SPECIFICATIONS

CIRCUIT BREAKER & FUSED DISCONNECT SWITCH SIZES - 36 to 57 kW

 

kW

Volts*

Phase

 

Amp Draw

 

 

Breaker or

Copper

C o n d u i t

 

 

 

 

L1

 

L2

 

L3

 

Fuse Size

Wire Size

Size

 

 

 

 

 

 

 

 

 

 

 

 

 

36

208

1

173

 

173

 

-

225

4/0

1-1/2" (38 mm)

 

 

208

3

100

 

100

 

100

125

1

1-1/4" (32 mm)

 

 

240

1

150

 

150

 

-

200

3/0

1-1/2" (38 mm)

 

 

240

3

86.7

 

86.7

 

86.7

125

1

1-1/4" (32 mm)

 

 

380

3

54.7

 

54.7

 

54.7

70

4

1" (25 mm)

 

 

480

3

43.3

 

43.3

 

43.3

60

6

3/4" (19 mm)

 

 

600

3

34.7

 

34.7

 

34.7

50

8

1/2" (13 mm)

 

39

208

1

187.5

 

187.5

 

-

250

250 kcmil

2" (51 mm)

 

 

208

3

108

 

108

 

108

150

1/0

1-1/4" (32 mm)

 

 

240

1

163.5

 

163.5

 

-

225

4/0

2" (51 mm)

 

 

240

3

94

 

94

 

94

125

1

1-1/4" (32 mm)

 

 

380

3

59.3

 

59.3

 

59.3

90

3

1" (25 mm)

 

 

480

3

47

 

47

 

47

60

6

3/4" (19 mm)

 

 

600

3

37.6

 

37.6

 

37.6

50

8

1/2" (13 mm)

40

380

3

61.6

 

61.6

 

61.6

90

3

1" (25 mm)

40.5

208

3

112.5

 

112.5

 

112.5

150

1/0

1-1/4" (32 mm)

 

 

240

3

97.5

 

97.5

 

97.5

125

1

1-1/4" (32 mm)

 

 

480

3

48.8

 

48.8

 

48.8

70

4

1" (25 mm)

 

 

600

3

39

 

39

 

39

50

8

3/4" (19 mm)

45

208

3

125

 

125

 

125

175

2/0

1-1/2" (38 mm)

 

 

240

1

188

 

188

 

-

250

250 kcmil

2" (51 mm)

 

 

240

3

108

 

108

 

108

150

1/0

1-1/4" (32 mm)

 

 

380

3

68.6

 

68.6

 

68.6

90

3

1" (25 mm)

 

 

480

3

54

 

54

 

54

70

4

1" (25 mm)

 

 

600

3

43.4

 

43.4

 

43.4

60

6

3/4" (19 mm)

54

208

3

150

 

150

 

150

200

3/0

2" (51 mm)

 

 

240

3

130

 

130

 

130

175

2/0

1-1/2" (38 mm)

 

 

380

3

82.0

 

82.0

 

82.0

125

1

1-1/4" (32 mm)

 

 

480

3

65

 

65

 

65

90

3

1" (25 mm)

 

 

600

3

52

 

52

 

52

70

4

1" (25 mm)

57

208

3

158.4

 

158.4

 

158.4

225

4/0

2" (51 mm)

 

 

240

3

137.3

 

137.3

 

137.3

200

3/0

2" (51 mm)

 

 

380

3

86.7

 

86.7

 

86.7

125

1

1-1/4" (32 mm)

 

 

480

3

68.6

 

68.6

 

68.6

90

3

1" (25 mm)

 

 

600

3

54.9

 

54.9

 

54.9

70

4

1" (25 mm)

 

 

 

 

 

 

 

 

 

 

 

 

 

Wire size is based on THHN wire for branch circuit protection at .91 derate factor. Circuit breakers and fused disconnects are to be mounted remote and wired by contractor. Sizes are based on the 2002 NEC table 310-16. Conduit size based on conductors plus ground wire sizing per Table C1 from Appendix C.

Only 6, 7 & 9 kW models can be field converted to single or three phase (open delta on 3 phase). Larger branch circuit required than for balanced 3 phase of equal kW. Balanced 3 phase available, consult factory.

NOTE: 250 kcmil maximum wire size for terminal block.

7

Form No. EBOOSTERM-0406

Page 9
Image 9
Hatco IMPERIAL S manual Circuit Breaker & Fused Disconnect Switch Sizes 36 to 57 kW