Dispositivo de protección de circuitos y conjunto de protección de circuitos que lo incluye

Circuit protection device and circuit protection set that includes it. The invention discloses a circuit protection device and a circuit protection assembly including it. The circuit protection device includes a mechanism assembly configured to disconnect a load and the current protection device from a main line; a mains frequency surge drive assembly that acts to drive the mechanism assembly when a mains frequency voltage is overloaded; a circuit board connected to the main line and to ground, and configured to control the mains frequency surge drive assembly to act when the mains frequency voltage is overloaded; a set of contacts including a first state and a second state, under a normal working voltage the contact set is in the first state in which it provides an effective power supply to the circuit board, and when the frequency voltage of the network is overloaded and the drive assembly of the network frequency overvoltage acts to drive the mechanism assembly, the set of contacts is in the second state; and a transient current protection means connected to the circuit board and performing overvoltage protection in a transient current condition. The invention simultaneously realizes the protection against transient currents and the protection against network frequency overvoltages and can realize the overvoltage protection of the transient current protection means, extend the service life of the transient current protection means, and effectively protect the equipment. and staff safety. (Machine-translation by Google Translate, not legally binding)