ACB Panels

ACB Panels

An air circuit breaker is an electric protecting apparatus which is installed between an electric source and load units in order to protect a load unit and a load line from an abnormal current generated on an electric circuit and to perform distribution function for changing the electric power line to another line. The electrical systems in residential, commercial and industrial applications usually include a panel board for receiving electrical power from a utility source. The power is then routed through over current protection devices to designated branch circuits supplying one or more loads. Electrical power distribution systems and their components need protection from numerous types of malfunctions, including over current conditions, over voltage conditions, under voltage conditions, reverse current flow, and unbalanced phase voltages. These over current devices are typically circuit interrupters such as circuit breakers and fuses which are designed to interrupt the electrical current if the limits of the conductors supplying the loads are surpassed. Interruption of the circuit reduces the risk of injury or the potential of property damage from a resulting fire. Electrical distribution systems are often provided with circuit breakers, which open to break the circuit a prescribed time after detection of a malfunction condition. Circuit breakers are widely used in residential and industrial applications for the interruption of electrical current in power lines upon conditions of severe overcurrent caused by short circuits or by ground faults. Circuit breakers can interrupt an electric circuit due to a trip condition such as a current overload or ground fault. The current overload condition results when a current exceeds the continuous rating of the breaker for a time interval determined by the trip current.