Filter assembly for a circuit breaker arc chamber
First Claim
Patent Images
1. A circuit breaker comprising:
- a stationary contact;
a movable contact; and
an arc chamber disposed adjacent at least one of the stationary contact and the movable contact, and arranged to guide a flow of arcing gasses formed during an arcing event to exit the circuit breaker, the are chamber including a filter assembly comprising;
a coarse filter layer defining an outlet layer, having an upstream side with respect to the flow of arcing gasses, and a downstream side opposite the upstream side; and
a fine filter layer defining an inlet layer, disposed on the upstream side of the coarse filter layer.
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Abstract
A filter assembly for a circuit breaker arc chamber includes a coarse filter layer defining an outlet layer, having an upstream side and a downstream side opposite the upstream side, and a fine filter layer defining an inlet layer, disposed on the upstream side of the coarse filter layer.
23 Citations
19 Claims
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1. A circuit breaker comprising:
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a stationary contact; a movable contact; and an arc chamber disposed adjacent at least one of the stationary contact and the movable contact, and arranged to guide a flow of arcing gasses formed during an arcing event to exit the circuit breaker, the are chamber including a filter assembly comprising; a coarse filter layer defining an outlet layer, having an upstream side with respect to the flow of arcing gasses, and a downstream side opposite the upstream side; and a fine filter layer defining an inlet layer, disposed on the upstream side of the coarse filter layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A circuit breaker comprising:
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a housing enclosing a movable contact and a stationary contact, the moveable contact being selectively engageable with the stationary contact; and an arc chamber enclosed within the housing adjacent the stationary contact, and arranged to guide a flow of arcing gasses formed during an arcing event to exit the circuit breaker, the arc chamber including a filter assembly comprising a plurality of filter layers including; a first woven wire mesh filter defining a fine filter; and a second woven wire mesh filter defining a coarse filter; wherein the first woven wire mesh filter is nearer the stationary contact than the first woven wire mesh filter. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19)
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Specification