Adjustable electromagnetic power supply switch

The invention relates to the technical field of automobile power supply switches, disclosing an adjustable electromagnetic power supply switch. The adjustable electromagnetic power supply switch comprises an upper casing (1), a lower casing (18), an iron core (13), a movable contact spring assembly (12), a static contact spring assembly (22), a coil rack assembly (14), an enamelled wire (15) and the like, wherein magnetic conduction inner casings (17) are additionally arranged on the outer sides of the iron core (13), the coil rack assembly (14) and the enamelled wire (15); the inside diameters of the magnetic conduction inner casings (17) are the same as the excircle diameter of the coil rack assembly (14); the upper casing (1) and the lower casing (18) are made of plastic; main contacts are respectively made of composite silver material; and adjusting screws (6) are additionally arranged at the top of the iron core. According to the adjustable electromagnetic power supply switch disclosed by the invention,