The stripped wire inserts directly into the contact beam, which is held open by the insertion tool and closes to grip the conductor. The 0.157" (4.00mm) pitch gives enough room between circuits for the poke-in mechanism and for 250V creepage.
This receptacle accepts 18 AWG, 20 AWG, and 22 AWG solid or stranded wire. The poke-in contact is tin-plated copper alloy, adequate for the rated 4A per circuit in indoor, low-cycle applications.
