18EZ-4-30產(chǎn)品概述
18EZ SCR controls provide zero-fired proportional control of three-phase AC voltages to constant resistance heating elements. These units are solid-state replacements for variable transformers, saturable core reactors, mercury relays and electromechanical contactors. Power semiconductors replace contacts and brushes to switch electric power without moving parts, and when operated within their stated ratings for current, voltage and temperature, have no known MTBF or life expectancy rating. Size units by actual load current, not kW. Zero harmonics...100% power factor.