Cutler Hammer/Westinghouse

Westinghouse FH Overload Heater Units

Cutler Hammer/Westinghouse
Heater Selection for Type A and B Overload Relays, Size 00-9

Each heater is identified by a catalog number stamped on one terminal. The heater application table indicates the range of full load motor current to which a given heater many be applied. Heaters should be selected on the basis of the actual full load current and service factor as shown on the motor nameplate or in the manufacture's published literature.

For Type A and B Overload Relays, Size 00, 0, 1 and 2 Starters

ize Starter Non Compensated Open Starters and Ambient Comp. Open and Encl. Starters Non-Compensating Enclosed Starters Heater Catalog Number
Block Type Overload Using 3 Heaters Single Pole Type Overload Block Type Overload Using 3 Heaters Single Pole Type Overload
Full Load Current of Motor (Amps.)
F
O
R

S
I
Z
E

2

S
T
A
R
T
E
R
S 		F
O
R

S
I
Z
E

1

S
T
A
R
T
E
R
S 		F
O
R

S
I
Z
E

0

S
T
A
R
T
E
R
S 		.25 - .27 .29 - .31 .24 - .25 .28 - .30 FH03
.28 - .31 .32 - .35 .26 - .28 .31 - .34 FH04
.32 - .34 .36 - .39 .29 - .31 .35 - .37 FH05
.35 - .38 .40 - .43 .32 - .35 .38 - .42 FH06
.39 - .42 .44 - .48 .38 - .39 .43 - .47 FH07
.43 - .46 .49 - .53 .40 - .43 .48 - .52 FH08
.47 - .50 .54 - .58 .44 - .47 .53 - .56 FH09
.51 - .55 .59 - .64 .48 - .51 .57 - .63 FH10
.56 - .62 .65 - .71 .52 - .57 .64 - .70 FH11
.63 - .68 .72 - .79 .58 - .63 .71 - .77 FH12
.69 - .75 .80 - .87 .64 - .70 .78 - .85 FH13
.76 - .83 .88 - .96 .71 - .77 .86 - .94 FH14
.84 - .91 .97 - 1.06 .78 - .85 .95 - 1.03 FH15
.92 - 1.00 1.07 - 1.16 .86 - .93 1.04 - 1.13 FH16
1.01 - 1.11 1.17 - 1.28 .94 - 1.03 1.14 - 1.25 FH17
1.12 - 1.22 1.29 - 1.41 1.04 - 1.16 1.26 - 1.38 FH18
1.23 - 1.34 1.42 - 1.55 1.14 - 1.25 1.39 - 1.52 FH19
1.35 - 1.47 1.56 - 1.71 1.26 - 1.37 1.53 - 1.67 FH20
1.48 - 1.62 1.72 - 1.87 1.38 - 1.51 1.68 - 1.83 FH21
1.63 - 1.78 1.88 - 2.06 1.52 - 1.65 1.84 - 2.01 FH22
1.79 - 1.95 2.07 - 2.26 1.66 - 1.81 2.02 - 2.21 FH23
1.96 - 2.15 2.27 - 2.48 1.82 - 1.99 222 - 2.43 FH24
2.16 - 2.35 2.49 - 2.72 2.00 - 2.19 2.44 - 2.66 FH25
2.36 - 2.58 2.73 - 2.99 2.20 - 2.39 2.67 - 2.92 FH26
2.59 - 2.83 3.00 - 3.28 2.40 - 2.63 2.93 - 3.21 FH27
2.84 - 3.11 3.29 - 3.60 2.64 - 2.89 3.22 - 3.53 FH28
3.12 - 3.42 3.61 - 3.95 2.90 - 3.17 3.54 - 3.87 FH29
3.43 - 3.73 3.96 - 4.31 3.18 - 3.47 3.88 - 4.22 FH30
3.74 - 4.07 4.32 - 4.71 3.48 - 3.79 4.23 - 4.61 FH31
4.08 - 4.39 4.72 - 5.14 3.80 - 4.11 4.62 - 4.9 FH32
4.40 - 4.87 5.15 - 5.6 4.12 - 4.55 5.0 - 5.5 FH33
4.88 - 5.3 5.7 - 6.2 4.56 - 5.0 5.6 - 6.0 FH34
5.4 - 5.9 6.3 - 6.8 5.1 - 5.5 6.1 - 6.6 FH35
6.0 - 6.4 6.9 - 7.5 5.6 - 5.9 6.7 - 7.3 FH36
6.5 - 7.1 7.6 - 8.2 6.0 - 6.6 7.4 - 8.0 FH37
7.2 - 7.8 8.3 - 9.0 6.7 - 7.2 8.1 - 8.7 FH38
7.9 - 8.5 9.1 - 9.9 7.3 - 7.9 8.8 - 9.7 FH39
8.6 - 9.4 10.0 - 10.8 8.0 - 8.7 9.8 - 10.5 FH40
9.5 - 10.3 10.9 - 11.9 8.8 - 9.5 10.6 - 11.7 FH41
10.4 - 11.3 12.0 - 13.1 9.6 - 10.5 11.8 - 12.7 FH42
11.4 - 12.4 13.2 - 14.3 10.6 - 11.5 12.8 - 14.0 FH43
12.5 - 13.5 14.4 - 15.7 11.6 - 12.6 14.1 - 15.3 FH44
13.6 - 14.9 15.8 - 17.2 12.7 - 13.8 15.4 - 16.6 FH45
15.0 - 16.3 17.3 - 18.9 13.9 - 15.1 16.7 - 18.3 FH46
16.4 - 18.0 19.0 - 20.8 15.2 - 16.7 18.4 - 20.0 FH47
18.1 - 19.8 20.9 - 22.9 16.8 - 18.3 20.1 - 21.9 FH48
19.9 - 21.7 23.0 - 25.2 18.4 - 20.2 22.0 - 23.9 FH49
21.8 - 23.9 25.3 - 27.6 20.3 - 22.2 24.0 - 26.2 FH50
24.0 - 26.2 27.7 - 30.3 22.3 - 24.3 26.3 - 28.8 FH51
26.3 - 28.7 30.4 - 33.3 24.4 - 26.6 28.9 - 31.4 FH52
28.8 - 31.4 33.4 - 36.4 26.7 - 29.1 31.5 - 34.5 FH53
31.5 - 34 36.5 - 39.9 29.2 - 32.0 34.6 - 37.9 FH54
34.6 - 37.9 40.0 - 43.9 32.1 - 35.2 38.0 - 41.9 FH55
38.0 - 41.5 35.3 - 38.5 42.0 - 45.0 FH56
41.6 - 45.0 38.6 - 42.3 FH57

For Type A and B Overload Relays, Size 3 and 4 Starters

Size Starter Ambient Compensated Encl. Starters Non-Compensating Encl. Starters Cat. No.
All Applications
Full Load Current of Motor Amps
F
O
R

S
I
Z
E

4

S
T
A
R
T
E
R
S 		F
O
R

S
I
Z
E

3

S
T
A
R
T
E
R
S 		12.8 - 14.1 11.9 - 13.0 FH68
14.2 - 15.5 13.1 - 14.3 FH69
15.6 - 17.1 14.4 - 15.9 FH70
17.2 - 18.9 16.0 - 17.4 FH71
19.0 - 20.8 17.5 - 19.1 FH72
20.9 - 22.9 19.2 - 21.1 FH73
23.0 - 25.2 21.2 - 23.2 FH74
25.3 - 27.8 23.3 - 25.6 FH75
27.9 - 30.6 25.7 - 28.1 FH76
30.7 - 33.5 28.2 - 30.8 FH77
33.6 - 37.5 30.9 - 34.5 FH78
37.6 - 41.5 34.6 - 38.2 FH79
41.6 - 46.3 38.3 - 42.6 FH80
46.4 - 50 42.7 - 46 FH81
51 - 55 47 - 51 FH82
56 - 61 52 - 56 FH83
62 - 66 57 - 61 FH84
67 - 73 62 - 67 FH85
74 - 78 68 - 72 FH86
79 - 84 73 - 77 FH87
85 - 92 78 - 84 FH88
93 - 101 85 - 91 FH89
102 - 110 92 - 99 FH90
111 - 122 100 - 110 FH91
123 - 129 111 - 122 FH92
130 - 133 123 - 128 FH93
129 - 133 FH94

For Type A and B Overload Relays, Size 5, 6 Starters

Compensated Overload Relay Heater Code Marking
Open Starter Enclosed Starter
Full Load Current of Motor (Amps.)
-
118 - 129
130 - 141
142 - 155
156 - 170
171 - 187
188 - 205
206 - 224
225 - 244
245 - 263
264 - 292
293 - 300 		-
118 - 129
130 - 141
142 - 155
156 - 170
171 - 187
188 - 205
206 - 224
225 - 244
245 - 263
264 - 270
- 		FH23
FH24
FH25
FH26
FH27
FH28
FH29
FH30
FH31
FH32
FH33
FH34
Size 6 (With 600/5 current transformers)
-
236 - 259
260 - 283
284 - 310
311 - 340
341 - 374
375 - 411
412 - 448
449 - 489
490 - 527
528 - 585
586 - 600 		-
236 - 259
260 - 283
284 - 310
311 - 340
341 - 374
375 - 411
412 - 448
449 - 489
490 - 527
528 - 540
- 		FH23
FH24
FH25
FH26
FH27
FH28
FH29
FH30
FH31
FH32
FH33
FH34
Size 7 and Larger: Advise Full Load Current