This is 3.0 mm pitch wire to board connector for DC power supply. Applicable wire is AWG#20-24, Current rating is 5 A AC,DC. Voltage rating is 250V AC,DC.
This is 2.0 mm pitch wire to board connector for DC power supply. Applicable wire is AWG#26-28, Current rating is 1A AC,DC. Voltage rating is 250V AC,DC.
This is 4.0 mm pitch wire-to-board connector for DC power supply. Applicable wire is AWG#26-30, Current rating is 1A AC,DC. Voltage rating is 100V AC,DC.