Siemens 3VA1 100 A Manual page 167

Solid and stranded sector-shaped conductors are also used.
Cable lugs and wire-end ferrules
Cables are connected by means of lugs and wire-end ferrules to the molded case circuit
breaker in order to provide stable, safe connections. These elements help to make solid
connections at the breaker.
The cable is first stripped over the distance L before the cable lug or wire-end ferrule is
attached to the cable.
The cable must be stripped carefully to ensure that the correct amount of insulating material
is removed. If too much material is removed, it will not be possible to make a secure
connection between the cable and cable lug or wire-end ferrule.
Compression cable lugs compliant with DIN 46235 have ideal heat transfer characteristics
for connecting busbar connectors. By contrast, "Tubular cable lugs with narrow palm for
switching devices" (designation "SG" for example) must be used to make direct cable
connections in the termination area of the molded case circuit breaker. These cable lugs
vary in design depending on make. All cable lugs of this kind with the dimensions stipulated
in standard IEC 609437-1, Annex P are basically suitable.
3VA molded case circuit breakers
Manual, 04/2015, A5E03603177010-02
Accessories
4.3 Connection system
167