The WT21L is a DPST non-illuminated environmentally sealed panel-mount Toggle Switch with ON-None-OFF switch function and wire-lead switch terminals. It has chrome-plated brass toggle, fiberglass reinforced polyamide bushing and outer case, melamine inner case, nitrile butadiene rubber inner sealing ring and natural rubber outer sealing ring with heat resistant polyvinyl chloride wire lead covers. Single unit construction of bushing and case gives added protection from environmental elements. Specially designed contact mechanism that breaks light contact welds for circuits 11, 12, 21 and 22. Interlocked movable contact mechanism provides highly reliable switching by minimizing contact bounce over centre contact.