The ABB A1A040TW-1 is a robust circuit breaker designed for optimal performance and safety. This model, part of the A1A 100 series, features a trip mechanism adjustable from 40 to 400 amps, suitable for a wide range of applications. It is a single-pole device, ensuring efficient protection for electrical circuits. Certified under UL standards, this circuit breaker guarantees compliance with safety regulations. With a net weight of 12.32 ounces, it is both lightweight and durable, making installation and maintenance straightforward. Ideal for both residential and commercial settings, the ABB A1A040TW-1 combines reliability with ABB's trusted engineering excellence.