Design and Connection System
26
7SS52 V4 Manual
C53000-G1176-C182-3
2.3.2.1
Screw-Type Terminals
Connection
The voltage connections of the central unit and the voltage and current connections of
the bay units have screw terminals. For assignment of the terminals, please refer to
the Figures A-3, page 342 and A-5, page 345 in the Appendix.
Connection method
Use copper conductors only!
You can use solid conductors or stranded conductors with end sleeves.
You can use end sleeves with plastic collar (acc. to DIN 46228 P. 1) that have a cross-
section between 0.5 mm
2
and 4 mm
2
(equivalent to AWG 20 to 12) and a length up to:
Tools
Use a screwdriver for slot-head screws size 6
×
1.
Use a crimping tool for end sleeves between 0.5 mm
2
and 6 mm
2
(equivalent to
AWG 20 to 10) with or without plastic collar.
2.3.2.2
Double Leaf-Spring-Crimp Contacts
Connection
The voltage connections of the central unit and the voltage and current connections of
the bay units have double leaf-spring-crimp contacts. For assignment of the terminals,
please refer to the Figures A-3, page 342 and A-5, page 345 in the Appendix.
Connection method
(current terminals)
Use copper conductors only!
Use stranded conductors with a cross-section between 1.5 mm
2
and 2.5 mm
2
.
Use double leaf-spring-crimp contacts type L with 2 snap lugs that match the selected
conductor cross-sections.
Connection method
(voltage
terminals)
Use copper conductors only!
Use stranded conductors with a cross-section between 0.5 mm
2
and 1 mm
2
.
Use double leaf-spring-crimp contacts that match the selected conductor cross-sec-
tions.
Tools
Use a crimping tool for the double leaf-spring-crimp contacts.
Conductor
cross-section
Length (without collar)
0.5 mm
2
0.75 and 1 mm
2
1.5; 2.5 and 4 mm
2
10 mm
12 mm
18 mm
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