Wire Wound Resistors

Start with the function the resistor performs in your equipment. Industrial wirewound resistors are used in motor control, test equipment, industrial automation and OEM assemblies. Replacement selection needs to consider the original resistance, electrical loading, physical dimensions and connections together.

A wirewound component is not the same as a complete neutral earthing resistor, braking resistor or load bank system. If you need a complete assembly rather than a component, tell our team about the equipment and application so they can direct you to the relevant product range.

Resistance and tolerance

Specify the required resistance in ohms and the acceptable tolerance. For matched sets, resistor chains or a replacement part, include the matching requirement or original product reference. The standard range and tolerance tables below describe the listed options; ask our team to confirm the selection for your application.

Provide the required power dissipation and whether loading is continuous, intermittent or pulsed. Include operating voltage or current, pulse duration and repetition where known. Do not select a resistor by wattage alone: the load profile, mounting and installation conditions also need review.

Compare round and oval former options with the available space and mounting arrangement. Specify fixed or adjustable tapping requirements and the connection type, such as axial leads, solder lugs or tapping bands. For a replacement, supply dimensions and a photograph or drawing of the existing installation.

Describe the ambient conditions, enclosure, ventilation and nearby heat sources. If chassis or heat-sink mounting is proposed, provide the arrangement for review rather than assuming an increased power rating applies to every resistor.

Send the following details through our contact page. If a value is unknown, identify it as unknown and ask our team for selection help rather than guessing.

Backer Cynebar Ohmic continues the trusted Hurtle Webster brand of wirewound resistors, supplying high-quality Ohmic Resistors, Wirewound Resistors and a comprehensive Standard Resistor Range for industrial, OEM, mining, rail, defence, power generation and appliance applications.

Our resistors are engineered for long-term reliability, excellent thermal stability, accurate resistance values and outstanding overload performance. Available on both round and oval ceramic formers, the Cynebar range offers one of Australia's broadest selections of industrial wirewound resistors.

Backer Cynebar Ohmic manufactures resistor assemblies designed to perform reliably in demanding industrial environments.

Our standard resistor range is wound on high-grade ceramic insulating formers, available in both:

Custom former shapes, lengths and materials can also be manufactured to customer specification. We regularly produce specialist resistor windings on fibreglass cores and other engineered insulating materials for OEM applications.

Our wirewound resistors use premium resistance alloys with a temperature coefficient as low as 20 ppm/°C, ensuring excellent resistance stability throughout the operating temperature range.

Features include:

Special resistance alloys and custom temperature coefficients are available for engineered applications.

Our specially developed silicone resin coating provides protection against:

This coating system enables reliable performance in harsh Australian industrial environments.

Every Backer Cynebar Ohmic resistor undergoes rigorous manufacturing controls, including:

This ensures repeatability, reliability and long service life across the complete resistor range.

Our standard range covers round former (HTR) and oval former (HTF) wirewound resistors from 3W to 1000W.

Backer Cynebar Ohmic offers industry-leading resistor tolerances. For specialist applications, matched resistor assemblies and precision resistor networks can be supplied to customer requirements.

Long-term stability is critical for industrial resistor applications.

Better than 0.02% per 1,000 operating hours at maximum load and 70°C.

This exceptional stability makes Cynebar wirewound resistors suitable for:

Small Wattage Types

Backer Cynebar Ohmic provides multiple mounting arrangements to simplify installation.

Available for:

Heat sink mounting systems are available for selected resistor sizes and can increase power dissipation capacity by up to 50% when mounted to suitable metal chassis surfaces.

Backer Cynebar Ohmic wirewound resistors are used throughout Australia in:

Backer Cynebar Ohmic is an Australian manufacturer based in Brisbane, supplying high-performance resistor products throughout Australia and international markets.

With local engineering support, custom manufacturing capability and ISO 9001:2015 certified quality systems, Backer Cynebar Ohmic delivers resistor solutions built for demanding industrial environments.