POWER WIREWOUND RESISTORS (PW)
 

Wirewound Power Resistors

 
Features
 
  • High resistivity to heat, small resistance temp.

  • Coefficient and the change in resistance with temperature being linear.

  • Resistance value unchanged after long use, good resistivity to short time overload.

  • Small in size but capable of carrying high power load.

  • Multi-terminal types and variable types available on request.

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DR Series
 
A tubular ceramic has two terminals, and is wound with copper wire or chromium alloy wire to provide the resistance and then coated with a high temperature, non-flammable resin. After the semi-finished part is cool and dry, insulation is applied through a high-temperature process and the mounts are attached. Since the winding is excellent, many taps can be added, impedance is low and the shape can be altered to produce many types.
 
DR series is suitable for educational modeling applications, load testing, industrial machinery, electric power distribution, instruments, automation control installations, etc. For custom specifications, please contact us to discuss the details.
 
DDR Type 10W - 1300W (Tubular Ceramic, Fixed-type)
 

 
Wattage
Rating
Dimensions (mm) Resistance
Range ([)
A B C D E F G H I J K L M N O
10W 45 12 6 15 4 54 2 9 3 62 28 1.0 0 6 10 1~3K[
20W 60 17 8 22 5 78 2 12 4 90 36 1.0 0 6 16 1~7K[
30W 80 17 8 22 5 100 2 12 4 112 36 1.0 0 6 16 1~10K[
40W 110 17 8 22 5 128 2 12 4 140 36 1.0 0 6 16 1~13K[
50W 110 25 16 30 8 150 5 18 6 166 58 1.2 6 0 27 0.1~25K[
60W 90 28 18 32 8 130 5 19 6 146 60 1.2 6 0 27 0.1~30K[
80W 110 28 18 32 8 150 5 19 6 166 60 1.2 6 0 27 0.1~40K[
100W 140 28 18 32 8 180 5 19 6 196 60 1.2 6 0 27 0.1~50K[
120W 160 28 18 32 8 200 5 19 6 216 60 1.2 6 0 27 0.1~60K[
150W 195 28 18 32 8 235 5 19 6 251 60 1.2 6 0 27 0.3~75K[
160W 185 35 24 36 10 225 5 19 8 245 76 1.6 6 0 34 0.3~80K[
200W 210 35 24 36 10 250 5 19 8 274 76 1.6 6 0 34 0.3~100K[
250W 210 40 25 38 12 250 5 20 8 274 78 1.6 6 0 34 0.5~125K[
300W 260 40 25 38 12 300 5 20 8 320 78 1.6 6 0 34 0.5~150K[
400W 330 40 25 38 12 370 5 20 8 395 78 1.6 6 0 34 0.5~200K[
500W 330 50 35 50 12 380 6 25 9 400 100 1.6 8 0 40 0.5~250K[
600W 400 50 35 50 12 450 6 25 9 470 100 1.6 8 0 40 0.8~300K[
700W 460 50 35 50 12 510 6 25 9 530 100 1.6 8 0 40 0.8~350K[
800W 460 60 40 55 15 515 6 30 10 535 110 1.6 10 0 50 0.8~400K[
1000W 540 60 40 55 15 595 6 30 10 615 110 1.6 10 0 50 1~500K[
1300W 650 65 42 62 15 702 6 30 10 722 115 1.6 10 0 50 1~750K[
Notice: All dimensions might be changed or modified, please refer to last updating specification.
 

Wirewound Power Resistors - Nonflammable Fixed

 
DCR Type 100W -250W (Tubular Ceramic, C - Shaped)
 

 
Wattage
Rating
Dimensions (mm) Resistance
Range ([)
A B C D
100W 28 140 165 30 20~20K[
120W 28 165 190 30 25~25K[
150W 28 195 220 30 30~30K[
200W 28 254 279 30 35~35K[
250W 28 300 325 30 40~40K[
Notice: All dimensions might be changed or modified, please refer to last updating specification.
 
How to Order
 
DDR 1000W 500[ J G
Product Type Rated Power Resistance Value ([) Resistance Tolerance Assembly Method
DDR type
DCR type
10W~1300W
100W~250W
([) indicates resistance value in units of ohms. J=±5%
K=±10%
2-8part assembly
G-Horizontal mount
N-No mounts.
Z-Vertical mount.
 
DNR Type 50W -1300W (Tubular Ceramic, Low Inductive)
 

 
Wattage
Rating
Dimensions (mm) Resistance
Range ([)
A B C D E F G H I J K L M N O
50W 110 25 16 30 8 150 5 18 6 166 58 1.2 6   27 0.1~10K [
60W 90 28 18 32 8 130 5 19 6 146 60 1.2 6   27 0.1~12K [
80W 110 28 18 32 8 150 5 19 6 166 60 1.2 6   27 0.1~16K [
100W 140 28 18 32 8 180 5 19 6 196 60 1.2 6   27 0.1~20K [
120W 160 28 18 32 8 200 5 19 6 216 60 1.2 6   27 0.1~24K [
150W 195 28 18 32 8 235 5 19 6 251 60 1.2 6   27 0.3~3K [
160W 185 35 24 36 10 225 5 19 8 245 76 1.6 6   34 0.3~35K [
200W 210 35 24 36 10 250 5 19 8 274 76 1.6 6   34 0.3~40K [
250W 210 40 25 38 12 250 5 20 8 274 78 1.6 6   34 0.5~50K [
300W 260 40 25 38 12 300 5 20 8 320 78 1.6 6   34 0.5~60K [
400W 330 40 25 38 12 370 5 20 8 395 78 1.6 6   34 0.5~80K [
500W 330 50 35 50 12 380 6 25 9 400 100 1.6 8   40 0.5~100K [
600W 400 50 35 50 12 450 6 25 9 470 100 1.6 8   40 0.8~120K [
700W 460 50 35 50 12 510 6 25 9 530 100 1.6 8   40 0.8~140K [
800W 460 60 40 55 15 515 6 30 10 535 110 1.6 10   50 0.8~160K [
1000W 540 60 40 55 15 595 6 30 10 615 110 1.6 10   50 1~200K [
1300W 650 65 42 62 15 702 6 30 10 722 115 1.6 10   50 1~260k[
Notice: All dimensions might be changed or modified, please refer to last updating specification.
 
DSR Type 20W -1300W (Tubular Ceramic, Variable)
 

 
Wattage
Rating
Dimensions (mm) Resistance
Range ([)
A B C D E F G H I J K L M N O
20W 60 17 8 22 5 78 2 12 4 90 36 1.0   6 16 1~1K [
30W 80 17 8 22 5 100 2 12 4 112 36 1.0   6 16 1~1.5K [
40W 110 17 8 22 5 128 2 12 4 140 36 1.0   6 16 1~2K [
50W 110 25 16 30 8 150 5 18 6 166 58 1.2 6   27 0.1~5K [
60W 90 28 18 32 8 130 5 19 6 146 60 1.2 6   27 0.1~6K [
80W 110 28 18 32 8 150 5 19 6 166 60 1.2 6   27 0.1~8K [
100W 140 28 18 32 8 180 5 19 6 196 60 1.2 6   27 0.1~10K [
120W 160 28 18 32 8 200 5 19 6 216 60 1.2 6   27 0.1~12K [
150W 195 28 18 32 8 235 5 19 6 251 60 1.2 6   27 0.3~15K [
160W 185 35 24 36 10 225 5 19 8 245 76 1.6 6   34 0.3~16K [
200W 210 35 24 36 10 250 5 19 8 274 76 1.6 6   34 0.3~20K [
250W 210 40 25 38 12 250 5 20 8 274 78 1.6 6   34 0.5~25K [
300W 260 40 25 38 12 300 5 20 8 320 78 1.6 6   34 0.5~30K [
400W 330 40 25 38 12 370 5 20 8 395 78 1.6 6   34 0.5~40K [
500W 330 50 35 50 12 380 6 25 9 400 100 1.6 8   40 0.5~50K [
600W 400 50 35 50 12 450 6 25 9 470 100 1.6 8   40 0.8~60K [
700W 460 50 35 50 12 510 6 25 9 530 100 1.6 8   40 0.8~70K [
800W 460 60 40 55 15 515 6 30 10 535 110 1.6 10   50 0.8~80K [
1000W 540 60 40 55 15 595 6 30 10 615 110 1.6 10   50 1~100K [
1300W 650 65 42 62 15 702 6 30 10 722 115 1.6 10   50 1~130K [
Notice: All dimensions might be changed or modified, please refer to last updating specification.
 
How to Order
 
DSR 400W 100 [ K G
Product Type Rated Power Resistance Value ([) Resistance Tolerance Assembly Method
DNR type
DSR type
50W~1300W
20W~1300W
([) indicates resistance value in units of ohms. J=±5%
K=±10%
2-8 part assembly
G- Horizontal mount
N- No mounts.
Z- Vertical mount.
 
Performance Specifications
 
Test Item Test Methods Characteristics
Resistance tolerance JIS-C-5202 5-1 Resistance Nominal Tolerance
1<=R 1>R±5% (J) ±10% (K)
Temperature coefficient JIS-C-5202 5-2 ±200PPM/°C MAX
Power rating load JIS-C-5202 5-4 GR/R≤ ±(0.5%+0.1[) Surface temperature up 350°C MAX
Short-term overload JIS-C-5202 5-5
1000% rated power 5 seconds
Free of appearance or structural irregularity
GR/R≤ ±(2%+0.1[)
Insulation resistance JIS-C-5202 5-6 500VDC 100M[ min
Dielectric withstanding voltage JIS-C-5202 5-7
1000VDC 1 minute Between terminal and anchor stand
Free of appearance or structural irregularity
GR/R≤ ±(0.1%+0.05[)
Terminal strength JIS-C-5202 6-1 8kg 30 seconds Free of appearance or structural irregularity
Resistor strength JIS-C-5202 6-2 30kg 30 seconds Free of appearance or structural irregularity
Vibration JIS-C-5202 6-3
1.5m/m 10 ~ 50 ~ 10 Hz/min X-Y-Z 2 hours each
Free of appearance or structural irregularity Surface coating crack GR/R≤ ±(1%+0.05[)
Thermal shock JIS-C-5202 7-3
Room temp 30 minutes ON-55°C 15 minutes OFF
Resistor free of structural irregularity GR/R≤ ±(2%+0.1[)
Humidity JIS-C-5202 7-5
40°C 90%RH 240 hours
Free of appearance or structural irregularity Surface coating crack GR/R≤ ±(3%+0.1[)
Load life JIS-C-5202 7-10
90 minutes ON - 30 minutes OFF500 hours
Free of appearance or structural irregularity Surface coating crack GR/R≤ ±(1%+0.05[)
Flame retardation JIS-C-5202 7-13-3-2
100% - 600% rated power load
US UL-94 flame retardation test V-0 grade noncombustible
REMARKS: 1. Resistance and resistance tolerance were tested in-house with micro resistance meter. 2. Resistor coating refers to UL-certified data provided by supplier.
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How to Order
 
DNR 600W 500[ J G
Product type Rated power Resistance value ([) Resistance tolerance Assembly method
DDR type
DNR type
DSR type
DCR type
10W~1300W
50W~1300W
20W~1300W
100W~250W
([) indicates resistance value in units of ohms. J=±5%
K=±10%
2-8 part assembly
G- Horizontal mount
N- No mounts.
Z- Vertical mount.
 

 


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