The USB-A Male to Lightning Male PRO+ Charge & Sync Cable from Tough Tested is a sturdy cable with a built-in surge protector designed for Lightning-equipped devices. The circuit breaker protects your phone by automatically shutting off if it detects damaging voltage or current, preventing issues from overheating. There is no fuse to change and both the cable and your device will remain undamaged. Its PET polymer jacket makes it chemical, heat, and abrasion resistant for an additional layer of protection.