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Bridges Electric™ Topper® Series

Technical Data

Topper Switch

Standard features include:

  • Plug-in Saf-T-Gap interrupters

  • Pole-top mounting

  • Copper-bronze hot parts

  • 30' (9.1 meters) of operating shaft

  • Torsional operating mechanism

  • Tinned terminal pads

  • Tinned terminal pads

  • 900 A continuous current

  • 900 A interrupting (38 kV has 600 A interrupting)

  • 40,000 A momentary current

  • 25,000 A three-second

  • Fault close is two times 20,000 A symmetrical

Options include:

  • Center phase (only) arrester brackets (i.e., 1272-30A)

  • Extra-length of pipe (i.e., 1272-40)

  • Porcelain operating shaft insulator (i.e., 1272-31)

  • Polymer operating shaft insulator (i.e., 1272-35)

Phase-Over-Phase Topper Switch

Phase-Over-Phase Topper Switch Dimensions

Topper Switch Dimensions in Inches (mm)

Catalog
Number

Nominal
kV

kV
BIL

A

B

C

D

E

Insulator3

1272-30

15

110

25.7 (653)

15 (381)

17.4 (442)

24 (610)

18.3 (465)

2 1/4"
D.B.C.

1273-30

25

150

28.7 (729)

18 (457)

19.4 (493)

27 (686)

20.3 (516)

2 1/4"
D.B.C.

1292-30

15

110

25.7 (653)

15 (381)

19.4 (493)

24 (610)

20.3 (516)

3" D.B.C. NEMA

1293-30

25

150

28.7 (729)

18 (457)

23.4 (594)

27 (686)

24.3 (617)

3" D.B.C. NEMA

1294-30

38

200

36.6 (930)

24 (610)

31.2 (792)

34 (864)

32.1 (815)

3" D.B.C. NEMA

Topper Switch Dimensions in Inches (mm)

Catalog
Number

Nominal
kV

kV
BIL

F1

G2

H

J

K

L

Insulator3

1272-30

15

110

10.7(272)

15.5 (394)

8 (203)

43.7 (1,110)

28.7 (729)

25.8 (655)

2 1/4" D.B.C.

1273-30

25

150

12.7 (323)

18.3 (465)

10 (254)

47.7 (1,212)

30.7 (780)

25.8 (655)

2 1/4" D.B.C.

1292-30

15

110

14.6 (371)

16.9 (429)

10 (254)

47.7 (1,212)

30.7 (780)

25.8 (655)

3" D.B.C. NEMA

1293-30

25

150

18.5 (470)

22.5 (572)

14 (356)

55.7 (1,415)

30.7 (780)

25.8 (655)

3" D.B.C. NEMA

1294-30

38

200

22.4 (569)

30.8 (782)

18 (457)

71.2 (1,808)

42.5 (1,080)

34.7 (881)

3" D.B.C. NEMA

Footnotes:
1 Minimum metal-to-metal, switch open
2 Minimum metal-to-metal, switch closed
3 2 1/4" D.B.C. polymer insulators are optional (i.e., 1262-30)/3" D.B.C. polymer insulators are optional (i.e., 1282-30)

Crossarm Topper Switch

Standard features include:

  • Plug-in Saf-T-Gap interrupters

  • Pole-top or underbuild mounting

  • Copper-bronze hot parts

  • 30' (9.1 meters) of operating shaft

  • Torsional operating mechanism

  • Lift bracket (removable)

  • Tinned terminal pads

  • 900 A continuous current

  • 900 A interrupting (38 kV has 600 A interrupting) 40,000 A momentary current

  • 40,000 A momentary current

  • 25,000 A three-second

  • Fault close is two times 20,000 A symmetrical

Options include:

  • Arrester brackets (i.e., 1272X-30A)

  • Extra-length of pipe (i.e., 1272X-40)

  • Porcelain operating shaft insulator (i.e., 1272X-31)

  • Polymer operating shaft insulator (i.e., 1272X-35)

Crossarm Topper Switch

Crossarm Topper Switch Dimensions

Crossarm Topper Switch

Crossarm Topper Switch Dimensions in Inches (mm)

Catalog
Number

Nominal
kV

kV
BIL

A

B

C

D

E

Insulator3

1272X-30

15

110

25.7 (653)

15 (381)

8
(203)

25.8 (655)

35.7 (907)

2 1/4"
D.B.C.

1273X-30

25

150

28.7 (729)

18 (457)

10 (254)

28.8 (732)

37.7 (958)

2 1/4"
D.B.C.

1292X-30

15

110

25.7 (653)

15 (381)

10 (254)

25.8 (655)

37.7 (958)

3" D.B.C. NEMA

1293X-30

25

150

28.7 (729)

18 (457)

14 (356)

28.8 (732)

41.9 (1,064)

3" D.B.C. NEMA

1294X-30

38

200

34.8 (881)

24 (610)

18 (457)

36.6 (930)

56.1 (1,425)

3" D.B.C. NEMA

Crossarm Topper Switch Dimensions in Inches (mm)

Catalog
Number

Nominal
kV

kV
BIL

F1

G2

H

J

Insulator3

1272X-30

15

110

91.6
(2,327)

13.9 (353)

29 (737)

62.9 (1,598)

2 1/4"
D.B.C.

1273X-30

25

150

95.5
(2,426)

15.4 (391)

29 (737)

62.9 (1,598)

2 1/4"
D.B.C.

1292X-30

15

110

95.5
(2,426)

15.8 (401)

29 (737)

62.9 (1,598)

3" D.B.C.
NEMA

1293X-30

25

150

103.5 (2,629)

19.8 (503)

29 (737)

62.9 (1,598)

3" D.B.C.
NEMA

1294X-30

38

200

127.1 (3,228)

23.3 (592)

33 (838)

70.9 (1,801)

3" D.B.C.
NEMA

Footnotes:
1 Minimum metal-to-metal, switch open
2 Minimum metal-to-metal, switch closed
3 2 1/4" D.B.C. polymer insulators are optional (i.e., 1262X-30)/3" D.B.C. polymer insulators are optional (i.e., 1282X-30)

Vertical Topper Switch

Standard features include:

  • Plug-in Saf-T-Gap interrupters

  • For riser pole or tie switch

  • Copper-bronze hot parts

  • 30' (9.1 meters) of operating shaft

  • Torsional operating mechanism

  • Tinned terminal pads

  • 900 A continuous current

  • 900 A interrupting (38 kV has 600 A interrupting)

  • 40,000 A momentary current

  • 25,000 A three-second

  • Fault close is two times 20,000 A symmetrical

Options include:

  • Arrester brackets (i.e., 1272V-30A)

  • Extra-length of pipe (i.e., 1272V-40)

  • Porcelain operating shaft insulator (i.e., 1272V-31)

  • Polymer operating shaft insulator (i.e., 1272V-35)

Vertical Topper Switch

Vertical Topper Switch Dimensions

Vertical Topper Switch

Vertical Topper Switch Dimensions in Inches (mm)

Catalog
Number

Nominal
kV

kV
BIL

A

B

C

D

E

Insulator1

1272V-30

15

110

25.7 (653)

15 (381)

17.4 (442)

24 (610)

17.3 (439)

2 1/4"
D.B.C.

1273V-30

25

150

28.7 (729)

18 (457)

19.4 (493)

27 (686)

19.3 (490)

2 1/4"
D.B.C.

1292V-30

15

110

25.7 (653)

15 (381)

19.4 (493)

24 (610)

19.3 (490)

3" D.B.C. NEMA

1293V-30

25

150

28.7 (729)

18 (457)

23.4 (594)

27 (686)

23.3 (592)

3" D.B.C. NEMA

1294V-30

38

200

36.6 (930)

24 (610)

31.2 (792)

34 (864)

32.1 (815)

3" D.B.C. NEMA

Vertical Topper Switch Dimensions in Inches (mm)

Catalog
Number

Nominal
kV

kV
BIL

F

G

H

Insulator1

1272V-30

15

110

8
(203)

41.6
(1,057)

25.8
(655)

2 1/4"
D.B.C.

1273V-30

25

150

10
(254)

45.6
(1,158)

28.8
(732)

2 1/4"
D.B.C.

1292V-30

15

110

10
(254)

45.6
(1,158)

25.8
(655)

3" D.B.C.
NEMA

1293V-30

25

150

14
(356)

53.6
(1,361)

28.8
(732)

3" D.B.C.
NEMA

1294V-30

38

200

18
(477)

34.7
(881)

34.7
(881)

3" D.B.C.
NEMA

Footnotes:
1 2 1/4" D.B.C. polymer insulators are optional (i.e., 1262P-30)/3" D.B.C. polymer insulators are 
  optional (i.e., 1282P-30).

Phase-Over-Phase Topper Switch

Standard features include:

  • Plug-in Saf-T-Gap interrupters

  • Phase-over-phase mounting

  • Copper-bronze hot parts

  • 30' (9.1 meters) of operating shaft

  • Torsional operating mechanism

  • Lift bracket

  • Tinned terminal pads

  • 900 A continuous current

  • 900 A interrupting (38 kV has 600 A interrupting)

  • 40,000 A momentary current

  • 25,000 A three-second

  • Fault close is two times 20,000 A symmetrical.

Options include:

  • Arrester brackets (i.e., 1272P-30A)

  • Extra-length of pipe (i.e., 1272P-40)

  • Porcelain operating shaft insulator (i.e., 1272P-31)

  • Polymer operating shaft insulator (i.e., 1272P-35).

Phase-Over-Phase Topper Switch

Phase-Over-Phase Topper Switch Dimensions

Phase-Over-Phase Topper Switch

Phase-Over-Phase Topper Switch Dimensions in Inches (mm)

Catalog
Number

Nominal
kV

kV
BIL

A

B

C

D

E

Insulator2

1272P-30

15

110

25.7 (653)

15 (381)

8 (203)

17.4 (442)

36 (914)

2 1/4"
D.B.C.

1273P-30

25

150

28.7 (729)

18 (457)

10 (254)

19.4 (493)

48 (1,219)

2 1/4"
D.B.C.

1292P-30

15

110

25.7 (653)

15 (381)

10 (254)

19.4 (493)

36 (914)

3" D.B.C. NEMA

1293P-30

25

150

28.7 (729)

18 (457)

14 (356)

23.4 (594)

48 (1,219)

3" D.B.C. NEMA

1294P-30

38

200

36.6 (930)

24 (610)

18 (457)

31.2 (792)

48 (1,219)

3" D.B.C. NEMA

Phase-Over-Phase Topper Switch Dimensions in Inches (mm)

Catalog
Number

Nominal
kV

kV
BIL

F

G

H

J

K1

Insulator2

1272P-30

15

110

94.2 (2,393)

28.3 (719)

12 (305)

24 (610)

16.7 (424)

2 1/4" D.B.C.

1273P-30

25

150

118.2 (3,002)

30.3 (770)

17 (432)

34 (864)

28.7 (729)

2 1/4" D.B.C.

1292P-30

15

110

94.2 (2,393)

30.3 (770)

12 (305)

24 (610)

16.7 (424)

3" D.B.C. NEMA

1293P-30

25

150

118.2 (3,002)

34.3 (871)

17 (432)

34 (864)

28.7 (729)

3" D.B.C. NEMA

1294P-30

38

200

124.6 (3,165)

41.8 (1,062)

17 (432)

34 (864)

19.7 (500)

3" D.B.C. NEMA

Footnotes:
1 Minimum metal-to-metal, switch open
2 2 1/4" D.B.C. polymer insulators are optional (i.e., 1262P-30)/3" D.B.C. polymer insulators are optional (i.e., 1282P-30).

72.5 kV Topper Switch

The Bridges Electric™ Topper® series 72.5 kV design. This three-phase, unitized switch incorporates the internal operating mechanism and single-point lift bracket.

Two interrupting versions are available. One version utilizes vacuum bottle interrupters for 1,200 A loop switching applications and the other version utilizes whip arms for 8 A line charging applications.

Ratings:

  • 72.5 kV, 350 kV BIL

  • 1,200 A continuous

  • 38 kA short-time withstand

  • 1,200 A loop switching

  • 8 A line charging.

Standard features include:

  • Motor driven

  • Three-phase, unitized switch

  • Easy instalaltion

  • No field adjustments

  • Interchangeable interrupters.

72.5 kV Topper Switch

72.5 kV Topper Switch


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