1SIN611621R1043

ABB 1SIN611621R1043 (MLBL-04YN) is a yellow modular LED illumination block designed for industrial control panels, pilot lights, illuminated push buttons, and automation systems. Operating at 110–130V AC, it features an integrated yellow LED that provides clear visual indication of equipment status, warning conditions, and electrical control signals. Part of ABB's modular pilot device range, this compact illumination block is suitable for assembling compatible ABB signaling devices.