Model HD11F-200/38 open type knife switch has the following advantages: 1. High safety: the switch is designed with mechanical locking and electrical isolation, which can effectively prevent electric shock accidents. When the circuit is faulty or needs to be disconnected, the switch will close automatically to ensure the safety of personnel. 2. High reliability: HD11F-200/38 knife switch has been strictly tested and quality controlled to have high reliability and stability; it is not easy to fail under normal use and can continuously provide reliable current output. 3. Multi-functionality: HD11F-200/38 knife switch has a variety of different wiring options, suitable for circuits with different voltage levels and power requirements. At the same time, it can also be used as a power switching device for AC contactors, thermal relays and other equipment to realize the combined application of various functions. 4. Economical and practical: Compared with other types of switches, HD11F-200/38 knife switch is relatively low in price, compact in size and easy to install. For some small electrical equipment control needs, this switch can meet the user's economic requirements.