The invention relates to a combined electromagnetic tripping device for a universal circuit breaker. The combined electromagnetic tripping device is formed by splicing an upper part and a lower part, wherein the upper part and the lower part can be arranged in a splicing way by correspondingly inserting three convex columns on the upper part into three counter bores in the lower part and fastening through screws. After the upper part and the lower part are combined, the upper end of a tripping rod on the upper part is combined with the locking position on a reset key on the lower part, namely, the tripping rod is locked by the locking position on the reset key once the tripping rod performs a downward tripping action under the action of a reset spring, so that the tripping rod is prevented from resetting; at the moment, the reset key is pressed down, the tripping rod is unlocked, and the tripping rod is reset by moving upwards under the action of a reset pull spring of the tripping rod; after the upper part and the lower part are combined, the lower end of the tripping rod on the upper part is combined with a switch-off revolving member on the lower part, namely, each tripping action of the tripping rod is realized by driving the switch-off revolving member to rotate. The combined electromagnetic tripping device has the advantages of compact overall structure, high integrity, saving of size and convenience in mounting and maintenance.