Approximate Dimensions

Class 8606, 8630, 8640 / Refer to Catalog 8600CT9601

Approximate Dimensions—Not for Construction

Class 8606

Autotransformer

note

H = Height, W = Width, D = Depth

Class 8606—Autotransformer

NEMA
Size

Dim.

Open

NEMA Type 1 / 12 Enclosure

NEMA Type 4 Enclosure

Non-Combo or Combo, with Circuit Breaker

Combo, with Disconnect Switch

Non-Combo or Combo, with Circuit Breaker

Combo, with Disconnect Switch

in.

mm

in.

mm

in.

mm

in.

mm

in.

mm

2

H

43

1092

52

1320

52

1320

52

1320

52

1320

W

22

559

25

635

25

635

25

635

25

635

D

8

203

10

254

10

254

10

254

10

254

3 or 4

H

63

1600

70 [1]

1778

70  [1]

1778

75 [1]

1778

75  [1]

1778

W

28

711

32

813

32

813

32

813

32

813

D

9

229

16

406

16

406

16

406

16

406

5

H

63

1600

70  [1]

1778

90  [1]

2286

75  [1]

1778

95  [1]

2413

W

28

711

32

813

36

914

32

813

36

914

D

9

229

16

406

16

406

16

406

16

406

6

H

56

1422

90  [1]

2286

90  [1]

2286

98  [1]

2489

98  [1]

2489

W

30

762

34

864

64

1626

34

864

64

1626

D

14

354

20

508

24

610

20

508

24

610

Class 8630

Wye-Delta

Class 8630—Wye-Delta, Open Transition

NEMA
Size

Dim.

Open

NEMA Type 1 / 12 Enclosure

NEMA Type 4 Enclosure

Non-Combo

Combo

Non-Combo

Combo

in.

mm

in.

mm

in.

mm

in.

mm

in.

mm

1YD
or
2YD

H

21

553

25

635

25

635

25

635

W

21

553

23

584

23

584

23

584

D

7

178

8

203

8

203

8

203

3YD
or
4YD

H

42

1067

48

1219

49

1245

48

1219

49

1245

W

25

635

28

712

30

762

28

712

30

762

D

7

178

8

203

11

279

8

203

11

279

5YD
or
6YD

H

62

1576

90  [1]

2286

90 [1]

2286

98  [1]

2489

98  [1]

2489

W

29

737

36

914

36

914

36

914

36

914

D

10

254

16

406

16

406

16

406

16

406

Class 8630—Wye-Delta, Closed Transition

NEMA
Size

Dim.

Open

NEMA Type 1 / 12 Enclosure

NEMA Type 4 Enclosure

Non-Combo

Combo

Non-Combo

Combo

in.

mm

in.

mm

in.

mm

in.

mm

in.

mm

1YD
or
2YD

H

21

553

25

635

25

635

25

635

W

21

553

23

584

23

584

23

584

D

14

354

16

406

16

406

16

406

3YD
or
4YD

H

42

1067

48

1219

49

1245

48

1219

49

1245

W

25

635

28

712

30

762

28

712

30

762

D

14

354

16

406

18

457

16

406

18

457

5YD
or
6YD

H

80

2032

90  [1]

2286

90  [1]

2286

98  [1]

2489

98  [1]

2489

W

30

762

36

914

36

914

36

914

36

914

D

12

305

16

406

16

406

16

406

16

406

Class 8640

Part Winding

Class 8640—Part Winding

NEMA
Size

Dim.

Open

Enclosed—NEMA Type 1 / 4 / 12

Non-Combo

Combo, with
Circuit Breaker

Combo, with
Disconnect Switch

in.

mm

in.

mm

in.

mm

in.

mm

1PW
or
2PW

H

21

553

25

635

34

853

25

635

W

21

553

23

584

19

483

23

584

D

6

152

8

203

11

279

8

203

3PW

H

42

1067

48

1219

44

1118

52

1321

W

26

660

28

712

30

762

25

635

D

7

178

8

203

12

305

11

279

4PW

H

42

1067

48

1219

44

1118

78 [1]

1981

W

26

660

28

712

30

762

32

813

D

7

178

8

203

12

305

16

406

5PW

H

35

889

44

1118

78 [1] [2]

1981

78  [1] [2]

1981

W

22

559

24

610

36

914

36

914

D

10

254

12

305

16

406

16

406

6PW

H

49

1245

64

1626

90  [1]

2286

W

24

610

28

712

64

1626

D

11

279

16

406

24

406

 

Combination Starter Form Reference

Circuit Breaker: Y791, Y7911
Nonfusible Disconnect Switch: Y792, Y7910
Fusible Disconnect Switch: Y793-Y799

Refer to Forms—Reduced Voltage Controllers Only for a complete listing of Forms for combination devices.

Footnotes

  1. Free-standing enclosure.
  2. Subtract 8 in. from the height for a Type 1 or 12 enclosure.

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