Circuit interrupter apparatus with a selectable display means.

摘要

A circuit interrupter includes a circuit arrangement for sampling [Fig. 12 (79, 82)] a conditioned current value and determining operating characteristics [Fig. 3 (100)] related to the current flow through an electrical circuit [Fig. 3 (71)]. Also included is a circuit arrangement for comparing [Fig. 16 (F200)] the operating characteristics to preselectable tripping parameters and for initiating a trip condition [Fig. 16 (F400)] when an operating characteristic exceeds a corresponding tripping parameter. Additionally, a circuit arrangement for selecting and displaying [Fig. 16 (F600)] operating information in an understandable format [Fig. 6 (120)] and in an easily accessible position [Fig. 5 (120)] on the circuit interrupter is also included.