Low load switch, also known as switch fuse suitable for AC power frequency circuits manually infrequently off-load circuit can also be used to line overload and short circuit protection through load switch power off Route touch knife complete schematic overload and short circuit protection by Fuse completed before the 1970s used the plastic cover and steel knife switch low voltage load switch switch belong to the small capacity of the low pressure switch contact load switching speed and handle operation speed of the larger capacity of low-voltage load switch operating mechanism with spring Principle of operation of the switching speed and handle the speed of the storage structure is relatively simple movement speed has nothing to do along with reliable mechanical interlock switch is not closing the lid open and closing the lid can not be opened after the switch ensures safety by load switching fuse and isolating switch (or contacts) in series of good quality load switch Which Xianyang? Which isolating switch (contactor) is responsible for opening and closing the loop current is normal, disconnect the fuse is responsible for all non-normal current loop, including overcurrent. Fuse Current - Operating time curve ensures overload current operating time. Ankang load switch Which is better? Huayi Electric Power (certified), load switch provided by Xian Huayi power plant. Xian Huayi power plant (www.xahy.com) is a leader in Xi'an, high voltage circuit breakers, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Huayi power in leadership with the staff warmly welcome all inquiries negotiations to create electricity Huayi a better future.