ABB MLBL-01BW Industrial Indicator Light Module

ABB MLBL-01BW is a 22 mm panel-mount LED indicator light module that serves as the illuminating element for ABB’s modular pilot-device family, designed to be paired with back plates and standard mounting hardware to provide bright, front-visible status indication on control panels. The unit accepts 24 V AC or 24 V DC input and emits white illumination through a white lens, making it suitable for signaling a range of states—such as ready, run, or fault—without the need for separate incandescent indicators. Identified by ABB as 1SFA611621R2015, MLBL-01BW is listed in distributor catalogs under the MLBL series and is designed to slide into ABB’s 22 mm back-plates to complement compatible pushbuttons, switches, and selector modules. In typical industrial panels, this compact LED indicator module provides reliable, low-power illumination, helping operators quickly interpret equipment status at a glance while occupying minimal panel depth and wiring compared with larger indicator assemblies.