KUP5A51-120VAC

120VAC Nominal Operating Coil with Indicator Lamp, SPDT, 10A Contact Rating, Specialized Visual Diagnostic Industrial Relay. The "51" engineering modifier mandates an internal neon or LED status indicator lamp wired in parallel with the 120V AC coil to supply immediate, real-time visual tracking confirmation of circuit excitation boundaries directly on the factory control panel floor, housed in a standard socket-pluggable structural chassis layout. Exact Industry Equals: KUP-5A51-120. [1]