to the coil 51 in a state in which the current of 500 a is supplied between the fixed contacts 33 a and 33 a and the movable contacts 48 a and 48 a at a direct current voltage of 400v so that the fixed contacts 33 a and 33 a and the movable contacts 48 a and 48 a may separate from each other at this time as illustrated in fig1 in the sealed contact device with the arc shielding member 61 as illustrated by a solid line even though the experiment was repeated 20 times it turned out that degradation of the fixed contact 33 a and the movable contact 48 a attributable to an arc was inhibited and an abrupt decrease in an insulation resistance value of the sealed contact device was prevented on the other hand in the sealed contact device without the arc shielding member 61 as illustrated by a dotted line when the experiment was repeated 5 times it turned out that the fixed contact 33 a and the movable contact 48 a were degraded due to an arc which occurred and the insulation resistance value of the sealed contact device abruptly decreased the inventors of the present application measured duration of the arc which occurred when the fixed contact 33 a and the movable contact 48 a are separated as compared with the sealed contact device without the arc shielding member 61 the duration of the arc is shortened by 12 5 in the sealed contact device with the arc shielding member 61 as for the sealed contact device according the present invention it is needless to say that it may apply not only to the above mentioned sealed electromagnetic relay but.