Siemens SIMATIC ET 200SP System Manual page 109

Wiring
6.9 Wiring BaseUnits for motor starters
Releasing conductors
To release a conductor, proceed as follows:
1. Press the screwdriver into the spring release of the terminal until it engages.
2. Pull the conductor out.
Note
When pressing the spring release, you must not pull on the wire/cable at the same time. In
this way, you avoid damaging the terminal.
108
Distributed I/O system
System Manual, 09/2019, A5E03576849-AJ