Patent ID: 8269128

Claim:
A vacuum switch tube, comprising: a first conductive rod and a second conductive rod, a first contact is disposed at an end of the first conductive rod, a second contact is disposed at an end of the second conductive rod, the first contact and the second contact are disposed facing each other and sealed in a vacuum tube body, wherein, contact bodies of the first contact and the second contact are spheres with spherical caps at two ends being cut off; the first contact and the second contact respectively comprise conductive members and magnetic members extending in the same direction and joining with each other to form the contact bodies; the cross section shape of the magnetic members is divided by a neutrality line into two unequal regions; and the magnetic member of the first contact and the conductive member of the second contact are correspondingly disposed, and the conductive member of the first contact and the magnetic member of the second contact are correspondingly disposed.