Accessories
4.10 Accessories for integration in the power distribution equipment
3WA1 air circuit breaker
Equipment Manual, 02/2023, 92310000002-06
343
4.10.3 Arc chute cover
4.10.3.1 Description
The arc chute cover is used with guide frames. It serves to protect power distribution
equipment components which are located directly above the circuit breaker. The arcing
spaces and consequently the required clearances to live or grounded components
located above the circuit breaker are minimized. You will find information about the
required safety clearances in Chapter Dimension drawings (Page 432).
Arc chute covers are available for withdrawable AC circuit breakers and non-automatic
circuit breakers with breaking capacity N, S, M and H.
Note
If the main contacts and arc chutes need to be replaced during maintenance, the arc
chute cover must always be replaced as well.
The arc chute cover for guide frames can be retrofit.
You will find more information in the operating instructions available on the internet
(https://support.industry.siemens.com/cs/ww/en/view/109783976).
4.10.3.2 Article number
You can purchase the accessories in the Siemens Industry Mall
(http://www.siemens.com/product?3WA9111-0AS*).
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