▎ 摘　　要

NOVELTY - The device has an epoxy resin locating plate (10) that is installed between a first solid-state relay (1) and a second solid-state relay (2). An upper end of the first solid-state relay is provided with a first contact connecting seat (3), a second contact connecting seat (4) and a third contact connecting seat (5). An upper end of the second solid-state relay is provided with a fourth contact connecting seat (6), a fifth contact connecting seat (7) and a sixth contact connecting seat (8). An outer side of the first and the second solid-state relays is provided with a multifunctional state monitoring module (9). USE - Three-phase unbalanced phase change device of solid-state relay for controlling phase-changing switch. ADVANTAGE - The solid-state relay three-phase unbalanced phase change device is connected in series through two relay part contacts, realizing the phase change function of the output current, and there is no short circuit fault problem at the same time, the installation is more convenient, the locating effect is excellent, not easy to fall off, convenient for detecting the device, when there is a problem, it can discover the first time and automatically control the closing, it is safer, and it brings better use prospect. The epoxy resin locating plate has good insulating sealing effect, the radiating pads have good radiating effect, using the graphene material, excellent heat conducting performance, simple and practical. DESCRIPTION OF DRAWING(S) - The drawing shows a perspective view of the three-phase unbalanced phase change device of solid relay. 1First solid-state relay 2Second solid-state relay 3First contact connecting seat 4Second contact connecting seat 5Third contact connecting seat 6Fourth contact connecting seat 7Fifth contact connecting seat 8Sixth contact connecting seat 9Multifunctional state monitoring module 10Epoxy resin locating plate