Ohmite Powr-Rib Edgewound Data Sheet

Ohmite Mfg. Co. 1600 Golf Rd., Suite 850, Rolling Meadows, IL 60008 • Tel. 1-866-9-OHMITE • Fax [phone] • www.ohmite.com • [e-mail] 41

Powr-Rib® Edgewound

2.063" -0/+.187

52.400 mm -0/+4.763

2.313"

58.750 mm

1.00"

25.400 mm

0.531"

13.494 mm

17.875" ±.063

454.02 mm

16.250" ±.063

412.75 mm

1.00"

25.400 mm

0.750"

19.050 mm

0.531"

13.494 mm

Terminal 2172B (30 amps & more)

Terminal 2172G (29 amps & less)

PFE5K
Edgewound

1.00"

25.400 mm

0.531"

13.494 mm

17.875" ±.063

454.02 mm

16.250" ±.063

412.75 mm

1.00"

25.400 mm

0.750"

19.050 mm

0.531"

13.494 mm

PFR5K
Round wire

2.625" -0/+.187

66.67 mm -0/+4.763

Terminal 2175

(standard on

8.3 amps & less)

Terminal 2176

(optional for 90

°

terminal mounting)

1.688"

42.875 mm

A

B

A

B

Standard:

Standard:

         

Style

PFE = Edgewound
PFR = Roundwire

# of
Sections

2 5
3 6
4 7
8

Tolerance

K = 10%

Ohms

R100 = 0.10
1R00 = 1.0
10R0 = 10

RoHS Compliant

Edgewound Round Wire Power Resistors

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 resistance
with lower power capacity is
required use our round wire
design.

Constructed of a heavy
resistance alloy mounted on
ceramic insulators and sup­ported by a metal mounting
bracket. Metal parts, except
for the resistance element,
are heavily plated to prevent
oxidation at high operating
temperatures and to prevent
corrosion. The mounting bar is
slotted on each end to facili­tate installation. Edgewound
units provide clamp-type termi­nals, permitting a reliable con­nection which can be moved
along the resistive element to
obtain intermediate values.

All values for reference only; Consult factory for details.

S P E C I F I C A T I O N S

Electrical
Current Rating: Continuous duty

O R D E R I N G I N F O R M A T I O N

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

S T O C K P A R T N U M B E R S F O R S T A N D A R D R E S I S T A N C E

EDGEWOUND
Ohms Part # Amps

0.1  PFE5KR100 100

0.12  PFE5KR120 91

0.14  PFE5KR140 89

0.16  PFE5KR160 78

0.18  PFE5KR180 75

0.22  PFE5KR220 68

0.25  PFE5KR250 63

0.3  PFE5KR300 57

0.33  PFE5KR330 54

0.37  PFE5KR370 50

0.5  PFE5KR500 47

0.6  PFE5KR600 43

0.67  PFE5KR670 41

0.75  PFE5KR750 39
1  PFE5K1R00 33

1.3  PFE5K1R30 29

1.6  PFE5K1R60 26

2.2  PFE5K2R20 18.4

ROUNDWIRE
Ohms Part # Amps

11  PFR5K11R0 8.3

13  PFR5K13R0 7.6
17  PFR5K17R0 6.6
20  PFR5K20R0 5.9
25  PFR5K25R0 5.1

 = Most popular stock values

 = Stock values

 = Non-stock values subject

to minimum handling
charge per item.

±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.

Edgewound units have clamp-

type terminals which permits
a reliable connection and can
be moved along the resistive
element to obtain intermediate
values.

Ordering Information

See Part Number chart for stan-

dard resistance values when
ordering.

2.8  PFE5K2R80 16.3

3.5  PFE5K3R50 14.6

4.5  PFE5K4R50 12.7

5.4  PFE5K5R40 11.8

6.8  PFE5K6R80 10.3

8.5  PFE5K8R50 9.4

40 Ohmite Mfg. Co. 1600 Golf Rd., Suite 850, Rolling Meadows, IL 60008 • Tel. 1-866-9-OHMITE • Fax [phone] • www.ohmite.com • [e-mail]

0 8 0 A N D 0 3 0 T Y P E S E D G E W O U N D “ P O W R - R I B ” R E S I S T O R S

STANDARD*
Size* (No. of Insulator-Sections Long) 2 3 4 5 6 7 8

Dimension A in. 8.875 11.875 14.875 17.875 20.875 23.875 26.875
mm (225.425) (30.163) (377.825) (454.025) (530.225) (606.425) (682.625)

Dimension B in. 7.250 10.250 13.250 16.250 19.250 22.250 25.250
mm (184.150) (31.750) (336.550) (412.75) (488.950) (565.150) (641.350)

Max. Amps Ohms Ohms Ohms Ohms Ohms Ohms Ohms

100 .033 .057 .080 .100 .120 .140 .160
91 .040 .070 .100 .120 .140 .160 .180
89 .046 .078 .110 .140 .170 .200 .230
78 .052 .088 .120 .160 .190 .220 .250
75 .060 .100 .140 .180 .210 .250 .300

68 .070 .120 .180 .220 .260 .300 .340
63 .080 .130 .190 .250 .300 .350 .400
57 .100 .160 .230 .300 .360 .420 .480
54 .110 .180 .250 .330 .400 .470 .540
50 .120 .200 .280 .370 .450 .530 .610

47 .170 .280 .380 .500 .600 .700 .800
43 .210 .330 .460 .600 .720 .850 .980
41 .230 .360 .510 .670 .800 .930 1.06
39 .260 .420 .580 .750 .900 1.05 1.20
33 .350 .560 .770 1.00 1.20 1.40 1.60

29 .450 .730 1.00 1.30 1.50 1.75 2.00
26 .560 .900 1.20 1.60 1.90 2.20 2.50

18.4 .690 1.20 1.70 2.20 2.70 3.10 3.50

16.3 .880 1.50 2.20 2.80 3.40 4.00 4.60

14.6 1.10 1.90 2.70 3.50 4.30 5.10 5.90

12.7 1.40 2.40 3.50 4.50 5.50 6.50 7.50

11.8 1.70 2.90 4.20 5.40 6.60 7.80 9.00

10.3 2.10 3.70 5.30 6.80 8.30 9.80 11.3

9.4 2.70 4.60 6.50 8.50 10.40 12.3 14.2

P F R T Y P E R O U N D - W I R E “ P O W R - R I B ” R E S I S T O R S

8.3 3.4 5.9 8.5 11.0 13.5 16.0 18.5

7.6 4.1 7.1 10.0 13.0 15.9 18.8 21.7

6.6 5.3 9.2 13.0 17.0 20.8 24.6 28.4

5.9 6.3 10.9 15.4 20.0 24.5 29.0 33.5

5.1 7.9 13.6 19.3 25.0 30.7 36.4 42.1

*Standard 5-section units are stocked; part numbers are listed on previous page.

Ohmite Mfg. Co. 1600 Golf Rd., Suite 850, Rolling Meadows, IL 60008 • Tel. 1-866-9-OHMITE • Fax [phone] • www.ohmite.com • [e-mail] 41