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Which transient suppression module is used with 8903L contactors with the Y145 form code?

Issue:
Which transient suppression module is used with 8903L contactors with the Y145 form code?

Product Line:
8903L lighting contactors, specifically form Y145

Environment:
US Product

Cause:
This module is not defined in documentation

Resolution:
The 9999ST1 suppression module is used with these contactors.  It is wired in parallel with the coil.  On mechanically held devices, there is one module for each coil.  This unit cannot be field installed as it requires a special mounting bracket not available for general sale.
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