arc chute

arc chute

[′ärk ‚shüt]
(electricity)
A collection of insulating barriers in a circuit breaker for confining the arc and preventing it from causing damage.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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Quoting an MRT-3 engineer, Transport Undersecretary for Rails Cesar Chavez said that 'a misaligned arc chute touched the electrical box of the line contactor.'
The C-Series employs a unique arc chute design, which allows for higher interrupting capacities of up to 10,000 amps.