Comtech EF Data SMS-458B - Manual (Page 13)

SMS-458B Modem Protection Switch Revision 2
Preface MN/SMS458B.IOM
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E
LECTRICAL
S
AFETY
The SMS-458B Modem Protecrtion Switch has been shown to comply with the following safety
standard:
• EN 60950: Safety of Information Technology Equipment, including electrical business
machines.
The equipment is rated for operation over the range 90 to 264 volts AC. It has a maximum
power consumption of 160 watts.
F USES
The SMS-458B Modem Protecrtion Switch is fitted with two fuses, one each for line and neutral
connections. These are contained within the body of the IEC power connector, behind a small
plastic flap.
• For 230 volt AC operation, use T0.75A, 20mm fuses.
• For 115 volt AC operation, use T1.25A fuses, 20mm fuses.
IMPORTANT
For continued operator safety, always replace the fuses with the
correct type and rating.
Environmental
The SMS-458B Modem Protecrtion Switch must not be operated in an environment
where the unit is exposed to extremes of temperature outside the ambient range 0 to 50°C
(32 to 122°F), precipitation, condensation, or humid atmospheres above 95% RH,
altitudes (un-pressurized) greater than 2000 meters, excessive dust or vibration,
flammable gases, corrosive or explosive atmospheres.
Operation in vehicles or other transportable installations that are equipped to provide a
stable environment is permitted. If such vehicles do not provide a stable environment,
safety of the equipment to EN60950 may not be guaranteed.