Wire wound power resistors, designed to your spec
We have provided and developed a wide range of wire wound resistors for 25 years: fixed resistors, adjustable resistors, and variable resistors including rheostats. From lift companies to rail authorities, we build to suit your need.
What is a wire wound resistor?
Wire wound resistors are precision resistors built by winding an alloy wire around a core to create a high-performance electrical component. They offer exceptional heat dissipation, high power handling, and superior stability and reliability.
They are ideal for applications requiring accuracy and durability, especially in high-stress environments. We offer them in a range of configurations to suit your exact need.
Coatings and configurations
D-type coating
A non-brittle, impervious encapsulation based on advanced silicone resins with high-density ceramic filler, for maximum insulation and heat transfer.
V-type coating
Vitreous enamel: high-density borosilicate glass fused at elevated temperature onto a special steatite former. Continuous operation at 350 degrees C is possible.
Adjustable resistors
Available from 20 watts upwards, with an exposed winding track contacted by a movable silver-contact clip.
Reliable termination
Resistance element silver-soldered to the terminal band at a point remote from the terminal projection to avoid bending strain.
Permanent markings
Printed with physical size, wattage at 250 degree C rating, terminal type, resistance value, and tolerance.
Where our resistors are used
Elevators and lifts
Supplied to major lift companies for seamless operation.
Rail transport
Cost-effective replacements for non-standard rail parts, designed for local rail authorities.
Scientific instruments
Precision resistors for high-sensitivity equipment.
Dynamic braking
Reliable solutions for high-load braking applications.
Over 25 years we have supplied and designed resistors for most of the major lift and elevator companies, and helped replace expensive non-standard spare parts for local rail authorities.
Wire Wound Resistors: common questions
Can you replace a discontinued or non-standard resistor?
What is the difference between D-type and V-type coatings?
What power ratings can you supply?
Related products
Ceramic Porcelain Insulators
Power parts, porcelain bodies, glazed high-voltage insulators, and ceramic heat sinks. Custom shapes a specialty.
Alumina Ceramics
92-99.8% pure alumina. Wear-resistant plates, tubes, and any formed shape, fired in our continuous tunnel kilns.
Technical Expertise
Replacing an underperforming part with a ceramic one? We engineer it from scratch, and guarantee the cheapest tooling.
Need wire wound resistors?
Send a drawing, a sample, or just a description of what is failing. We will reply within 2 business days with whether we can make it, how, and at what price.