Current Transformers: Multi-Ratio, Rectangular, Split-Core

Class 4210 / Refer to Catalog 4210CT9701

Multi-Ratio Current Transformers

Models 151R, 312R

Dimensions for Models 151R and 312R

Model

Dimensions (inches)

A

B

C

151R

312R

6.88

4.50

12.25

11.00

4.12

2.38

Multi-Ratio Transformers, UR/cUR Recognized 60 Hz-Model 312R, 25–400 Hz-Model 151R

Window Size (inches)

Catalog

Number

(without
brackets) [1]

Current Rating [2]

(Amperes)

Relay
Class

[3]

ANSI Accuracy Classification – 60 Hz

Metering Class

Rating

Factor

30 oC

Ambient

B-0.1

B-0.2

B-0.5

B-0.9

B-1.8

4-1⁄2

312R601

312R122

312R202

312R302

312R402

 600:5MR

1200:5MR

2000:5MR

3000:5MR

4000:5MR

C100

C200

C400

C400

C400

1.5

1.5

1.5

1.5

1.33 

6-7⁄8

151R601

151R122

151R202

151R302

151R402

 600:5MR

1200:5MR

2000:5MR

3000:5MR

4000:5MR

C200

C400

C400

C400

C800

1.33

1.33

1.33

1.33

1.33

Multi-Ratio Taps (Models 151R, 312R, 781R, 786R)

Nominal Ratio

Current Ratio [4] (Amperes)

 600:5

600/500/450/400/300/250/200/150/100/50:5

1200:5

1200/1000/900/800/600/500/400/300/200/100:5

2000:5

2000/1600/1500/1200/1100/800/500/400/300:5

3000:5

3000/2500/2200/2000/1500/1200/1000/800/500/300:5

4000:5

4000/3500/3000/2500/2000/1500/1000/500

Rectangular Window Current Transformers

260R, 560R

Dimensions for Models 260R, and 560R

Model

Dimensions (inches)

A

B

C

D

E

260R

560R

2.13

3.75

4.25

7.45

2.12

1.13

4.88

5.53

 7.25

11.19

Rectangular Window Transformers, UR/cUR Recognized, 50–400 Hz

Window Size (inches)

Catalog

Number

(without
brackets) [1]

Current

Rating

(Amperes)

ANSI Accuracy Classification—60 Hz

Metering Class

Rating

Factor

30 oC

Ambient

B-0.1

B-0.2

B-0.5

B-0.9

B-1.8

2-1/8

x

4-1/4

260R101

260R151

260R201

100:5

150:5

200:5

1.2

1.2

1.2

2.4

2.4

1.2

1.33

1.33

1.33

260R301

260R401

260R601

300:5

400:5

600:5

0.6

0.6

0.3

0.6

0.6

0.3

1.33

1.33

1.33

260R801

260R122

260R162

800:5

1200:5

1600:5

0.3

0.3

0.3

0.3

0.3

0.3

1.33

1.33

1.33

260R202

260R252

260R302

260R402

2000:5

2500:5

3000:5

4000:5

0.3

0.3

0.3

0.3

0.3

0.3

0.3

0.3

1.33

1.0

1.0

1.0

3-3/4

x

7-7/16

560R401

560R501

560R601

560R751

560R801

400:5

500:5

600:5

750:5

800:5

1.2

0.6

0.6

0.6

0.6

1.2

1.2

0.6

0.6

0.6

2.4

2.4

1.2

1.2

1.2

2.4

1.2

1.2

2.4

2.4

2.4

1.33

1.33

1.33

1.33

1.33

560R102

560R122

560R152

560R162

560R202

1000:5

1200:5

1500:5

1600:5

2000:5

0.3

0.3

0.3

0.3

0.3

0.3

0.3

0.3

0.3

0.3

0.6

0.6

0.3

0.3

0.3

1.2

0.6

0.6

0.6

0.6

1.2

1.2

0.6

0.6

0.6

1.33

1.33

1.33

1.33

1.33

560R252

560R302

560R322

560R402

560R502

2500:5

3000:5

3200:5

4000:5

5000:5

0.3

0.3

0.3

0.3

0.3

0.3

0.3

0.3

0.3

0.3

0.3

0.3

0.3

0.3

0.3

0.3

0.3

0.3

0.3

0.3

0.6

0.6

0.6

0.6

0.6

1.33

1.33

1.33

1.33

1.33

Split-Core Current Transformers

Models 270R, and 273

Dimensions for Models 270R, and 273

Model

Dimensions (inches)

A

B

C

D

E

270R

273

3.56

3.50

8.81

6.25

3.00

3.27

9.25

9.25

13.06

11.28

Split-Core Transformers, Model 270R is UR/cUR Recognized, 60 Hz

Window Size (inches)

Catalog

Number

(without
brackets) [1]

Current Rating (Amperes)

ANSI Accuracy Classification — 60 Hz

Metering Class

Rating

Factor

30 oC

Ambient

B-0.1

B-0.2

B-0.5

B-0.9

B-1.8

3-9/16

x

8-3/16

270R401

270R501

270R601

400:5

500:5

600:5

1.33

1.33

1.33

3-9/16

x

8-3/16

270R801

270R102

270R122

270R152

270R162

800:5

1000:5

1200:5

1500:5

1600:5

1.2

1.2

1.2

1.2

1.2

2.4

1.2

1.2

1.2

1.2

2.4

2.4

2.4

2.4

1.33

1.33

1.33

1.33

1.33

270R202

270R252

270R302

270R402

270R502

2000:5

2500:5

3000:5

4000:5

5000:5

1.2

1.2

1.2

1.2

1.2

1.2

1.2

1.2

1.2

1.2

1.2

1.2

1.2

1.2

1.2

2.4

2.4

1.2

1.2

1.2

2.4

1.2

1.2

1.33

1.33

1.0

1.0

1.0

3-1/2

x

6-1/4

273201

273251

273301

273401

273501

200:5

250:5

300:5

400:5

500:5

2.4

2.4

2.4

1.33

1.33

1.33

1.33

1.33

273601

273801

273102

273122

273162

600:5

800:5

1000:5

1200:5

1600:5

2.4

1.2

1.2

1.2

1.2

2.4

2.4

1.2

1.2

1.2

2.4

2.4

2.4

1.33

1.33

1.33

1.33

1.33

273202

273252

273302

273402

2000:5

2500:5

3000:5

4000:5

1.2

1.2

1.2

1.2

1.2

1.2

1.2

1.2

1.2

1.2

1.2

1.2

2.4

2.4

1.2

1.2

2.4

1.2

1.33

1.33

1.00

1.00

Footnotes

  1. For mounting brackets, refer to Bushing Current Transformers 50–400 Hz
  2. For multi-ratio (MR) taps, refer to the Multi-Ratio Taps table.
  3. Relay class applies to nominal ratio only.
  4. Taps in acordance with ANSI C57.13 and NEMA SG-4.

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