MD motor disconnect switches are listed UL 508 Suitable for Motor Control (UL File E164864) and conforms to IEC standard 60947 3. It is in a compact NEMA 4X enclosure suitable for use in NEMA 1, 3, 3R, 4, 4X, and 12 applications. This auxiliary contact module has two normally open contacts. Auxiliary contact is UL listed and CSA certified.