WAGO 250-603 3 Pole 7.5mm 17.5A 45° Push Button PCB Terminal Block...

WAGO-250-Series-PCB-Pushbutton-Terminal-Blocks-7-5mm-WAGO-250-603-p-A-3-way-pushbutton-PCB-terminal-block-from-WAGO-with-7-5mm-pitch-p-WAGO-250-603-3-Pole-7-5mm-17-5A-45-Push-Button-PCB-Terminal-Block-Grey

Price: 1.17 from Rapid Online Rapid Electronics Ltd.