Littelfuse, Inc. Consists of a N version complying to ISO 1185, and an S version complying to ISO 3731 00585100

The system consists of a N (Normal) version according to ISO 1185, generally used for standard applications, and a S (Supplementary) version according to ISO 3731 used for additional connections. The S version can be distinguished by its white coloring and by the different order of the contacts preventing an incorrect connection to the N version. The series of sockets includes special models with 16 rear spade contacts (5 double and 2 triple) in order to split the electrical system of the trailer, avoiding the use of junction boxes. Standards: Conforms to ISO 1185 & ISO 3731 recommendations and standards Accepts all 7-pole plugs that conform to ISO 1185 & ISO 3731 Screw terminals are mainly intended for the replacement aftermarket Flat terminals are generally preferred by OEM harness manufacturers