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Class 1, Division 2 use for 9001K and 9001SK operators

Issue:
Under what conditions can 9001K or 9001SK operators be used in Class 1 Division 2 applications?

Product Line:
9001K and 9001SK operators

Environment:
US Product

Cause:
Class 1 Division 2 applications do not necessitate the need for NEMA 7 or NEMA 9 control stations

Resolution:
9001K and 9001SK operators can be used for Class 1 Divsion 2 Groups A, B, C, D applications so long as all of the following restrictions are observed:
1) Only logic (9001KA40) or power (9001KA50) reed contact blocks are used
2) All type K or SK illuminated operators are UL approved for use in Class 1 Division 2 areas - push to test single lamp pilot lights require Y243 form code.
3) Type KX illuminated operators do not use four lamp modules or 2 lamp modules other than the transformer type.
4) The operators are mounted in any NEMA 4 or NEMA 13 enclosure
5) Potentiometers are not used