The ABB A1N 125 TMF 20-400 1p F F is a Moulded Case Circuit Breaker (MCCB) featuring a 1-pole design with front terminals for easy installation and maintenance. Equipped with a thermomagnetic release (TMF) adjustable from 20 to 400A, it provides flexible and reliable circuit protection. This fixed-mounted breaker is ideal for industrial and commercial applications, offering dependable performance and enhanced safety in various electrical systems.