An electromagnetic operation device, comprising: a manual operation section with which to manually carry out opening operation for a plurality of switches all at one time, the device being characterized in that the manual operation section includes: a shaft which, being pivotably held on a frame of an electromagnetic operation device main body section which operates each of the switches, is disposed spanning a region in which are aligned a plurality of the electromagnetic operation device main body sections; a handle portion having a grip portion with which to pivotally operate the shaft; a plurality of cams which are mounted on the shaft so as to correspond to each of the plurality of electromagnetic operation device main body sections; and a link member which, being provided between the shaft and a movable shaft of each of the electromagnetic operation device main body sections, is pivotably supported on a rotation shaft supported on the frame, and one end portion and the other end portion of which are in contact respectively with the cam and with the movable shaft, wherein a configuration is such as to cause the shaft to pivot in accordance with opening operation of the handle portion, causing a plurality of the movable shafts to move at the same time via the cams and the link members, characterized in that the manual operation section includes a plunger which, having incorporated therein a compression spring, is fixed to the frame and a plunger cam which, interlocking with the plunger, is fixed to the shaft, wherein a configuration is such that in the intermediate position of a rotation range of the shaft when in opening operation, the apex portion of the plunger cam comes into contact with the plunger and compresses the compression spring. a manual operation section with which to manually carry out opening operation for a plurality of switches all at one time, the device being characterized in that the manual operation section includes: a shaft which, being pivotably held on a frame of an electromagnetic operation device main body section which operates each of the switches, is disposed spanning a region in which are aligned a plurality of the electromagnetic operation device main body sections; a handle portion having a grip portion with which to pivotally operate the shaft; a plurality of cams which are mounted on the shaft so as to correspond to each of the plurality of electromagnetic operation device main body sections; and a link member which, being provided between the shaft and a movable shaft of each of the electromagnetic operation device main body sections, is pivotably supported on a rotation shaft supported on the frame, and one end portion and the other end portion of which are in contact respectively with the cam and with the movable shaft, wherein a configuration is such as to cause the shaft to pivot in accordance with opening operation of the handle portion, causing a plurality of the movable shafts to move at the same time via the cams and the link members, characterized in that the manual operation section includes a plunger which, having incorporated therein a compression spring, is fixed to the frame and a plunger cam which, interlocking with the plunger, is fixed to the shaft, wherein a configuration is such that in the intermediate position of a rotation range of the shaft when in opening operation, the apex portion of the plunger cam comes into contact with the plunger and compresses the compression spring. a shaft which, being pivotably held on a frame of an electromagnetic operation device main body section which operates each of the switches, is disposed spanning a region in which are aligned a plurality of the electromagnetic operation device main body sections; a handle portion having a grip portion with which to pivotally operate the shaft; a plurality of cams which are mounted on the shaft so as to correspond to each of the plurality of electromagnetic operation device main body sections; and a link member which, being provided between the shaft and a movable shaft of each of the electromagnetic operation device main body sections, is pivotably supported on a rotation shaft supported on the frame, and one end portion and the other end portion of which are in contact respectively with the cam and with the movable shaft, wherein a configuration is such as to cause the shaft to pivot in accordance with opening operation of the handle portion, causing a plurality of the movable shafts to move at the same time via the cams and the link members, characterized in that the manual operation section includes a plunger which, having incorporated therein a compression spring, is fixed to the frame and a plunger cam which, interlocking with the plunger, is fixed to the shaft, wherein a configuration is such that in the intermediate position of a rotation range of the shaft when in opening operation, the apex portion of the plunger cam comes into contact with the plunger and compresses the compression spring.