The Eaton HNB-B10/1N/003 is a RCBO breaker with a current rating of 10A, a residual current of 30mA, a maximum surge current of 250A, and a voltage rating of 230V. It is used to protect against short circuits, ground faults, and overloading. The device works by breaking the circuit when an unsafe condition is detected, thereby preventing further damage. It is made from high quality materials, ensuring durable, reliable protection.