The MLBL-05R is a modular LED block designed for integration into control circuit devices and pilot device systems. It features an integrated red LED with a wavelength of 620 nm and a luminance of 250 millicandelas, rated for 110–130 V DC operation at a nominal frequency of 50/60 Hz. The block draws a rated current of 9.9 mA and is housed in a compact form factor with front mounting and screw clamp connection terminals rated IP20. This LED block is compatible with a wide range of ABB modular control products and is commonly used in industrial control panels, signaling applications, and status indication systems where reliable, long-life illumination is required.