Surge protector, and release mechanism and base thereof

A surge protector, comprising:

• at least one varistor (5);
• a base;
• and at least one release mechanism, including an internal box body (2), a function rotating member (3), an elastic driving device (4), a first electrical connection pin (6), a second electrical connection pin (7) and a bridge bracket (8), accommodated in the varistor (5), and the first electrical connection pin (6) and the second electrical connection pin (7) being plugged in the internal box body (2), and a varistor's second electrode (5B) and the first electrical connection pin (6) being soldered, and the internal box body (2) having a fixed column (2B), and the function rotating member (3) having an arc shield plate (3F) and a soldering window (3C), and the function rotating member (3) being sheathed on the fixed column (2B) and disposed between the varistor (5) and the bridge bracket (8), and the elastic driving device (4) having an end coupled to the function rotating member (3) and another end fixed to the internal box body (2), wherein an end of the bridge bracket (8) is directly fixed and coupled to the second electrical connection pin (7), and when the varistor (5) is situated at a normal status, the function rotating member (3) is situated at a first position, and another end of the bridge bracket (8) is passed through the soldering window (3C) and soldered with a varistor's first electrode (5A) at low temperature, and when the varistor (5) is situated at a release status, the elastic driving device (4) drives the function rotating member (3) to rotate around the fixed column (2B), such that when the function rotating member (3) is rotated to a second position, the arc shield plate (3F) provides a shielding effect between the bridge bracket (8) and the varistor's first electrode (5A).