Allen-Bradley 800T-QSL10A Illuminated Pilot Light

Allen-Bradley 800T-QSL10A Illuminated Pilot Light is a 30mm amber indicator light in the 800T family, engineered to mount in Allen-Bradley 800T push-button blocks and provide a bright, reliable status signal in control panels. As part of Rockwell Automation’s Bulletin 800T lineup, the QSL10A variant denotes an amber-illuminated pilot light designed to integrate with the standard 30mm operator assemblies used across many machines and panel enclosures. The device is intended for use wherever an visible amber indication is required to mark a machine or process state, and its compact form factor allows replacement without reworking panel cutouts. Manufactured by Allen-Bradley, this part aligns with the 800T family’s mechanical interfaces, ensuring a consistent fit with compatible enclosures and accessory contacts in typical 30mm push-button configurations. In practice, amber indicator lights are used in signaling sequences for warnings, alarms, or process status in industrial automation environments, helping operators quickly identify which equipment or function is active. The QSL10A designation specifies the amber color option within the 800T-QSL10 family of illuminated pilot lights, providing a straightforward path to upgrading or repairing existing control panels while preserving a uniform appearance and operation with other 800T pilots and push-buttons.