Circuit breaker 240V 10kA, 1-pole, D, 30A, T=70mm according to UL 489. The circuit breaker is the automatic fuse for short-circuit protection. The circuit breakers from Siemens, as an essential component of the SENTRON protection devices for electrical installations, provide effective protection for people and equipment by safely disconnecting in the event of overload and short circuits. Convenient mounting and connection technology, uniform additional components, and a consistent design are the hallmarks of this device family. Whether for infrastructure or industrial requirements, Siemens offers circuit breakers for all applications and every area of use. Siemens circuit breakers are particularly characterized by: 1. Effective protection for people, investments, and equipment against overload and short circuits. 2. Uniform accessories in a wide variety, easy to install and always interchangeable. 3. Reliable safety during installation thanks to standard included grip and touch protection. 4. Clearly visible switching position indicator. 5. Datamatrix code on the front of the device provides quick and easy access to all information about the circuit breaker. 6. Compliance with standards with worldwide approvals.