High-Power adjustable Resistor
Factory Direct · High-Power adjustable Resistor
Resistanceadjustable left/right · High-Powerwirewound · 25W ~ 10kW · long-lasting
Resistanceadjustable left/right, flexible adjustment
The conductive adjustment ring slides left/right along the wirewound surface for continuous resistance adjustment: sliding left decreases resistance and power; sliding right increases / power increases. Note: Disconnect power before adjusting manually, EnsuresOperateOperationsafe; after adjustingUsescrewLocktightFixedcan beThrowEnteruse.
QualityWirewounduniformly wound, stable performance
Carefully selected high-quality wirewound with tight tolerance; uniformly wound on the ceramic core with consistent process; low operating noise, stable and reliable, low TCR / thermally stable, long-term useminimal resistance drift.
Dimensions
| Power (W) | Diameter (mm) | Length (mm) | Height (mm) | Mounting Pitch (mm) |
|---|---|---|---|---|
| 25W | 20 | 52 | 52 | 78 |
| 30W | 20 | 70 | 52 | 88 |
| 40W | 20 | 90 | 52 | 100 |
| 50W | 28 | 90 | 52 | 100 |
| 75W | 28 | 140 | 65 | 166 |
| 100W | 28 | 170 | 65 | 200 |
| 150W | 28 | 215 | 65 | 241 |
| 200W | 28 | 267 | 65 | 290 |
| 250W (1) | 28 | 267 | 65 | 290 |
| 250W (2) | 40 | 200 | 90 | 235 |
| 300W | 40 | 267 | 90 | 300 |
| 400W | 40 | 330 | 90 | 360 |
| 500W | 50 | 300 | 90 | 338 |
| 600W | 50 | 330 | 90 | 368 |
| 800W | 60 | 300 | 90 | 338 |
| 1000W | 70 | 300 | 144 | 350 |
| 1200W | 70 | 360 | 144 | 390 |
| 1500W | 70 | 430 | 144 | 480 |
| 2000W | 70 | 510 | 144 | 560 |
| 2500W | 70 | 510 | 144 | 560 |
| 3000W | 80 | 430 | 195 | 480 |
| 4000W | 100 | 400 | 215 | 450 |
| 5000W | 100 | 500 | 215 | 550 |
| 6000W | 100 | 600 | 215 | 650 |
| 8000W | 100 | 600 | 215 | 650 |
| 10KW | 150 | 600 | 240 | 660 |
Electrical Characteristics
| Test Item | Test Condition | Performance |
|---|---|---|
| TCR Temperature Coefficient | Measure resistance at room temperature and at room temperature +100°C, then calculate resistance change per °C | ±300 ppm/℃ |
| Short Time Overload | Apply voltage corresponding to 10× rated power (√10PR) or maximum operating voltage (whichever is lower) for 5 seconds | ΔR ≤ ±(2%R0+0.05Ω) |
| Resistance to Soldering Heat | Dip in solder bath at 350±10°C for 2~3 seconds | ΔR ≤ ±(1%R0+0.05Ω) |
| Solderability | Dip in solder bath at 260±5°C for 2~3 seconds | Solder coverage ≥95% |
| Temperature Cycling | 30 min at -55°C → 10~15 min at +25°C → 30 min at +275°C, 5 cycles | ΔR ≤ ±(1%R0+0.05Ω) |
| Load Life in Humidity | 40±2°C and 90~95% RH chamber; apply rated or maximum operating voltage for 1000h (1.5h ON / 0.5h OFF) | ΔR ≤ ±(5%R0+0.05Ω) |
| Load Life in Heat | 70±2°C chamber; apply rated or maximum operating voltage for 1000h (1.5h ON / 0.5h OFF) | ΔR ≤ ±(5%R0+0.05Ω) |
| terminal Strength | Pull: 10N | ΔR ≤ ±(2%R0+0.1Ω) |
| Vibration | Frequency 10~55Hz, amplitude 0.75mm, 6 hours | ΔR ≤ ±(2%R0+0.1Ω) |
| Nonflammability | Apply 5×, 10×, 16× rated power AC load for 5 minutes | No visible flame |
48-Hour Free Samples
Free samples for standard parts — shipped within 2 business days.
Custom to Drawing
Drawing- and spec-based customization. Engineer responds within 24 hours.
Volume Discounts
Factory-direct supply at scale — direct manufacturer pricing.
Worry-Free After-Sales
12-month warranty with a dedicated team for technical issues.
Customization Process
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Specify Requirements
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We send pricing and proposal
Place Order
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Production
Manufacturing and quality inspection
Ship
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Delivery
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Frequently asked questions
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Sample Request
Standard samples are provided free of charge in reasonable quantities (shipped within 2–3 business days). Custom samples are delivered within 2–4 weeks. Please use the form on the right to tell us:
- Company and contact details
- Target part number or key specs (power / resistance / package)
- Application scenario and estimated annual volume
- Shipping address and expected delivery date