Cooper Power Systems has been manufacturing MOV disks for over two decades. We are recognized as an industry leader in the development and production of these highly engineered ceramics.

Our arrester center, located in Olean, NY, USA includes a dedicated, high-volume disk production facility that ranks among the world’s largest for the manufacturing of MOV disks. The highly automated manufacturing process ensures uniform physical and electrical characteristics. This state-of-the-art process begins with computer-controlled mixing of the proprietary powder formulation. Once pressed and sintered into a high-density ceramic, the disk surfaces are precision ground, then coated with full face conductive electrodes using plasma deposition technology.

Making MOV disks allows us to closely control production processes, ensuring that no underperforming disk ever gets into your arrester. The overall quality and durability of our MOV disks is unequaled. Our worldwide arrester manufacturing partners appreciate the value and efficiency that our new high volume, state-of-the-art manufacturing process offers.

Features of the MOV Disks:

• Full face metalized electrodes
• Glass or epoxy covered outer coating (collar)
• Meets IEC and ANSI standards
• 100% production tested
• ISO 9001 certified factory
• Available in ratings (Ur) of 3 kV, 3.33 kV, 4.5 kV and 5 kV
• All ratings available in 5 kA and 10 kA (IEC Class 1) disks

Why Buy MOV Disks From Cooper?


Metal Oxide Disks Impact Performance of Arresters

Technical Data Sheets

TD-227 kA, Normal-Duty 3kV and 3.33 kV
TD-228 10kA, Heavy-Duty 3kV and 3.33kV
TD-230 10kA, Heavy-Duty 4.5kV and 5kV
TD-231 5kA, Normal-Duty 4.5kV and 5kV
TD-241 Insulating Tape on Glass Collard Distribution MOV Disks