147924 / 8146647300
2018-12-06·BA00·III·en·12
Mounting and Installation
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Safety switch / load disconnect switch
Series 8146/5-V37, Series 8150/5-V37,
Series 8146/5-V11
7.3.7 Intrinsically Safe Circuits
7.3.8 Intrinsically Safe Auxiliary Contacts
DANGER
Explosion hazard due to incorrect installation of intrinsically safe
circuits!
Non-compliance can result in severe or fatal injuries.
• Only insulated conductors with a minimum test voltage of
500 V AC and a minimum quality of H05 are permitted in
intrinsically safe circuits (blue terminal blocks).
• Make sure that the diameter of individual conductors
(and individual finely stranded wires) must not be smaller than
0.1 mm.
• The overload protection of the consumers must be performed
independently of the back-up fuse.
DANGER
Explosion hazard due to creepage distances and clearances being too
short!
Non-compliance results in severe or fatal injuries.
• Do not operate the Ex i auxiliary contacts without attached cover!
• The customer is only allowed to install an intrinsically safe auxiliary
contact if NO pick-off terminal blocks are mounted on the two
terminals located on the left and right side of the installation
slot used!
• The customer MUST NOT install pick-off terminal blocks directly
next to the intrinsically safe auxiliary contacts!
12444E00
• Strip the conductor.
• Insert the conductor into the
terminals and make sure that
the conductor insulation
reaches right up to the
terminals.
• Tighten the mounting screws
of the terminals with 1.5 Nm.
• Insert the conductor into the
cable duct (1) of the covering
and fasten it by means of the
lug (2).
• Lead the conductor on the side
of the switch in order to avoid
crosswise wiring of the auxiliary
circuits to the main circuits.
1
2
Summary of Contents for Reihe 8146/5-V11
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