A30 porcelain bus insulators and bus bar insulators (also referred to as bus supports) are utilized for high voltage applications where maximum uptime is paramount; switchgear, power transformers, and bus-duct manufacturers use A30 bus insulators or bus bar insulators where high cantilever strength is necessary. A30 porcelain bus insulators have a six inch (6') diameter to meet higher mechanical requirements. The high cantilever strength ratings meet the demands of industrial and utility customers around the world.

Meister International stocks A30 bus insulators for the following voltage classes:
5kv
7.2kv
15kv/ 95kv BIL
15kv/ 110kv BIL
23kv/ 150kv BIL

34.5kv/ 200kv BIL