378) 9⅛ (232) 14⅝ (371) 21½ (9.8)

18933R1-P 24⅜ (619) 25¾ (654) 16¼ (413) 14⅞ (378) 9⅛ (232) 14⅝ (371) 15½ (7)

34.5 38 170■ 630/900◆ 65 000 11 (279) 18934R1 24⅜ (619) 25¾ (654) 16¼ (413) 14⅞ (378) 9⅛ (232) 14⅝ (371) 26½ (12)

34.5 38 150 630/900◆ 65 000 11 (279) 18934R1-P 24⅜ (619) 25¾ (654) 16¼ (413) 14⅞ (378) 9⅛ (232) 14⅝ (371) 15½ (7)

① The 3-second rating is 16,000 amperes, RMS, symmetrical.■ Listed BIL rating is S&C’s tested value. The IEEE rating for this dis-connect switch is 150 kV BIL.

◆ S&C rating for ambient temperatures through 40°C (57°F) with a minimum wind velocity of 1.4 m.p.h. The ANSI rating for this disconnect switch is 630 amperes continuous.


Overhead Pole-Top Style


3"x4" (76x102) to 4"x5" (102x127)

CROSSARM



Specifications - S&C Electric Company · Specification Bulletin 821-31. Table 1. Branch- and Main-Feeder Styles—Less Connectors Style Mounting Position Rating Disconnect Gap, Inches

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