摘要:
A thermal tripping mechanism of a surge protection device comprises an elastic mechanism. Two first protection components (103) and one second protection component (108) form a Y-shaped layout and the two first protection components (103) are directly or indirectly connected to the second protection component (108) by using a thermal fusing material. The elastic mechanism comprises an elastic part (105) and a slide part (106). The elastic part (105) drives the slide part (106) to move by an elastic force. When the two first protection components (103) are both in a normal working state, the thermal fusing material does not reach a fusing temperature, the two first protection components (103) and the second protection component (108) form a conductive path, and the elastic part (105) is in an energy storage state. When at least one of the first protection components (103) is in an abnormal working state, the thermal fusing material reaches the fusing temperature and is fused, the elastic part (105) releases energy for driving the slide part (106) to move, and the slide part (106) moves to cut off the conductive path.
摘要:
A surge protection device base (121) comprises: a first housing (101), a second housing (102) and a third housing (103). The first housing (101) is provided with at least one first structure. The second housing (102) is provided with at least one second structure. The third housing (103) is provided with at least one first structure and at least one second structure. The first structure is positioned at a second half side of the third housing (103) while the second structure is positioned at a first half side of the third housing (103). One first housing (101), one or more third housings (103) and one second housing (102) are spliced together to form a multipolar surge protection device base (121). The first housing (101) and a first half side of the third housing (103) adjacent thereto constitute a unipolar surge protection device base (121), a second half side and a first half side of the two adjacent third housings (103) constitute a unipolar surge protection device base (121), and the second housing (102) and a second half side of the third housing (103) adjacent thereto constitute a unipolar surge protection device base (121).
摘要:
A surge protection device (100) with short-circuit protection function. The surge protection device comprises a surge protection module (102) and a short-circuit current protection module (101). The surge protection module discharges and suppresses a surge current and voltage, and the surge protection module is a plug-in type module. The short-circuit current protection module is integrated in a pedestal, and the short-circuit current protection module provides short-circuit protection and plug-in mounting for the surge protection module. The surge protection device overcomes the problems such as impact current brought by using an external overcurrent protection device as backup protection, while the surge protection device has a strong current limiting capacity, a good short-circuit breaking capacity, and a small minimal instantaneous tripping current value. The surge protection device can withstand a failure mode occurring in a temporary overvoltage (TOV), and can also play the role of protection in the case of a low current.