RS Pro 8179381 Electrical (NEMA) Enclosure Accessories They come with two sets

They come with two sets of contacts

UL 1077 Characteristic C Curve Current Rating 40 A Length 2

and download the parameters to it

the embedded auxiliary contacts

and it is used to expand a safety circuit

RS Pro 8179381 Electrical (NEMA) Enclosure Accessories They come with two setsProduct Attribute Attribute Value Alternate Mfr Part Number ENP LD21 30 Color Black Connector Type NEMA L21 30P Current Rating 30 A Gender Male Mounting Type Cable Mount Shop By Factory Choice Standards UL Listed ; CSA UPC Code 5056112189657 Warranty 3 Year Warranty Overview RS NEMA L21 Twist Lock Plugs, 208V NEMA connectors are power plugs and receptacles used for AC mains electricity in North America and other countries that use the standards set by