The 1587T11A1S is a pilot light surge indicator designed to provide visual indication and surge protection for electrical systems. It features a resettable circuit breaker, 6-foot power cord with NEMA 5-15P connector, and is housed in an anodized aluminum extrusion case with ABS plastic components. The unit is rated for 125 VAC, 60 Hz operation at 15 Amps and provides 1080 Joules of surge energy absorption with a 500V Voltage Protection Rating (VPR) and 75,000 Amps transient current capacity. It is cULus Listed to UL1449 and C22.2 No. 269.3-17 standards, ensuring compliance with North American safety requirements. The product includes a mounting bracket kit with hardware for easy installation and is commonly used in industrial control panels, power distribution systems, and equipment requiring surge protection and operational status indication.