When you're dealing with electrical connections in wet, corrosive or hazardous environments, Russellstoll® plugs, connectors and receptacles provide power where you need Maintenance: maintenance free and range from 16 to 400 A. Fully Polarized: offers full polarization for exact voltage, frequency and phases, power supply ratings can't mix. Quick Installation: solderless, pressure screw terminals and rear access, combined with take-apart housings, means quick wiring access.