The Thermarestor® system has been specifically designed and developed to act as a pre- ignition solution to the problem of electrical fires resulting from resistive heating due to high resistance connections (HRC) and abnormal heat resulting from prolonged electrical overload.
The TSW thermal switch, the component common to the Thermarestor product range, is manufactured by Vishay Intertechnology Inc. and has already been subject to rigorous testing, as would be expected from one of the world’s leading manufacturers of passive components. The procedures and results contained within this report relate to the independent testing of the engineered applications incorporating the TSW thermal switches and which constitute the Thermarestor system. This testing was carried out by Schneider Electric UK Ltd. at their engineering laboratory in Swindon, being completed in June 2014
The aim of this testing was to establish that the Thermarestor product range functions as intended, namely by sensing abnormal or unexpected heat associated with both HRC and prolonged overload conditions and activating within its set design parameters.
Having concluded the testing phase, the headline results may be summarised as follows:
The purpose of the test was to determine temperature rise characteristics of single phase household cut-out and domestic consumer unit at different overload currents and to investigate the operational performance of the device fitted with Thermarestor inside a consumer unit subject to the overload.
To simulate conditions that might lead to unwanted thermal affects inside consumer unit and prove initiation of the Thermarestor.