Power Oval Edge-Wound High Current Resistors (DOE)

High current oval edge wirewound resistor (DOE) is the best choice
when conditions demand top-notch performance.

Direct DOE Series are commonly used as a dynamic braking resistor on Transit applications. Built to perform in rugged environments, they feature corrosion resistant stainless steel insulator supports, solid nickel terminals, and special electroless nickel-plated solid copper terminal supports.

The resistance element is made of a stainless steel resistance alloy. Terminals are welded or silver brazed to the oval, spiral edge-wound resistance element. Toothed ceramic insulators isolate the resistance element from the center support. Ceramic end bushings insulate the center support from the mountings.

Order individual replacement units or entire grids with various mounting configurations.

Downloads complete PDF version Power Oval Edge Wirewound High Current Resistor (DOE). Contact us with your specific needs.

Options :

  1. Terminal blocks, thermal switches, conduit knockouts, fusing, fans,
    and other customer specified requirements are available on request.
Features :
  1. Power rating from 525W to 1750W
  2. Resistance nominal tolerance ±10%(K)
  3. Resistance value range 0.0426Ω to 6.13Ω,
  4. suitable for high current applications
Applications :
  1. Power Industrial Machinery Resistors.
  2. Dynamic Braking Resistors, Load Banks, Motor Starting Resistor.
  3. Plugging Resistor, Power Load Measurements, Electric Distribution Resistors.
  4. Instrumentation, Automation Control Installations.
Oval Edge-Wound Dimensions (DOE 525W - 1750W)
High Current Oval Edge-Wound (DOE)
High Current Oval Edge-Wound (DOE)
High Current Oval Edge-Wound (DOE) Dimensions
High Current Oval Edge-Wound (DOE) Dimensions
Power Rating A B
mm inch mm inch
525W 295.3 11.375 11 5/8 244.5 9.625 9 5/8
850W 385.7 15.1875 15 3/16 334.9 13.1875 13 3/16
1200W 469.9 18.5 18 1/2 419.1 16.5 16 1/2
1450W 555.6 21.875 21 7/8 504.8 19.875 19 7/8
1750W 638.2 25.125 25 1/8 587.4 23.125 231/8
Electrical Characteristics (DOE)
Test Item Specification Test Methods
Ambient Temperatures Ambient Temperature: -55°C ~350°C.
Derated current rating:
95% for 50°C ambient, 90% for 75°C ambient,
85% for 100°C ambient, 10% for 350°C ambient.
Standard ratings are based on maximum ambient temperatures of 40°C.
Continuous current ratings and temperatures Rise 375°C Max. The rating of continuous current is based on a 375°C temperature rise at ambient temperatures of 40°C.
Resistance tolerance Resistance Nominal Tolerance ±10%(K) for all units;
as low as ±3% if required.
JIS-C-5202 5-1
Thermal Shock Δ≤±(2%R+0.1Ω) JIS-C-5202 7.3,
Room temp 30 minutes, -55°C 15 minutes.
Terminal strength Δ≤±(2%R+0.1Ω) JIS-C-5202 6.1, 45N, 30S
Short-term Overload Δ≤±(2%R+0.1Ω) JIS-C-5202 5.5, 10PR, 5S.
  • Resistance and resistance tolerance were tested in-house at room temperature (25°C) with micro resistance meter.
  • Ambient Temperature: refers to the temperature inside the subject and around the specimen, not to the air-temperature outside the subject.

Technical Specification (DOE)
Item Specification
Working Voltage Limited to 550 volts if mounting is grounded. Special higher voltage mounting is available.
Terminals Standard terminals have 5/16 stainless hardware for ring lug connections.
Brass tags can be placed at connection points for identification.
Mounting Resistors can be mounted in grid arrays of 1x2 to 4x4. All resistors in one grid must be the same length.
Frames construction is heavy gauge zinc plated steel.
Oval Edge-Wound Derating Curve (DOE)
High Current Oval Edge-Wound (DOE) Derating Curve
High Current Oval Edge-Wound (DOE) Derating Curve
Nominal Current & Resistance Oval Edgewound Resistor (DOE)
525W 850W 1200W 1450W 1750W
Amps Ohms Amps Ohms Amps Ohms Amps Ohms Amps Ohms
- - - - 146 0.055 - - 146 0.082
- - - - 135 0.0677 - - - -
- - - - 124 0.080 - - - -
- - - - 116 0.0915 - - 116 0.142
113 0.0426 113 0.071 113 0.092 113 0.121 113 0.142
103 0.0497 103 0.0781 103 0.107 103 0.140 103 0.163
- - 100 0.080 100 0.122 - - 100 0.185
94 0.0581 94 0.0913 94 0.125 94 0.158 94 0.191
86 0.0747 86 0.116 86 0.158 86 0.199 86 0.241
85 0.0671 85 0.116 85 0.159 85 0.201 85 0.244
80 0.0864 80 0.134 80 0.182 80 0.230 80 0.278
79 0.0781 79 0.135 79 0.185 79 0.234 79 0.284
74 0.0984 74 0.156 74 0.213 74 0.279 74 0.336
70 0.110 70 0.171 70 0.232 70 0.293 70 0.354
69 0.115 69 0.182 69 0.249 69 0.326 69 0.394
65 0.128 65 0.199 65 0.270 65 0.341 65 0.412
62 0.146 62 0.220 62 0.305 62 0.390 62 0.463
61 0.148 61 0.230 61 0.312 61 0.394 61 0.476
56 0.170 56 0.270 56 0.369 56 0.483 56 0.568
- - 54 0.269 54 0.378 - - 54 0.573
51 0.213 51 0.327 51 0.440 51 0.554 51 0.667
47 0.249 47 0.382 47 0.514 47 0.647 47 0.780
43 0.299 43 0.465 43 0.631 43 0.796 43 0.963
39 0.364 39 0.566 39 0.768 39 0.970 39 1.170
35 0.465 35 0.707 35 0.909 35 1.190 35 1.390
32 0.544 32 0.846 32 1.148 32 1.450 32 1.750
30 0.695 30 1.057 30 1.360 30 1.780 30 2.080
26 0.860 26 1.310 26 1.680 26 2.210 26 2.580
25 1.060 25 1.620 25 2.080 25 2.730 25 3.190
22 1.200 22 1.830 22 2.450 22 3.070 22 3.700
18 2.040 18 3.110 18 3.990 18 5.240 18 6.130
  • Call or e-mail for information on mounting, grid configurations, unusual service conditions, or special requests.
  • The rating of continuous current (Amps) is based on a 375°C temperature rise.
  • Power: varies. •Tolerance: ± 10 %.
Order Codes (DOE)
DOE 1500W 1R3 K F
Part Number
DOE
Rated Power (W)
550W~3250W
Resistance Value
1R3 1.3Ω
13R 13Ω
Resistance Tolerance (%)
K ±10%
Lead Free