Three-phase alternating-current stabilized power supply

The utility model relates to a voltage-stabilized power supply, in particular to a three-phase alternating-current voltage-stabilized power supply. The junction box comprises a box body and a wiring terminal arranged on the box body, a safety cover body is arranged on the wiring end; the safety cover body comprises a base fixedly connected with the box body; wherein a cavity is formed between thebase and the box body, the wiring end is arranged in the cavity, an opening is formed in the base, a cover body for opening or closing the opening is arranged at the opening, one end of the cover bodyis hinged with the base, a lock cylinder assembly is arranged between the other end of the cover body and the base, and a sealing piece is arranged between the cover body and the base. The utility model aims to provide a three-phase AC stabilized power supply with higher safety performance. 本实用新型涉及一种稳压电源，特别涉及一种三相交流稳压电源。包括有箱体及设于箱体上的接线端，接线端上设有安全盖体，所述的安全盖体包括有与箱体固定连接的底座，底座与箱体之间形成腔体，接线端设于腔体内，底座上设有开口，开口处设有将开口打开或闭合的盖体，该盖体一端与底座铰接