To solve the following problem: a unit for indicating blowout is complicated in a high voltage vacuum electromagnetic contactor carrying a power fuse having a blowout indication bar.

The front of the high voltage vacuum electromagnetic contactor is used as an earth metal plate and an indication window is provided in a part of it, and a blowout indication part made of an insulator is disposed between the earth metal plate and the power fuse. The blowout indication part is composed of a rotatably disposed rotation shaft, a flapper part pushed by getting engaged with the blowout indication bar when the blowout indication bar is operated, and an operation indicator fixed to the rotation shaft and turned to the position of the indication window when operating the blowout indication bar.