Attributes . Open core and coil; The Acme FINGER/GUARD line of touch-protected industrial control transformer designed to meet Acme?s rigid standards for mechanical durability as well as surpass agency and industry electrical standards; The FINGER/GUARD line is designed for all control applications and features integrally installed, durable molded plastic terminations designed to protect against contact with live components; No slip-on plastic covers to be broken, lost or misplaced; All FINGER/GUARD products use copper windings, high-permeability silicon steel cores; Constructed with high quality silicon steel lamination to minimize core losses and increase efficiency; Designs incorporate precision wound coils for improved regulation; Copper windings on all groups; Attractive finish, nameplate, and design features enhance the end product; Smaller, lighter weight design; 10-year limited warranty . Names