POWER RESISTOR
Type EW
90W to 1500W
Edgewound, Fixed or Adjustable Vitreous Enamel or Silicone Coated
FEATURES:
END USE:
Rapid Cooling Motor Starting
Low Resistance Braking
High Current Capacity
CONSTRUCTION:
Crimped ribbon resistance wire is edgewound and locked to the ceramic core with Silicone or Vitreous Enamel Coating. The resistance wire is spot welded to the terminal bands.
ELECTRICAL:
Tolerance: ± 5%, 10% (resistance values < 1 ohm 10% only)
Power Rating: Based on 25 ° C free air rating
Derating: Vitreous - Derate linearly from 100% @ + 25 ° to 0% @ + 400 °
 Silicone - Derate linearly from 100% @ + 25 ° to 0% @ + 275 °
Overload: 10 times rated wattage for 5 seconds.
Max. Amps: To calculate use formula
Temperature Coefficient: ± 400PPM/ ° C
Dielectric Withstanding Voltage: 1000 VAC measured from terminal to mounting bracket.
RESISTOR HARDWARE:
Can be ordered separately

Type Watt
(Vit)*		 Core Length Core O.D. Core I.D. Min.
Ohms		 Max.
Ohms
inch
±.062		 mm
± 1.57		 inch
±.032		 mm
± .81		 inch
±.062		 mm
± .81
EW90 90 4.0 101.6 .500 12.5 .312 8.0 .021 12.0
EW100 100 3.5 88.9 .750 19.1 .500 12.7 .021 11.0
EW110 110 5.0 127 .750 19.1 .500 12.7 .029 16.0
EW135 135 6.0 152.4 .750 19.1 .500 12.7 .028 21.0
EW150 150 5.0 127 1.06 26.9 .750 19.1 .043 27.0
EW160 160 6.0 152.4 .750 19.1 .500 12.7 .038 26.0
EW180 180 6.5 165 .750 19.1 .500 12.7 .031 29.0
EW190 190 6.0 152.4 1.06 26.9 .750 19.1 .056 35.0
EW215 215 7.0 177.8 1.06 26.9 .750 19.1 .068 43.0
EW220 220 6.0 152.4 1.125 28.6 .750 19.1 .063 39.0
EW270 270 5.0 127 1.50 38.1 .750 19.1 .065 41.0
EW300 300 8.5 215.9 1.125 28.6 .750 19.1 .100 45.0
EW375 375 10.5 266.7 1.125 28.6 .750 19.1 .130 80.0
EW500 500 10.5 266.7 1.625 41.3 1.08 27.5 .190 117.0
EW750 750 12.0 304.8 2.50 63.5 1.75 44.5 .310 198.0
EW1000 1000 15.0 381 2.50 63.5 1.75 44.5 .410 258.0
EW1500 1500 20.0 508 2.50 63.5 1.75 44.5 .560 358.0
Consult factory for sizes not shown.
* Wattage for Silicone 30% less than shown
ORDERING INFORMATION
For silicone add letter "S". For Vitreous add "V". For Adjustable add "A" at end.
Example: 100W 10 ohm 5% Silicone coat
EW100S
10R0
J
Type
Resistance
Tolerance
4 digit. <100 use R for decimal. >100 4th digit is multiplier
J = 5%
K = 10%
TO ORDER PRODUCT
E mail: microohm@mail.com
Call Toll Free: 1-800-845-5167

home page product guide R
axial		 FP
flat oval		 TL
tubular lug 		HS chassis mount CW bathtub axial SU bathtub printed circuit PI
radial 		RX
vitreous axial		 CP
bare axial