TruConnect 18A 5.0mm Terminal Blocks – TruConnect 21-3003, These 3-way terminal blocks from Rapid provide optimal control panel circuit connectors for every type of application. Voltage and current carrying capacity of these pluggable terminal blocks is 250V 18A per pole. They feature a tin-plated brass pin header and a nickel plated brass wire guard. TruConnect 3 Way 18A Terminal Block 5mm