23
Take note of the maximum connectable conductor cross-section for the
terminals. If no other data is available on the terminals, refer to the following
table.
Table 6: Rated cross-sections
Shaft height
Rated cross-section [mm
2
]
63 to 112
4
132 to 160 10 (r)
180 to 225 70
250 to 280 120
315 150/ 300 (depending on the model)
over 355 300
In the case of "increased safety" terminal boxes, make sure to comply with
the clearances specified in EN 50019 (Î Table 7) between conductive parts
having different potentials. Tighten the screws and nuts on the live parts to
the specified torque (ÎTable 8).
Table 7: Clearances
Rated voltage, U [V]
Minimum clearance [mm]
175 < U ≤ 275
5
275 < U ≤ 420 6
420 < U ≤ 550 8
550 < U ≤ 750 10
750 < U ≤ 1100 14
2200 < U ≤ 3300 36
5500 < U ≤ 6600 60
8300 < U ≤ 11000 100
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