Patent ID: 6222146
Filing Date: 2001-04-24
Classification: H01H

Abstract:
An arc quenching chamber for a low-voltage circuit breaker, comprising:a quenching chamber enclosure having a first extension on a side for attaching to the circuit breaker, the first extension having a bore hole for receiving a fastening screw; anda quenching chamber cover attached to the quenching chamber enclosure, the quenching chamber enclosure having at least one horizontal nose-like projection on a top edge of at least one wall of the quenching chamber enclosure for attaching the quenching chamber cover to the quenching chamber enclosure, the quenching chamber cover having at least one claw-like extension for gripping the at least one horizontal nose-like projection and a bore hole aligned with the bore hole in the first extension of the chamber enclosure, the fastening screw extending through the aligned bore holes and into a matching thread of the circuit breaker.