How The Spring Terminal Works - Siemens Metro 21 M216KA Operator's Manual

Wiring
Terminal Block
with Spring
Terminal
!
3-10
To wire the terminal block (spring terminal), proceed as follows:
1. Strip the insulation of the wires down to 11 mm.
Remember to:
Insert the screwdriver in the lower opening.
Insert the cable in the upper opening until the stop.
Figure 3-3

How the Spring Terminal Works

4. Release the spring terminal of the first connection using a screwdriver
(0.5 x 3.5 mm DIN 5264). Begin at the bottom left of the terminal block.
5. Push the first wire into the released spring terminal and withdraw the
screwdriver.
6. Repeat steps 1 to 3 for all other wires.
Warning
There is a risk of injury and damage to property.
Connecting different phases of a three-phase system to a terminal block can
cause injury and damage to property.
Connect only one phase to each terminal block.
ET 200L, ET 200L-SC and ET 200L-SC IM-SC Distributed I/O Device
1. Insert the screwdriver
2. Insert the cable into the spring
terminal until the stop
3. Remove the screwdriver. The
cable is clamped to the contact
EWA 4NEB 780 6009-02c