January 2003
CA08101001E For more information visit: www.cutler-hammer.eaton.com
8-57
Safety Switches & Enclosed Circuit Breakers
8
Enclosed Circuit Breakers
Product Selection
Vol. 1, Ref. No. [0295]
Table 8-97. Industrial Circuit Breaker Selection
ᕃ
N.I.T.U. is non-interchangeable trip unit and I.T.U. is interchangeable trip unit.
ᕄ
Two-pole circuit breaker, or two poles of three-pole circuit breaker at 250V DC.
ᕅ
Not defined in W-C-375b.
ᕆ
Not suitable for use with 100A enclosures.
Circuit
Breaker
Type
Continuous
Ampere
Rating
at 40°C
No.
of
Poles
Volts Type
of
Trip
ᕃ
Federal
Spec.
W-C-375b
UL Listed Interrupting Rating rms Symmetrical Amperes
AC DC AC Ratings Volts DC
ᕄ
120 120/240 240 277 480 600 125 250 125/250
G-Frame
GHC
GHC
GHC
GHC
15 – 100
15 – 100
15 – 100
15 – 100
1
2, 3
1
2, 3
120
240
277
277/480
125
125/250
125
215/250
N.I.T.U. 12c, 13a
13b
12c, 13a
13b
65,000
—
—
—
—
—
—
—
—
65,000
—
—
—
—
14,000
14,000
—
—
—
14,000
—
—
—
—
14,000
—
14,000
—
—
—
—
—
—
14,000
—
14,000
GD 15 – 100 3 480 250 N.I.T.U. 13b — — 65,000 — 22,000 — — 10,000 —
F-Frame
ED
EDH
EDC
100 – 225
100 – 225
100 – 225
2, 3
2, 3
2, 3
240
240
240
125
125
125
N.I.T.U. 12b
14b
1
—
—
—
—
—
—
65,000
100,000
200,000
—
—
—
—
—
—
—
—
—
10,000
10,000
10,000
—
—
—
—
—
—
EHD
EHD
15 – 100
15 – 100
1
2, 3
277
480
125
250
N.I.T.U. 13a
13b
—
—
—
—
—
18,000
14,000
—
—
14,000
—
—
10,000
—
—
10,000
—
—
FDB
FDB
15 – 150
15 – 150
2, 3
4
600
600
250
250
N.I.T.U. 18a
ᕅ
—
—
—
—
18,000
18,000
—
—
14,000
14,000
14,000
14,000
—
—
10,000
10,000
—
—
FD
FD
FD
15 – 225
15 – 225
15 – 225
1
2, 3
4
277
600
600
125
250
250
N.I.T.U. 13a
22a
ᕅ
—
—
—
—
—
—
—
65,000
65,000
25,000
—
—
—
25,000
25,000
—
18,000
18,000
10,000
—
—
—
10,000
10,000
—
—
—
HFD
HFD
HFD
15 – 225
15 – 225
15 – 225
1
2, 3
4
277
600
600
125
250
250
N.I.T.U. 13a
22a
ᕅ
—
—
—
—
—
—
—
100,000
100,000
65,000
—
—
—
65,000
65,000
—
25,000
25,000
10,000
—
—
—
20,000
20,000
—
—
—
FDC
FDC
15 – 225
ᕆ
15 – 225
2, 3
4
600
600
250
250
N.I.T.U. 24a
ᕅ
—
—
—
—
200,000
200,000
—
—
100,000
100,000
35,000
35,000
—
—
20,000
20,000
—
—
J-Frame
JDB
JD
HJD
JDC
70 – 250
70 – 250
70 – 250
70 – 250
2, 3
2, 3, 4
2, 3, 4
2, 3, 4
600
600
600
600
250
250
250
250
N.I.T.U.
I.T.U.
I.T.U.
I.T.U.
22a
22a
22a
22a
—
—
—
—
—
—
—
—
65,000
65,000
100,000
200,000
—
—
—
—
35,000
35,000
65,000
100,000
18,000
18,000
25,000
35,000
—
—
—
—
10,000
10,000
22,000
22,000
—
—
—
—
K-Frame
DK
KDB
KD
HKD
KDC
250 – 400
100 – 400
100 – 400
100 – 400
100 – 400
2, 3
2, 3
2, 3, 4
2, 3, 4
2, 3, 4
240
600
600
600
600
250
250
250
250
250
N.I.T.U.
N.I.T.U.
I.T.U.
I.T.U.
I.T.U.
14b
23a
23a
23a
23a
—
—
—
—
—
—
—
—
—
—
65,000
65,000
65,000
100,000
200,000
—
—
—
—
—
—
35,000
35,000
65,000
100,000
—
25,000
25,000
35,000
50,000
—
—
—
—
—
10,000
10,000
10,000
22,000
22,000
—
—
—
—
—
L-Frame
LDB
LD
HLD
300 – 600
300 – 600
300 – 600
2, 3
2, 3, 4
2, 3, 4
600
600
600
250
250
250
N.I.T.U.
I.T.U.
I.T.U.
23a
23a
23a
—
—
—
—
—
—
65,000
65,000
100,000
—
—
—
35,000
35,000
65,000
25,000
25,000
35,000
—
—
—
22,000
22,000
25,000
—
—
—
M-Frame
MDL
HMDL
300 – 800
300 – 800
2, 3
2, 3
600
600
250
250
I.T.U.
I.T.U.
23a
23a
—
—
—
—
65,000
100,000
—
—
50,000
65,000
25,000
35,000
—
—
22,000
25,000
—
—
N-Frame
ND
HND
600 – 1200
600 – 1200
3, 4
3, 4
600
600
—
—
N.I.T.U.
N.I.T.U.
23a
23a
—
—
—
—
65,000
100,000
—
—
50,000
65,000
25,000
35,000
—
—
—
—
—
—
R-Frame
RD 800 – 2500 3, 4 600 — N.I.T.U. 24a — — 125,000 — 65,000 35,000 — — —
