PFE and PFR Series
Powr-Rib
®
Edgewound
Edgewound and Round Wire
Standard:
A
17.875"
±.063
454.02 mm
B
16.250"
±.063
412.75 mm
Terminal 2172B
(30 amps & more)
1.00"
25.400 mm
2.313"
58.750 mm
Terminal 2172G
(29 amps & less)
1.688"
42.875 mm
PFE5K
Edgewound
1.00"
25.400 mm
0.531"
13.494 mm
0.531"
13.494 mm
0.750"
19.050 mm
PFR5K
Round wire
1.00"
25.400 mm
Standard:
A
17.875"
±.063
454.02 mm
B
16.250"
±.063
412.75 mm
1.00"
25.400 mm
0.531"
13.494 mm
2.063" -0/+.187
52.400 mm -0/+4.763
Terminal 2175
(standard on
8.3 amps & less)
2.625" -0/+.187
66.67 mm -0/+4.763
Terminal 2176
(optional for 90
°
terminal mounting)
0.531"
13.494 mm
0.750"
19.050 mm
Designed in both Edgewound
and Round Wire formats,
these rugged resistors
can handle 700 to 1000
Watts of power. Specify our
Edgewound design for very
low resistance and high power
capacity. When higher resis-
tance with lower power capac-
ity is required use our Round
Wire design.
These resistors are con-
structed of a heavy resistance
alloy mounted on ceramic
insulators and supported by
a metal mounting bracket.
Metal parts, except for the
resistance element, are heav-
ily plated to prevent oxidation
at high operating temperatures
and to prevent corrosion. The
mounting bar is slotted on
each end to facilitate installa-
tion. Edgewound units provide
clamp-type terminals, permit-
ting a reliable connection
which can be moved along
the resistive element to obtain
intermediate values.
All values for reference only; Consult factory for details.
SPECIFICATIONS
Electrical
Current Rating:
Continuous duty
as listed on following page.
Wattage Rating:
700 to 1,000 (up
to 1,600 watts on special order)
Resistance Tolerance:
±10%
standard, ±5% available
Terminals:
Clamps, movable
along resistor wire for setting
intermediate resistance values
on Edgewound units (current
must be derated in proportion).
Temperature Coefficient:
±300 ppm/°C for resistors 50
amps and more
±500 ppm/°C for resistors 47
amps or less
Ohmic Values:
See chart on fol-
lowing page.
Mounting:
Metal mounting bar is
slotted on each end to facilitate
installation.
Short Term Overload:
10x rated
wattage for five seconds
Ordering Information
See Part Number chart for stan-
dard resistance values when
ordering.
O R D E R I N G I N F O R M AT I O N
RoHS Compliant
DERATING
100
Percent Rated Power
80
60
40
20
0
0
25
50 100 150 200 250 300 350
Ambient Temperature,
°C
PFE5KR100E
Style
PFE = Edgewound
PFR = Roundwire
# of
Tolerance
Sections
K = 10%
2 5
3 6
4 7
8
Ohms
R100 = 0.10
1R00 = 1.0
10R0 = 10
S TA N D A R D PA RT N U M B E R S
Ohms
EDGEWOUND
Part #
Watts Amps
Ohms
ROUNDWIRE
Part #
Watts Amps
0.1
0.12
0.14
0.16
0.18
0.22
0.25
0.3
0.33
0.37
0.5
0.6
0.67
0.75
1
1.3
1.6
2.2
2.8
3.5
4.5
5.4
6.8
8.5
PFE5KR100E
PFE5KR120E
PFE5KR140E
PFE5KR160E
PFE5KR180E
PFE5KR220E
PFE5KR250E
PFE5KR300E
PFE5KR330E
PFE5KR370E
PFE5KR500E
PFE5KR600E
PFE5KR670E
PFE5KR750E
PFE5K1R00E
1000 100
994 91
1100 89
973 78
1012 75
1017 68
992 63
975 57
962 54
925 50
1105 47
1109 43
1126 41
1141 39
1089 33
29
26
18.4
16.3
14.6
12.7
11.8
10.3
9.4
11
13
17
20
25
PFR5K11R0E
PFR5K13R0E
PFR5K17R0E
PFR5K20R0E
PFR5K25R0E
757
750
740
696
650
8.3
7.6
6.6
5.9
5.1
= Standard values
PFE5K1R30E 1093
PFE5K1R60E 1082
PFE5K2R20E 745
PFE5K2R80E 744
PFE5K3R50E 746
PFE5K4R50E 726
PFE5K5R40E 752
PFE5K6R80E 721
PFE5K8R50E 751
= Non-standard values subject
to minimum handling
charge per item.
Check product availability at
www.ohmite.com
48
Ohmite Mfg. Co.
1600 Golf Rd., Rolling Meadows, IL 60008 • 1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com
PFE and PFR Series
Powr-Rib
®
Edgewound
Edgewound and Round Wire
(continued)
P F E E D G E W O U N D “ P O W R - R I B ” E L E C T R I C A L I N F O R M AT I O N
Size* (No. of Insulator-Sections Long)
Dimension A
Dimension B
in.
mm
in.
mm
2
8.875
(225.425)
7.250
(184.150)
3
11.875
(30.163)
10.250
(31.750)
4
14.875
(377.825)
13.250
(336.550)
STANDARD*
5
17.875
(454.025)
16.250
(412.75)
6
20.875
(530.225)
19.250
(488.950)
7
23.875
(606.425)
22.250
(565.150)
8
26.875
(682.625)
25.250
(641.350)
Max. Amps
100
91
89
78
75
68
63
57
54
50
47
43
41
39
33
29
26
18.4
16.3
14.6
12.7
11.8
10.3
9.4
Ohms
.033
.040
.046
.052
.060
.070
.080
.100
.110
.120
.170
.210
.230
.260
.350
.450
.560
.690
.880
1.10
1.40
1.70
2.10
2.70
Ohms
.057
.070
.078
.088
.100
.120
.130
.160
.180
.200
.280
.330
.360
.420
.560
.730
.900
1.20
1.50
1.90
2.40
2.90
3.70
4.60
Ohms
.080
.100
.110
.120
.140
.180
.190
.230
.250
.280
.380
.460
.510
.580
.770
1.00
1.20
1.70
2.20
2.70
3.50
4.20
5.30
6.50
Ohms
.100
.120
.140
.160
.180
.220
.250
.300
.330
.370
.500
.600
.670
.750
1.00
1.30
1.60
2.20
2.80
3.50
4.50
5.40
6.80
8.50
Ohms
.120
.140
.170
.190
.210
.260
.300
.360
.400
.450
.600
.720
.800
.900
1.20
1.50
1.90
2.70
3.40
4.30
5.50
6.60
8.30
10.40
Ohms
.140
.160
.200
.220
.250
.300
.350
.420
.470
.530
.700
.850
.930
1.05
1.40
1.75
2.20
3.10
4.00
5.10
6.50
7.80
9.80
12.3
Ohms
.160
.180
.230
.250
.300
.340
.400
.480
.540
.610
.800
.980
1.06
1.20
1.60
2.00
2.50
3.50
4.60
5.90
7.50
9.00
11.3
14.2
P F R R O U N D - W I R E “ P O W R - R I B ” E L E C T R I C A L I N F O R M AT I O N
8.3
7.6
6.6
5.9
5.1
3.4
4.1
5.3
6.3
7.9
5.9
7.1
9.2
10.9
13.6
8.5
10.0
13.0
15.4
19.3
11.0
13.0
17.0
20.0
25.0
13.5
15.9
20.8
24.5
30.7
16.0
18.8
24.6
29.0
36.4
18.5
21.7
28.4
33.5
42.1
*Standard 5-section units are stocked; part numbers are listed on previous page.
Check product availability
using the Worldwide Inventory
Search at ohmite.com
Ohmite Mfg. Co.
1600 Golf Rd., Rolling Meadows, IL 60008 • 1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com
49
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