General Electric Company

Hanns P Sailer

David J Lesslie

Esteban Santos

Paul H Singer

Ira B Goldman

Robert J Danek

Indrajit Purkayastha

Mark S DeBiasi

A digital circuit interrupter utilizing current transformers for operating power is provided with a re-chargeable battery to power-up the trip unit as well as to power the display after an overcurrent trip occurrence to enable an operator to determine both the magnitude as well as the cause of the overcurrent condition.

Digital circuit interrupter with battery back-up facility

An electronic circuit interrupter digital display and keypad device includes a display to view circuit breaker settings combined with a keypad to select settings and values to be displayed. The display and keypad device connects to an electronic trip unit within the circuit interrupter by means of a tamper-free seal to prevent the circuit interrupter set points from being changed without authorization. Alternatively, a password-operated control switch provides a similar function.

Electronic circuit interrupter with combined keypad and display

Growing community of inventors

Plainville, CT, United States of America

Hanns P Sailer