The invention discloses a low-
voltage intelligent reactive compensation 
system device. The low-
voltage intelligent reactive compensation 
system device comprises a 
capacitor control terminal, wherein an input end of the 
capacitor control terminal is electrically connected with an execution module, an input end of the execution module is electrically connected with a command acceptance module, an input end of the command acceptance module is electrically connected with a touch screen, an output end of the 
capacitor control terminal is electrically connected with a feedback module, and an output end of the capacitor control terminal is electrically connected with a temperature sensor. By arranging the capacitor control terminal, the temperature sensor, a hurl-slices switch module, a 
thyristor, a magnetic latching 
relay, a zero-cross trigger conduction circuit, a 
thyristor protection circuit, an alarm grade judgment module, a microprocessing module and a monitoring unit, the problem that a power capacitor in the market is damaged due to over-temperature of a part is solved, the low-
voltage intelligent reactive compensation 
system device is small in size and simple in wiring in site, is convenient to maintain and is worth promotion, a user is convenient to use, and the service lifetime of the capacitor is prolonged.