Three phase vacuum contactor rated at 12kV and 400 amperes. (Courtesy GEC Alsthom)

Three phase vacuum contactor rated at 12kV and 400 amperes. (Courtesy GEC Alsthom)

Three phase vacuum contactor rated at 7.2kV and 400 amperes. (Courtesy GEC Alsthom.)

Three phase vacuum contactor rated at 7.2kV and 400 amperes. (Courtesy GEC Alsthom.)

Vacuum contacts are sealed inside a vacuum chamber. (Courtesy GEC Alsthom.)

Vacuum contacts are sealed inside a vacuum chamber. (Courtesy GEC Alsthom.)

Open magnetic contactor with blow-out coil used for control of direct-current devices.

Open magnetic contactor with blow-out coil used  for control of direct-current devices. Contactor is of the
“clapper” type.

NEMA- and IEC-rated load contacts.

  

NEMA- and IEC-rated load contacts. NEMA size 00 contact is shown on the left and IEC size 00 contact is shownon the right.

Contactor Failure

Contactor_Failure