UL94-V2. Accepts SDK 799 and SDK 502 series, see typically: < 753-1674') 753-1674/ , < 753-1677') 753-1677/, < 753-1671') 753-1671/, < 753-1665') 753-1665/ , < 753-1661') 753-1661/, < 753-1706') 753-1706/, < 753-1700') 753-1700/ , < 753-1703') 753-1703/. Electrical Test Safety Threaded 4mm Socket Connectors SEB 6445 Series, Panel Mount. Schutzinger CAT III 4mm safety panel mount socket connectors , these SEB 6445 series threaded safety socket connectors feature a single pole and are utilised for the transmission of voltages, currents and electrical test data, part of the Shutzinger Ø 4mm safety programme range. Insulation PA6.6 M4 terminal Rated voltage 1000V / CAT III