NL276C3G is a panel mounting indicator light from Bulgin's range of neon, LED, and filament lamp indicators. Based on the part number structure, it appears to be a variant of the (C) 0276 00 series indicator with specific color and voltage options. The indicator features multiple terminal options and is designed for panel mounting applications. These indicators are commonly used in control panels, equipment status displays, and industrial applications where visual indication is required.