Overview
Overview
Aluminum-housed resistors use an extruded aluminum-alloy enclosure with non-inductive wirewound resistance wire potted in inorganic silicone gel — delivering excellent heat dissipation, mechanical strength and vibration resistance for high-power, high-heat applications. Used wherever energy dissipation (heat) plus high power and high stability are required: industrial equipment / power systems, new-energy / energy-storage systems, automotive electronics / EVs, test & lab equipment and more.
Key Features
Efficient Thermal Design, Stable Output
- Extruded aluminum-alloy housing with high thermal conductivity
- Stable temperature rise under continuous full-load operation
High Power Handling for Demanding Conditions
- Single units cover the full 5W ~ 1500W power range
- High-temperature, vibration- and transient-overload resistant
Reliable Wirewound Construction
- Internal non-inductive winding for stable performance
- Inorganic silicone potting for high mechanical strength
Excellent Overload & Pulse Capability
- Withstands short-duration 10× rated power surges
- Suited to braking / discharge and other high-energy applications
Wide Spec Variety, Flexible Selection
- Multiple power, resistance and form-factor options
- Custom non-standard parts and tooling supported
Easy Installation, Strong Compatibility
- Standard M4 / M5 mounting holes
- Can be integrated with heatsinks
Excellent Insulation & Safety
- Internal silica filling, insulation strength ≥ 2500VAC
- Compliant with RoHS / REACH
Models
Models
50-1500W · Custom Resistance
Trapezoidal Aluminum Housed Resistor
5-1000W · Custom Resistance
Gold Aluminum Housed Resistor
Custom Resistance
Slim Aluminum Housed Resistor
Custom Resistance
Vertical Aluminum Housed Resistor
Custom Resistance
Boat-Type Aluminum Housed Resistor
Custom Resistance
Aluminum Housed Resistor with High-Temp Wire
Custom Resistance
Heatsink Metal Resistor
Custom Resistance
Aluminum Housed Braking Resistor
Applications
Typical Applications
Inverter Braking
Servo Drives
Elevator Regenerative Loops
Wind Power Converters
Solar Inverters
EV Charging
Compare Aluminum Housed Resistor Models
Side-by-side specs for every model in this family — power range, resistance range, tolerance, operating temperature and key applications.
| Specification | 50-1500W · Custom ResistanceRXLG Trapezoidal Aluminum Housed Resistor | 5-1000W · Custom ResistanceRX24 Gold Aluminum Housed Resistor | Custom ResistanceRXLB Slim Aluminum Housed Resistor | Custom ResistanceVertical Aluminum Housed Resistor (Aluminum Housed Braking Resistor) | Custom ResistanceRXPC Boat-Type Aluminum Housed Resistor | Custom ResistanceRX24 Aluminum Housed Resistor with High-Temp Wire | Custom ResistanceHeatsink Metal Resistor | Custom ResistanceAluminum Housed Braking Resistor |
|---|---|---|---|---|---|---|---|---|
| Power Range | 40W ~ 500W | 5W ~ 1000W (RX24 Series — 19 models) | 50W ~ 10000W (covers the 50–1500W standard range) | 50W ~ 10000W (covers the 50–1500W standard range) | 50W ~ 10000W (covers the 50–1500W standard range) | 50W ~ 10000W (covers the 50–1500W standard range) | 50W ~ 10000W (covers the 50–1500W standard range) | 50W ~ 10000W (covers the 50–1500W standard range) |
| Resistance Range | 0.1Ω ~ 100KΩ | 0.1Ω ~ 100KΩ | — | — | — | — | — | — |
| Tolerance | ±1% / ±2% / ±5% | ±1% / ±2% / ±5% | — | — | — | — | — | — |
| EnclosureProcess | Trapezoidal extruded aluminum enclosure | — | — | — | — | — | — | — |
| Operating Temperature | -55℃ ~ +275℃ | — | -55°C ~ +375°C (rated-power temperature ≤ +70°C) | -55°C ~ +375°C (rated-power temperature ≤ +70°C) | -55°C ~ +375°C (rated-power temperature ≤ +70°C) | -55°C ~ +375°C (rated-power temperature ≤ +70°C) | -55°C ~ +375°C (rated-power temperature ≤ +70°C) | -55°C ~ +375°C (rated-power temperature ≤ +70°C) |
| Applications | VFD braking · Servo drives · Industrial energy dissipation | — | — | — | — | — | — | — |
| EnclosureStructure | — | Eco-friendly molded · Fully welded | — | — | — | — | — | — |
| Winding Process | — | Non-inductive (Ayrton-Perry winding) | — | — | — | — | — | — |
| terminal Form | — | 0.6 Straight Lead / 1.6-2.0 hole-lead / M4 / M8 | — | — | — | — | — | — |
| Resistance Tolerance | — | — | MAX ±5% | MAX ±5% | MAX ±5% | MAX ±5% | MAX ±5% | MAX ±5% |
| Enclosure Features | — | — | — | — | — | — | — | — |
| terminal Finish | — | — | — | — | — | — | — | — |
| Voltage Range | — | — | 0.5KV ~ 2.0KV | 0.5KV ~ 2.0KV | 0.5KV ~ 2.0KV | 0.5KV ~ 2.0KV | 0.5KV ~ 2.0KV | 0.5KV ~ 2.0KV |
| Withstand Voltage | — | — | < 2000V | < 2000V | < 2000V | < 2000V | < 2000V | < 2000V |
| IP IP Rating | — | — | — | — | — | — | — | — |
| Operating Environment | — | — | — | — | — | — | — | — |
| Form Factor | — | — | — | — | — | — | — | — |
| Application Areas | — | — | — | — | — | — | — | — |
| Model | — | — | — | — | — | — | — | — |
| N Series | — | — | — | — | — | — | — | — |
| Series Model | — | — | — | — | — | — | — | — |
| lead process | — | — | High-temperature braided lead (enclosure-fixed, high-temp lead-out) | High-temperature braided lead (enclosure-fixed, high-temp lead-out) | High-temperature braided lead (enclosure-fixed, high-temp lead-out) | High-temperature braided lead (enclosure-fixed, high-temp lead-out) | High-temperature braided lead (enclosure-fixed, high-temp lead-out) | High-temperature braided lead (enclosure-fixed, high-temp lead-out) |
| Enclosure | — | — | 95% aluminum-alloy enclosure | 95% aluminum-alloy enclosure | 95% aluminum-alloy enclosure | 95% aluminum-alloy enclosure | 95% aluminum-alloy enclosure | 95% aluminum-alloy enclosure |
| Typical Applications | — | — | Power testing / Circuit loads / Elevators / VFDs / Crane braking / Power / Marine / Industrial automation | Power testing / Circuit loads / Elevators / VFDs / Crane braking / Power / Marine / Industrial automation | Power testing / Circuit loads / Elevators / VFDs / Crane braking / Power / Marine / Industrial automation | Power testing / Circuit loads / Elevators / VFDs / Crane braking / Power / Marine / Industrial automation | Power testing / Circuit loads / Elevators / VFDs / Crane braking / Power / Marine / Industrial automation | Power testing / Circuit loads / Elevators / VFDs / Crane braking / Power / Marine / Industrial automation |
| Product Name | — | — | Aluminum Housed Braking Resistor | Aluminum Housed Braking Resistor | Aluminum Housed Braking Resistor | Aluminum Housed Braking Resistor | Aluminum Housed Braking Resistor | Aluminum Housed Braking Resistor |
| Voltage Rating | — | — | AC 2.5KV ~ 4KV / 1min / 50Hz | AC 2.5KV ~ 4KV / 1min / 50Hz | AC 2.5KV ~ 4KV / 1min / 50Hz | AC 2.5KV ~ 4KV / 1min / 50Hz | AC 2.5KV ~ 4KV / 1min / 50Hz | AC 2.5KV ~ 4KV / 1min / 50Hz |
| IP Rating | — | — | IP33 ~ IP54 | IP33 ~ IP54 | IP33 ~ IP54 | IP33 ~ IP54 | IP33 ~ IP54 | IP33 ~ IP54 |
| terminal Specs | — | — | M4 mounting hole | M4 mounting hole | M4 mounting hole | M4 mounting hole | M4 mounting hole | M4 mounting hole |
| View details | View details | View details | View details | View details | View details | View details | View details | View details |
Frequently asked questions
What power range do your aluminum housed resistors cover?
Our aluminum housed series (RX24, RXG24, RXLG) covers 5 W to 1000 W when properly heatsinked. Standard rack-mount values include 25 W, 50 W, 100 W, 200 W, 300 W, 500 W and 1000 W, with resistance from 0.1 Ω to 100 kΩ and ±5% tolerance standard (±1% optional).
How important is heatsink mounting for aluminum housed resistors?
Critical — without a heatsink, derate to roughly 25–30% of the rated power. The aluminum housing transfers heat to the mounting surface; we recommend a flat aluminum plate with thermal paste, with surface area 200–500 cm² per 100 W. Bolt with M4–M6 screws to 1.5–3 N·m torque per the datasheet.
What is the typical IP rating and are these suitable for outdoor use?
Standard aluminum housed resistors are IP00 (open terminals) since they are designed for installation inside an enclosure. For outdoor or harsh environments we offer IP54 silicone-potted or IP65 fully-sealed variants with sealed cable glands. Operating temperature is −55°C to +200°C case temperature.
What's the difference between aluminum housed and chassis-mount wirewound resistors?
Both use wirewound elements, but the aluminum housing adds a fully enclosed extruded shell that protects against dust, vibration and accidental contact, with much better heat transfer to a heatsink. Chassis-mount (vitreous-enamel coated) units are cheaper and more compact but rely on convection cooling and have lower power density. Aluminum housed is preferred above 25 W where heatsinking is available.
Are aluminum housed resistors RoHS and lead-free compliant?
Yes — all standard aluminum housed product lines comply with RoHS 3 (EU 2015/863) and REACH. Soldered terminations use SAC305 lead-free solder. Material declarations and CoC are provided free with every shipment; full third-party SGS reports available on request via info@resistor-factory.cn.
Sample Request
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
📧 You can also email us directly at info@resistor-factory.cn / 13650089870
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