Suitable for switch control of electrical control circuits in new energy mining vehicles, rail car supporting equipment, photovoltaic and wind power generation systems, automotive air conditioning, communication power supplies, uninterruptible power supplies, electroplating power supplies and other systems. It has the characteristics of small size, large load capacity, no sparks, long service life, and simple maintenance, and is highly welcomed by users. 1. DC high voltage cutting ability: The product adopts a magnetic blowing grid arc extinguishing device internally, which has high arc extinguishing ability in air; 2. Strong load control capability; 3. Safety: The insulation shell isolation structure can work in flammable or hazardous environments, and the coils and contacts will not oxidize or contaminate; 4. Compared to similar products, it has a smaller volume, lighter weight, and lower power consumption. This product complies with the requirements of JB2286-78, JB3974-85, YD/585-92, and YD/T512-92 departmental standards; Tested by the factory and relevant testing units, it meets the requirements of departmental standards and specifications, has been used by users for many years, maximizes the satisfaction of user needs, and has reliable quality.