Thermal Links

Thermal Links – Chatham Components Inc. is an authorized distributor for two of the highest quality thermal link brands available – the Elcut brand and the SEFUSE® brand.

The Elcut brand of thermal links is manufactured by Uchihashi Estec Co., Ltd of Osaka, Japan. The high current SEFUSE SF-R series of thermal links are manufactured by SCHOTT Japan Corporation, Shiga, Japan. Both the Elcut and SEFUSE thermal links are internationally recognized for their high quality and leading edge design technologies. They are manufactured according to ISO9001 standards, the international standard for quality assurance.

The Elcut brand of thermal links, ares based upon a fusible alloy. The high current SEFUSE brand of thermal links are based upon a thermal sensitive pellet and mechanical spring actuated contacts. Elcut and SEFUSE thermal links have most agency approvals, including UL/cUL, CSA, CCC, VDE and PSE.

The ELCUT and SEFUSE brand of thermal links are of the non-resettable type thermal protectors attached to the heat generating section of electronic parts including motors, transformers, power supplies battery packs etc. If the device heats to the cutoff temperature (fusing off) of the thermal link, the thermal element within the fuse melts and breaks (cuts-off) the electrical circuit. However, the time required for heat transfer from the heat source to the thermal element of the thermal link varies with the mounting conditions. Therefore, compliance with the manufacturers installation instructions must be followed. In addition, sufficient testing must be performed with review of all testing data to determine the optimal thermal link design for a particular application. It is very important to not use ELCUT and SEFUSE thermal fuses in applications that exceed the electrical rating and temperature specifications, such as the holding temperature, normal/maximum use temperature and maximum temperature limit ranges. Uchihashhi Estec Co, Ltd. or SCHOTT Japan Corporation shall not be liable for accidents or damage caused by misuse or misapplication of thermal cutoffs whose specifications have been exceeded.