What is the screw size of the output terminal on PCR-LE series?

The screw size of the input terminal is as follows:
PCR500LE, PCR1000LE and PCR2000LE: M4
PCR3000LE and PCR4000LE: M5
PCR6000LE and PCR9000LE: M8
For the details on how to connect a load, read the user’s manual – chapter of Connecting the Load.