ABB CL2-523R Relay

ABB CL2-523R Pilot Light is a compact 22 mm indicator lamp with an integrated LED designed for front-panel signaling in industrial control systems. The red LED pilot light operates from 230 V AC and uses a built-in LED rather than a replaceable bulb, delivering bright status indication with low maintenance for demanding environments. The exact ABB catalog reference is 1SFA619403R5231, and CL2-523R is part of ABB’s 22 mm CL2 family of pilot devices, which also includes color variants such as CL2-523G (green), CL2-523Y (yellow), CL2-523L (blue), and CL2-523C (clear), enabling consistent signaling across multi-color panels. This panel-mount indicator is commonly used to show machine state, interlocks, alarms, or start/stop conditions in automation panels, conveyors, and process lines, providing a clear, immediately recognizable red signal to operators and control logic alike. With ABB’s 22 mm CL2 design, installation is straightforward in compact control enclosures, offering a durable LED solution that avoids bulb replacements and aligns with ABB’s modular CL2 pilot-device ecosystem.