Siemens Industry Online Support
Siemens AG
Entry type: FAQ, Entry ID: 21656695, Entry date: 05/13/2014

Pulling forces for conductors with Cage Clamp connection technology

  • Entry
  • Associated product(s)


What pulling forces apply for round copper conductors that are connected to spring-type terminals of  low-voltage switchgear?




Acc. to table 5 of IEC 60947-1 round copper conductors that are connected to low-voltage switchgear, must withstand the following pulling forces:

Extract of table 5

cable cross section maximum pulling force
1,5 mm² 40 N
2,5 mm² 50 N
4 mm² 60 N
6 mm² 80 N
10 mm² 90 N
16 mm² 100 N
25 mm² 135 N


Security information
In order to protect plants, systems, machines and networks against cyber threats, it is necessary to implement – and continuously maintain – a holistic, state-of-the-art industrial security concept. Siemens’ products and solutions constitute one element of such a concept. For more information about industrial security, please visit