High Temperature Non Deformation And Low Temperature Non Cracking Terminal Blocks: Reliable Connection Guarantee For Extreme Environments
In extreme environmental scenarios such as industrial automation, new energy generation, and rail transit, the temperature adaptability of terminal blocks directly determines system stability. A terminal block that combines high-temperature non deformation and low-temperature non cracking characteristics, with material innovation and structural optimization, has become the core connection solution for harsh working conditions.
The terminal block adopts a double-layer material innovative design, and the insulation shell is selected from high rigidity PPA engineering plastic and PA66 composite material. After special modification treatment, the thermal deformation temperature is increased to above 260 ℃. It can continue to work in high-temperature environments such as metallurgical baking and chemical reaction vessels without softening or deformation, and also meets the EN45545 fire protection standard to ensure high temperature safety. The conductive core is made of low-temperature alloy with added nickel element and copper-clad steel composite material. After low-temperature toughness strengthening treatment, it maintains excellent toughness even in extremely cold environments of -40 ℃, eliminating the risk of brittle fracture in frozen soil areas and high latitude outdoor scenes.
In terms of structural design, the terminal adopts elastic connection buckles and segmented adaptive structure, which can alleviate the thermal expansion and contraction stress caused by temperature changes and avoid cracking and loosening of traditional terminals due to stress concentration. The dual protection of surface nano ceramic coating and nickel plating not only improves corrosion resistance, but also enhances performance stability under high and low temperature cycling. After thousands of thermal cycling tests from -55 ℃ to+125 ℃, the contact resistance remained stable below 10m Ω.
It is widely applicable to scenarios such as coastal wind power, high energy photovoltaics, and rail transit, and can achieve long-term stable operation for 20 years without frequent maintenance, significantly reducing equipment failure rates in extreme environments and building a solid connection defense line for the reliable operation of electrical systems.
