Abstract: A preparation method and a product of thermoplastic carbon fiber fabric prepreg are provided. The preparation method includes: covering a thermoplastic polyimide non-woven fabric on a carbon fiber fabric to obtain a laminated structure, pressing the laminated structure, then spraying polyphenylene sulfide nanoparticles onto the thermoplastic polyimide non-woven fabric, and performing a two-stage hot melting preparation process which includes: in a first stage, heating up to make the polyphenylene sulfide nanoparticles be melted and infiltrate and keeping a hot melting time of 5-10 min; and in a second stage, heating up to make the thermoplastic polyimide non-woven fabric be melted and infiltrate into the carbon fiber fabric and cooling down after a duration of heat preservation to prepare the thermoplastic carbon fiber fabric prepreg. The thermoplastic carbon fiber fabric prepreg prepared by the two-stage hot melting has high strength and may be stored for a long period.

Abstract: A modular surge protector includes a shell, a discharge tube unit, a first varistor unit and a second varistor unit, where the discharge tube unit, the first varistor unit and the second varistor unit are arranged in the shell. The first varistor unit and the second varistor unit are stacked, the discharge tube unit is provided at a same side of each of the first varistor unit and the second varistor unit, a first electrode is led out from the first varistor unit, a second electrode is led out from the second varistor unit, and a third electrode is led out from the discharge tube unit. Three frames are provided for the discharge tubes and the varistors to form the modular design. With the vertical discharge tubes and the horizontal varistors, the modular surge protector has a compact structure and meets the requirements of miniaturization applications.

Abstract: A modular surge protection device (SPD) is provided. The modular SPD includes an overvoltage protection component, and a trip mechanism for disconnecting the SPD, where the overvoltage protection component is provided with a pin electrode; the overvoltage protection component includes a voltage switching element; and the trip mechanism is provided on the voltage switching element. The SPD can ensure no action of the trip mechanism in response to a surge in a high-temperature environment, and does not affect the action time of the trip mechanism in response to an abnormal overcurrent.

Abstract: A surge protector with an anti-off structure includes a pluggable module and a base. The base includes external terminal connection parts on both sides. The top of the external terminal connection part of the base is provided with a sliding limit device. Both sides of the pluggable module are provided with limit protruding blocks. The sliding limit device includes a hole cover, and the hole cover is slidably connected to the top of the external terminal connection part. When the pluggable module is completely inserted, a part of the hole cover protrudes into the pluggable module installation slot and is clamped with a fixing limit device of the pluggable module to limit the pluggable module from being detached from the base. When the pluggable module is removed, the hole cover is moved toward both sides, such that the hole cover is separated from the fixing limit device.