The MLBL-05Y is a modular LED block designed for control circuit applications, featuring an integrated yellow LED rated for 110-130 V DC operation. It delivers a luminance of 300 millicandelas with a rated current of 9.9 mA and operates at 50/60 Hz frequency. The block utilizes screw clamp connection terminals with IP20 degree of protection and is mounted on the front of compatible control devices. This LED block is compatible with a wide range of ABB modular control products and is ideal for status indication and visual feedback in industrial control panels and automation systems.