Technical data

IZMX circuit-breakers, INX switch-disconnectors
Minimum clearances
CA01305001Z-EN www.eaton.com
97
Minimum clearances
Recommended safety clearances
The following information about safety distances is intended to provide a guideline for the installation of circuit-breakers in an enclosure.
Recommended enclosure clearance and ventilation
The illustration shows a typical enclosure.
The table below lists the associated minimum distances between enclosures and ventilation openings.
This information is intended as a guideline for constructing a suitable circuit-breaker enclosure. Ensure the integration complies with IEC 61439.
① Cell switch (optional)
② Locking facilities (optional)
③ Ventilation openings (do not cover!)
Enclosure clearance To insulated surface To grounded metal surface With cell switch or locking
facilities
mm mm mm
Withdrawable units a
b
0
25
0
25
0
25/75
Fixed mounted a
b
150
30
250
70
–
–
Width c Width of cassette + 75 mm
Height d 550 mm
Depth e 450 mm (front control panel bay)
Ventilation
holes
160 cm
2
(800 - 3200 A)
320 cm
2
(4000 A)
④ Top or rear vent
⑤ Rear or lower vent
100
b
b
b
a a
a
c
e
d
d
e
c
Top and bottom
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