Table 20: EX Series Switch Environmental Tolerances
(Continued)
Switch or
device
Environment Tolerance
Altitude
Relative Humidity
Temperature
Seismic
EX9251
The maximum
thermal
output is
1705 BTU/
hour (500 W).
No performance
degradation up to
10,000 ft
(3048 m)
Normal operation
ensured in relative
humidity range of 5% to
90%, noncondensing
Normal operation ensured
in temperature range of
32° F (0° C) to 104° F
(40° C)
Nonoperating storage
temperature in shipping
container: – 40° F (–
40° C) to 158° F (70° C)
Complies with
Telcordia
Technologies
Zone 4
earthquake
requirements
XRE200
No performance
degradation up to
10,000 feet
(3048 meters)
Normal operation
ensured in the relative
humidity range 10%
through 85%
(noncondensing)
Normal operation ensured
in the temperature range
41° F (5° C) through
104° F (40° C)
Complies with
Zone 4
earthquake
requirements as
per GR-63, Issue
4.
NOTE: Install EX Series switches only in restricted areas, such as dedicated equipment rooms
and equipment closets, in accordance with Articles 110– 16, 110– 17, and 110– 18 of the
National Electrical Code, ANSI/NFPA 70.
General Site Guidelines
Efficient device operation requires proper site planning and maintenance. It also requires proper layout
of the equipment, rack or cabinet, and wiring closet.
To plan and create an acceptable operating environment for your device and prevent environmentally
caused equipment failures:
• Keep the area around the chassis free from dust and conductive material, such as metal flakes.
• Follow prescribed airflow guidelines to ensure that the cooling system functions properly. Ensure
that exhaust from other equipment does not blow into the intake vents of the device.
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