Introduction To Low Voltage Load Switches

Low voltage load switch, also known as switch fuse group. Suitable for manually and infrequently switching on and off loaded circuits in AC power frequency circuits; It can also be used for overload and short circuit protection of power lines. The on-off circuit is completed by a contact knife, and overload and short circuit protection is completed by a fuse. The rubber cover knife switch and iron shell switch used before the 1970s belong to low-voltage load switches. The opening and closing speed of low voltage load switch contacts with small capacity is related to the operating speed of the handle. The operating mechanism of low-voltage load switches with large capacity adopts the principle of spring energy storage action, and the opening and closing speed is independent of the speed of the handle operation. The structure is relatively simple and equipped with reliable mechanical interlocking devices. The switch cannot be closed after the cover is opened, and the cover cannot be opened after the switch is closed, ensuring work safety.