Onboard three-phase surge protector

The utility model discloses an onboard three-phase surge protection device comprising a housing, a pedestal and a surge protection device module arranged in the housing, and the surge protection device module comprises three LN surge protection device sub-modules and an NPE surge protection device sub-module; the LN surge protection device sub-module comprises a multi-layer gap assembly module, anL pole pin and an N pole terminal. The NPE surge protection device sub-module comprises a single gap module, an N pole pin and at least one PE pole pin. An N-pole terminal of each LN surge protectiondevice sub-module is electrically connected with an N-pole pin of the NPE surge protection device sub-module in the shell; wherein the LN surge protector sub-module and the NPE surge protector sub-module are arranged in the shell, and the L-pole pin, the N-pole pin and the PE-pole pin are led out from the base. The surge protection device has the characteristics of compact structure, large through-flow rate, safety in use