W-C-375-SUP-2 Circuit Breakers, Molded Case; Branch Circuit and ServiceThis specification covers the general requirements and test procedures for molded case circuit breakers which fall within the general parameters specified in table XVI which are specifically designed to provide service-entrance, feeder, meter-service, or branch circuit protection and rated at not more than 4,000 amperes and 600 volts ac, 60 hertz Hz see 3.1 and 6.1.

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Class

Interrupting rating

Poles

Range of current trip  4/

Symmetrical amperes  1/

Volts ac 60 Hz

10a  2/

10b

11a

11b

12a  2/

12b

12c

13a

13b

14a  2/

14b

15a  2/

15b

16a  3/

16b  3/

17a  3/

18a

19a

20a

5,000

5,000

7,500

7,500

10,000

10,000

10,000

14,000

14,000

22,000

22,000

65,000

65,000

100,000

100,000

200,000

18,000

14,000

14,000

22,000

18,000

14,000

25,000

22,000

22,000

120/240

240

120

240

120/240

240

277

277

277/480

120/240

240

120/240

240

480

600

600

240

480

600

240

480

600

240

480

600

1 or 2

2 or 3

1

2 or 3

1 or 2

2 or 3

1

1

1, 2, or 3

1 or 2

2 or 3

1 or 2

2 or 3

2 or 3

2 or 3

2 or 3

2 or 3

2 or 3

2 or 3

15-100

15-100

15-100

15-100

15-100

15-225

15-100

15-100

15-100

15-100

70-400

15-100

15-225

15-225

15-600

70-2,000

15-100

70-225

70-225