Dugdale’s NTC negative temperature coefficient compounds can not only produce thinner and lower cost electric cables but critically sense 'hot spots' and shut down electrical systems providing essential protection to people and equipment.

How does it work? NTC negative temperature coefficient materials experience a rapid decrease in electrical resistance at temperatures of between 80 -100°C and this characteristic can be used to detect localised overheating in cable networks.

This detection is typically achieved through connection to an electronic measuring device that monitors the electrical resistance between two concentric wires in a co-axial cable insulated by the NTC Negative Coefficient Compound. When the resistance drops to a predetermined level, the device either switches the equipment off, or triggers an alarm in the cable network.

In a traditional cable, a substantial PE insulating layer keeps the wires apart and if serious overheating occurs the PE melts, the wires touch and trip the circuit breaker or fuse. The low melt NTC negative coefficient PVC compound can be monitored electronically, offers superior physical and insulation properties plus it melts around the same temperature as PE offering the potential to eliminate the PE layer resulting in a thinner and more flexible cable which can help significantly with manufacturing and installations costs.

NTC Negative Coefficient compounds are used in a huge range of applications across a variety of industries such as electrical and electronic consumer goods, aircraft, automobile and power supply industries, and any situation where monitoring the heat in cables can contribute to performance and safety.

We can provide our NTC negative coefficient compounds in a wide range of colours to meet each customers' requirements.

Speak to our team with any questions you may have about our PVC NTC Negative Coefficient compounds, we would be happy to help.