1.High quality: the protective base is of the type guide rail with two M4 screw hole structures, which can be installed directly separately or HT35 guide rail (if direct installation is required, the accessories should be on both sides of the bottom of the product). ejected). 2.Excellent performance: mainly used for error detection of AC 50/60 Hz, rated voltage ≤ 460 V, industrial threephase 220 V, 380 V, 440 V, 460 V and other voltage levels and providing relay protection for threephase input power supply in the case of overvoltage, undervoltage, phase failure, phase change. phasefolfol) and unbalanced threephase voltage. 3.Practical Size: 79 x 23 x 79 mm / 3.11 x 0.91 x 3.11 inches, the current carrying capacity of insulated copper wire is 1.0 2.5 mm, and a single copper wire can be inserted directly into the terminal; pin connectors must be added to the wires to ensure a reliable connection. 4.Widely used: voltage protection devices are often used in air compressors, motors, distribution boxes, pumps, oil pumps, central air conditioners, electrical control boxes, distribution cabinets, cranes, etc. It is an indispensable protection product for maintaining the normal working voltage of industrial systems in operation.