Circuit breaker h3+ P160 TM ADJ 3P3D 125A 40kA CTC. The molded case circuit breaker in accordance with DIN EN 60947-2 protects the electrical system and networks against overload and short circuit. The thermal release for the overload current (Ir) and the magnetic release for the instantaneous short circuit current (Ii) can be set separately. The three different operating states can be recognized by the position of the toggle (ON = top, OFF = bottom, triggered = middle position). A device for locking the switching state in the ON or OFF position is integrated and can be used with a standard padlock without additional accessories. The release mechanism can be tested and the main contacts opened using a release button. A hinged cover with a captive quick-release screw allows access to the installation space for optional auxiliary contacts and other releases. Integrated accessories can be recognized and identified via a viewing window without opening the hinged cover.