Vacuum contactor type OZ-6/400 is a three phase AC power adapter (applying in circuits of DC is not acceptable) is designed for using in electrical equipment to connect the circuits rated voltage up to 6Kv in terms AC1-AC4. Contactor OZ-6/400 is made for the rated current switching and thermal equal to 400A. Since switching appear in a vacuum chamber and heat losses are small- the contactor is particularly suitable for use in chemical industry, mining industry in sealed enclosures or explosion and wherever required long-term and reliable switching operation. The contactor is made in accordance with the standards: PN-G 50003:2003, PN-EN 60947-4-1: 2001/A2: 2002.