Circuit breaker with arc quenching baffle arrangement

Details Circuit breaker with arc quenching baffle arrangement Circuit breaker with arc quenching baffle arrangement

1976-01-16

1978-03-21

Macon, Robert S.

Electricity: circuit makers and breakers

Liquid contact

Time delay

H01H 3308

Patent

active

040805204

ABSTRACT:
An arc quenching arrangement is disclosed for a circuit breaker equipped with stationary contacts and a contact bridge having respective sides facing toward and away from the stationary contacts. The contact bridge is movable between closed and open positions to respectively contact and separate from the stationary contacts, whereby an arc is formed as the contact bridge moves away from the stationary contacts to the open position. The arc quenching arrangement quenches the arc and includes an arc guide having a longitudinal axis. The arc guide is located adjacent the side of the contact bridge facing away from the stationary contacts and is positioned such that the longitudinal axis thereof extends in a direction substantially parallel to the longitudinal dimension of the contact bridge. The arc guide has respective end portions bent in a direction away from the contact bridge; these end portions are located in the vicinity of the respective ends of the contact bridge. Each of the end portions is bent so as to form an acute angle .alpha. with the longitudinal axis in the range 15.degree.<.alpha..ltoreq.75.degree.. This configuration prevents the arc from entering the region between the contact bridge and the arc guide.

REFERENCES:
patent: 2356040 (1944-08-01), Ellis et al.

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