High strength hot dip galvanized structural steel base frame with field-adjustable mounting provisions. Maintenance-free dry lubricant bearings. Non-magnetic hardware used in the current path (mainly stainless steel). High-conductivity copper blades and terminal pads with silver-plated hard drawn copper contacts. Contact pressure is maintained by a stainless steel coil spring.
LS1 ROTATING INSULATOR BEARING
The rotating insulator bearing is a key part of a side break disconnect switch. The best current-carrying design is useless if not mated to a high strength and reliable bearing like the EMSPEC design.