| 摘要 |
A ring circuit safety breaker for providing over current protection to an electrical ring circuit connected to a mains power supply. The electrical ring circuit comprises a neutral ring and a live ring and a current that flows in two opposite directions about the live ring. The ring circuit safety breaker also comprises a means for current differential detection and a means for disconnecting the electrical ring circuit from the mains power supply. The means for current differential detection detects a current differential between the live ring and the neutral ring when a disconnection is present in either the neutral ring or the live ring and; when the disconnection is detected the means for disconnecting the electrical ring circuit from the mains power supply, disconnects the electrical ring circuit from the mains power supply. <Figure 1> |
