The two outer holes are used to attach mounting studs beneath the baseboard. The larger centre hole is where the drive pin of the motor is positioned and threaded through the tie bar of the turnout.
Peco PL1005 Peco Lectrics Twistlock Point/Turnout Microswitch
PECO/UNKNOWN 'MULTI' GAUGE LOT OF 19 TWISTLOCK TWIN MICROSWITCH/ACCESSORY SWITCH
Peco Pl-1005 Twistlock Twin Microswitch
Peco Twistlock Twin Microswitch
Peco Lectrics, Twistlock Turnout Motor - Peco PL-1000
Peco PL1001 Peco Lectrics Twistlock Point/Turnout Motor & Microswitch
