The WLRH is a tough, versa-
tile resistor appropriate for the
following applications: motor
starting and speed control,
neutral grounding, lighting bal-
lasts, and A.C. compressor
buffers. This resistor can also
be used in heating applica-
tions. Choose from 45 models
ranging from 0.25 to 250
Ohms to best fit your specific
requirements.
Resistors feature nickel-
copper, nickel-chrome or
stainless steel wire wound in a
double helix around the center
core, depending on size and
model. All have ceramic cores
with a spiral groove to grip the
coiled wire. The 90° flat bus
style terminals are corrosion
resistant stainless steel.
Other mounting options are
available; contact us about
your specific requirements.
SPECIFICATIONS
Electrical
Current Rating:
1.0 - 32.0 Amps continuous
Wattage Rating:
Wattages can
be calculated using I
2
R from the
data in the standard resistance
value table. These are maxi-
mums for continuous duty allow-
ing a 375°C temperature rise.
Working Voltage:
Standard is 600
volts maximum to ground.
Resistance Tolerance:
±10%
Ohmic Values:
Ohmic values
listed in the table are at 25°C
±10%.
Mounting:
Resistors can be
mounted in various options.
WLRH Series
Heliohm Wirewound
7.25"
5.875"
1.5"
0.5"
3.75" 3"
2.25"
2.5"
5.5
S TA N D A R D R E S I S TA N C E VA L U E S
Part
Continuous
Number
Ohms Amp Rating
WLRHR25E
0.25 32
WLRHR30E
0.3
31
WLRHR33E
0.33 30
WLRHR35E
0.35 29
WLRHR50E
0.5
27
WLRHR70E
0.7
22
WLRH1R0E
1
18
WLRH1R4E
1.4
15.5
WLRH1R5E
1.5
15
WLRH1R9E
1.9
13.3
WLRH2R0E
2
13
WLRH2R2E
2.2
12.5
WLRH2R5E
2.5
12
WLRH3R2E
3.2
10.8
WLRH3R5E
3.5
10.5
WLRH4R0E
4
10
WLRH4R6E
4.6
9.2
WLRH4R8E
4.8
8.8
WLRH5R0E
5
8.5
WLRH5R5E
5.5
8
WLRH5R8E
5.8
7.7
WLRH6R0E
6
7.6
WLRH6R5E
6.5
7.4
Part
Continuous
Number
Ohms Amp Rating
8.75"
WLRH7R0E
7
7.3
9.75"
WLRH7R5E
7.5
7.2
WLRH8R0E
8
7.1
WLRH8R5E
8.5
7
WLRH8R6E
8.6
6.8
WLRH10RE
10
6.2
WLRH11RE
11
6.1
WLRH11R5E
11.5
5.9
WLRH12RE
12
5.8
WLRH15RE
15
5.3
WLRH20RE
20
4.6
WLRH27RE
27
3.6
WLRH36RE
36
3
WLRH45RE
45
2.5
WLRH62RE
62
2
WLRH80RE
80
1.8
WLRH100E
100
1.6
WLRH125E
125
1.4
WLRH150E
150
1.3
WLRH175E
175
1.2
WLRH200E
200
1.1
WLRH250E
250
1
OPTIONS
Inquires are welcome regarding
special resistance values, frames,
screened enclosures, heat shields
and packages.
Contact Ohmite directly for inquiries on this product.
Check product availability at
www.ohmite.com
Ohmite Mfg. Co.
1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com
45
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