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Are LK3 and LK4 shafts and handles compatible with one another?

Needs to know if products are compatible for replacement parts, etc.

Product Line:
LK3 and LK4 switches.

Products sold and used in the United States

No, they are not compatible with one another. LK3 must use the appropriate handles and shafts found in Supplemental Digest 176 page 17-3. The same is true for LK4 and those can be selected from Digest 176 page 8-8.
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