CIRCUIT BREAKER CONTACT ARM

A contact arm (104) for a circuit breaker (100) with a body (200) extending along a body axis (206) between a first end (202) and a second end (204), the body (200) comprising: an interior surface (220); an exterior surface (222); and a fin (234) extending between the interior surface (220) and the...

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Bibliographic Details
Main Author RETZLAFF, SCOTT G
Format Patent
LanguageEnglish
French
Published 20.11.2018
Subjects
BASIC ELECTRIC ELEMENTS
ELECTRIC SWITCHES
ELECTRICITY
EMERGENCY PROTECTIVE DEVICES
RELAYS
SELECTORS
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Summary:A contact arm (104) for a circuit breaker (100) with a body (200) extending along a body axis (206) between a first end (202) and a second end (204), the body (200) comprising: an interior surface (220); an exterior surface (222); and a fin (234) extending between the interior surface (220) and the exterior surface (222), where the body (200) defines a fin opening (238) adjacent the fin, the fin opening extending between the interior surface and the exterior surface, the interior surface defining: a substantially hollow interior; and a body opening (226) at the first end (202) in fluid communication with the interior (224), where air flows (412) through the body opening (226), into the interior (224), and from the interior (224) out through the fin opening to reduce a temperature of the contact arm. A fastener opening (300) is at the second end (204), the body (200) being configured to receive a fastener through the fastener opening (300) to attach the contact arm (104) to a terminal.
Bibliography:Application Number: CA20162976036