Condition: New, unused. In the box. Reason for listing: Purchased as a spare part, but no longer needed due to a change in specifications. [About the product] This is an unopened, commercial-grade automatic reset circuit breaker. If the circuit is interrupted (tripped) due to lightning surges or temporary voltage drops, it will **automatically restore power (auto-reset)** after confirming safety. Applications: Unmanned equipment requiring constant power supply, such as mobile phone base stations and wireless relay equipment. For stable operation of remote monitoring systems and critical infrastructure. Features: Eliminates the need for manual restoration, reducing downtime and maintenance costs. Important: Installation requires a licensed electrician. This is a commercial-grade device for professional use. [Specifications] Function: Automatic reset (auto-reset)