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LUA1C vs LUFN What's the difference and how many blocks can we add in to the Tesys U line base?
Environment:
Products sold and used in the United States

Cause:
Selecting auxiliary contact modules for the Tesys U motor starter line.

Resolution:
The LUA1C modules will have a ready condition contact and a fault condition contact, while the LUFN has contacts that are both pole state contacts.
See the table below (From Digest 178, Sec 18, Tesys Ultra Combination Motor Controllers )
Contact State Table

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