Original electrical trade vintage catalog for THE TRUMBULL ELECTRIC MANUFACTURING COMPANY, of Plainville, CT. Manufacturers of electrical control apparatus, including open knife switches, motor control centers, switchboards, theater control boards, busways, lighting panelboards, service entrance equipment, multi-breaker load centers, enclosed safety switches, industrial solderless connectors, manual and magnetic motor starters, industrial circuit breakers and distribution panelboards. Disbound from a large 1948 electrical construction materials book, this unique old eight page technical specifications brochure would display wonderfully matted and framed. A marvelous addition to your retro electric equipment library. Pages are detached and may contain a small amount of residual glue on edge.