Title:
CIRCUIT BREAKER
Document Type and Number:
Japanese Patent JP2003199243
Kind Code:
A
Abstract:
To provide a circuit breaker which is used between a phase conductor and a neutral conductor and has an overvoltage detecting circuit such as a metal oxide varistor in a trip circuit thereof.
An overvoltage detecting circuit enables a trip coil to block a high surge voltage at a time of a surge test and, if a sufficiently large phase conductor-neutral conductor voltage is applied to a circuit breaker for a proper duration time, energizes the trip coil to trip the circuit breaker.
Inventors:
ELMS ROBERT TRACEY
NATILI THOMAS EDWARD
NATILI THOMAS EDWARD
Application Number:
JP2002323597A
Publication Date:
July 11, 2003
Filing Date:
November 07, 2002
Export Citation:
Assignee:
EATON CORP
International Classes:
H02H3/20; H01H83/02; H01H83/10; H02H3/33; H02H7/22; H02H9/04; H02H1/00; (IPC1-7): H02H3/20; H01H83/02; H01H83/10
Attorney, Agent or Firm:
Koichiro Kato
Previous Patent: CURRENT LIMITER, MANAGEMENT SYSTEM, AND POWER SUPPLY METHOD
Next Patent: BURNING PROTECTOR FOR MOTOR
Next Patent: BURNING PROTECTOR FOR MOTOR