Current Transformers: Bushing, Auxiliary

Class 4210 / Refer to Catalog 4210CT9701

Bushing Current Transformers 50–400 Hz

Models 780 R, 781R, 785R, and 786R

Dimensions for Models 780R, 781R, 785R, and 786R

Model

T (inches)

780R

781R

785R

786R

3.38

3.38

6.75

6.75

Mounting Brackets

Model

Bracket

2NR

MB1

5NR

MB1

7RL

MB7

54R

Included

64R

MB10

66R

MB12

74R

MB16

76R

MB18

81X

MB81

100R

MB31

110R

MB32

120R

MB31

140R

MB32

151R

MB30

152R

MB30

170R

MB30

180R

MB9

200R

Included

201R

Included

202R

Included

203R

Included

210R

MB32

260R

Not Available

270R

Not Available

273

Not Available

Bushing Current Transformers

Window Size (inches)

Catalog
Number

Current  Rating [1]
(Amperes)

Relay Class

ANSI Accuracy Classification—60 Hz
Metering Class

Rating
Factor
30oC
Ambient

B-0.1

B-0.2

B-0.5

B-0.9

B-1.8

6-1⁄2

780R500

50:5

2.0

780R750

75:5

C10

1.2

2.4

2.0

780R101

100:5

C10

2.4

2.4

2.0

780R151

150:5

C20

0.6

1.2

2.0

780R201

200:5

C20

0.6

1.2

2.4

2.0

780R251

250:5

C20

0.6

0.6

1.2

2.4

2.0

780R301

300:5

C50

0.3

0.6

1.2

1.2

2.4

2.0

780R401

400:5

C50

0.3

0.3

0.6

1.2

1.2

2.0

780R501

500:5

C50

0.3

0.3

0.6

0.6

1.2

2.0

780R601

600:5

C100

0.3

0.3

0.3

0.6

0.6

2.0

780R751

750:5

C100

0.3

0.3

0.3

0.3

0.6

2.0

780R801

800:5

C100

0.3

0.3

0.3

0.3

0.6

2.0

780R102

1000:5

C100

0.3

0.3

0.3

0.3

0.3

2.0

780R122

1200:5

C200

0.3

0.3

0.3

0.3

0.3

2.0

780R152

1500:5

C200

0.3

0.3

0.3

0.3

0.3

2.0

780R162

1600:5

C200

0.3

0.3

0.3

0.3

0.3

2.0

780R202

2000:5

C200

0.3

0.3

0.3

0.3

0.3

2.0

780R252

2500:5

C200

0.3

0.3

0.3

0.3

0.3

2.0

780R302

3000:5

C200

0.3

0.3

0.3

0.3

0.3

2.0

780R402

4000:5

C200

0.3

0.3

0.3

0.3

0.3

1.5

6-1⁄2

781R601

600:5 MR

C100

0.3

0.3

0.3

0.6

0.6

2.0

781R122

1200:5 MR

C200

0.3

0.3

0.3

0.3

0.3

2.0

781R202

2000:5 MR

C200

0.3

0.3

0.3

0.3

0.3

2.0

781R302

3000:5 MR

C200

0.3

0.3

0.3

0.3

0.3

2.0

781R402

4000:5 MR

C200

0.3

0.3

0.3

0.3

0.3

1.5

6-1⁄2

785R500

50:5

C10

2.4

2.4

2.0

785R750

75:5

C20

1.2

1.2

2.0

785R101

100:5

C20

1.2

1.2

2.4

2.0

785R151

150:5

C50

0.6

0.6

1.2

2.4

_

2.0

785R201

200:5

C50

0.6

0.6

1.2

2.4

2.4

2.0

785R251

250:5

C50

0.3

0.6

1.2

1.2

2.4

2.0

785R301

300:5

C100

0.3

0.3

0.6

0.6

1.2

2.0

785R401

400:5

C100

0.3

0.3

0.3

0.6

1.2

2.0

785R501

500:5

C100

0.3

0.3

0.3

0.6

0.6

2.0

785R601

600:5

C200

0.3

0.3

0.3

0.3

0.6

2.0

785R751

750:5

C200

0.3

0.3

0.3

0.3

0.3

2.0

785R801

800:5

C200

0.3

0.3

0.3

0.3

0.3

2.0

785R102

1000:5

C200

0.3

0.3

0.3

0.3

0.3

2.0

785R122

1200:5

C400

0.3

0.3

0.3

0.3

0.3

2.0

785R152

1500:5

C400

0.3

0.3

0.3

0.3

0.3

2.0

785R162

1600:5

C400

0.3

0.3

0.3

0.3

0.3

2.0

785R202

2000:5

C400

0.3

0.3

0.3

0.3

0.3

2.0

785R252

2500:5

C400

0.3

0.3

0.3

0.3

0.3

2.0

785R302

3000:5

C400

0.3

0.3

0.3

0.3

0.3

2.0

785R402

4000:5

C400

0.3

0.3

0.3

0.3

0.3

1.5

6-1⁄2

786R601

600:5 MR

C200

0.3

0.3

0.3

0.3

0.3

2.0

786R122

1200:5 MR

C400

0.3

0.3

0.3

0.3

0.3

2.0

786R202

2000:5 MR

C400

0.3

0.3

0.3

0.3

0.3

2.0

786R302

3000:5 MR

C400

0.3

0.3

0.3

0.3

0.3

2.0

786R402

4000:5 MR

C400

0.3

0.3

0.3

0.3

0.3

1.5

Footnotes

  1. For multi-ratio (MR) taps, refer to Multi-Ratio Taps (Models 151R, 312R, 781R, 786R)

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