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You can purchase the accessories in the Siemens Industry Mall
(http://www.siemens.com/product?3WA9111-0BA71).
4.8.5
Cover for the electronic trip unit
4.8.5.1
Description
A two-part transparent cover is available as an accessory for the electronic trip unit.
• The top cover can be locked with a safety lock and prevents unauthorized resetting of
the reclosing lockout of the circuit breaker.
• The bottom cover positioned over the rotary switches of the electronic trip unit. The
cover can be sealed in order to prevent unauthorized changes to the settings of the
electronic trip unit.
• This lower cover is included in the scope of delivery of the circuit breaker and is
already mounted when the circuit breaker is delivered.
You will find more information in the operating instructions available on the internet
(https://support.industry.siemens.com/cs/ww/en/view/109783656).
4.8.5.2
Article number
Cover for the electronic trip unit
Cover for the electronic trip unit
Cover for the ETU300 electronic trip unit
Cover for the ETU600 electronic trip unit
You can purchase the accessories in the Siemens Industry Mall
(http://www.siemens.com/product?3WA9111-0EM22*). The scope of delivery includes
both the cover of the ETU electronic trip unit and the cover of the reset plunger.
3WA1 air circuit breaker
Equipment Manual, 02/2023, 92310000002-06
4.8 Accessories for protection against unauthorized operation
Accessories
Z-option
Article number
F40
3WA9111-0EM21
3WA9111-0EM22
313
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Troubleshooting
