1SFA611621R1055

ABB 1SFA611621R1055 (MLBL-05W) is a white modular LED illumination block designed for industrial control panels, pilot lights, illuminated push buttons, and automation systems. Operating at 110–130V DC, it features an integrated white LED that provides clear visual indication of equipment operating conditions, machine status, and electrical control signals. Part of ABB's modular plastic pilot device range, this compact block supports front mounting with compatible ABB signaling operators and mounting accessories.