Claims
- 1. A circuit breaker with an arc chamber vent baffle, comprising:
- an electrically insulating housing including line and load terminals;
- an arc quenching chamber within the housing;
- a circuit breaker structure within the housing and having stationary and movable contacts operable between open and closed positions in an arcing zone within the chamber;
- the housing having wall means forming a compartment for containing each terminal and having openings between the corresponding chambers and compartments;
- one of the openings being aligned with a terminal for access thereto;
- baffle means extending over the one opening to prevent any arc gases from flowing through the one opening and thereby avoiding a phase-to-ground electrical breakdown between the terminal and any proximate electrical conductor adjacent to the one opening; and
- the baffle means being deflectable by any tool inserted through the one opening for adjustment of the terminal.
- 2. The circuit breaker of claim 1 in which the baffle means is disposed within the compartment.
- 3. The circuit breaker of claim 2 in which the baffle means comprises a flap yieldably extending over the one opening.
- 4. The circuit breaker of claim 3 in which the flap is composed of fiber sheet material.
- 5. The circuit breaker of claim 4 in which the flap is a portion of a prefolded fiber sheet and having an attached portion for attachment to the housing wall means.
CROSS REFERENCE TO RELATED APPLICATION
This application is a continuation-in-part of copending U.S. patent application Ser. No. 760,384, filed July 30, 1985.
This application is related to the copending application Ser. No. 729,437 filed May 1, 1985, the invention of K. A. Grunert, R. E. Walker, C. R. Paton, and D. A. Leone (W. E. Case 52,632), assigned to the assignee of this application.
US Referenced Citations (2)
Number |
Name |
Date |
Kind |
2727966 |
Reichert et al. |
Dec 1955 |
|
2830158 |
Coleman |
Apr 1958 |
|
Foreign Referenced Citations (1)
Number |
Date |
Country |
572865 |
Feb 1958 |
ITX |
Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
760384 |
Jul 1985 |
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