54733BA26
1 – 36 02.2017
5 Explosion Protection Volume 1
Terminals • Permissible wire cross-section:
– with ferrules 0.5 - 1.5 mm
2
(AWG 21 - 16 flexible)
– without ferrules 0.5 - 2.5 mm²
(AWG 21 - 14 flexible or solid)
• Both stranded leads as well as solid wires are permitted.
• To connect stranded leads, the following can be used: Ferrules
or direct insertion of the strand into the terminal.
The connection of fine-wire stranded lead class 6, according to
IEC 60228, is only permitted with ferrules.
• Install the connecting cables in the terminal compartment so
that ...
– dirt and moisture is avoided in the terminal compartment;
– the wires are not damaged when stripping.
– the conductor insulation or the collar of the ferrule extends
into the housing of the terminal body;
– bare conductive parts of the lines (e.g. small wires of a
strand) do not protrude from the terminal body;
– the length of the ferrule or the stripped wire must be 10
mm, so that the wire is securely held in the spring-type ter-
minal;
– if ferrules are used, the conductor insulation extends into
the collar of the ferrule;
– clamped conductors and ferrules in the terminals must
comply with a pull-out test according to DIN 46228 for
1 minute:
30 N tensile force for 0.5 mm² cross-section and
50 N tensile force for 2.5 mm² cross-section
The crimped conductors in the ferrules must also pass this
tensile test.
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