Wiring column thread depth: In order to effectively avoid the phenomenon of slippery wire in the process of use, the thread depth to 17.3mm. let the connection voltage line more solid, not easy to loosen, to eliminate hidden problems. PA66 material: 1, has good insulation and dielectric properties, the use of safe and secure. 2, has good heat resistance aging, flame retardant. Sealing gasket: With screw tightening, it can make better sealing between the product and the plate. Card type shroud: easy to install, dustproof, safe and easy to plug and unplug.Widely used in energy storage, battery, high-current machine equipment and other scenarios.