Specifications

Safety Information
Safety-4
 Use the switch only with the indicated power supply setting.
z Do not use the switch at any voltage other than the indicated voltage. Doing so could result in a fire or
electric shock.

The current capacity of a distribution panel must be greater than that of the operating
current fed to the circuit breaker.
z The current capacity of a distribution panel must be greater than that of the operating current fed to the
circuit breaker. If it is not greater, the circuit breaker might not operate properly if a circuit abnormality
is detected, which could result in a fire.

Ground the switch.
z When using an AC (PoE) model, redundant power model (with an AC power supply module installed),
and an EPU, use only a grounded power outlet. Using a switch without grounding might not only result
in electric shock, but it might also introduce unwanted electrical noise that could cause a switch failure.
z When using a DC model and a redundant power model (with a DC power supply module installed),
connect a ground cable to ground the switch. Failure to do so might not only result in electric shock, but
it might also introduce unwanted electrical noise that could cause a switch failure.

Mounting and removing the -48 V DC power cable must be done by a trained
technician or maintenance personnel.
z Mounting and removing the DC-48 V power cable must be done by a trained technician or maintenance
personnel. Because -48 V DC power cables are connected to a power supply using terminals, mishandling
the cables could result in a fire or electric shock.

Make sure that the power facility circuit breaker is set to OFF before connecting or
disconnecting a -48 V DC power cable.
z Make sure the power supply circuit breaker is set to OFF before connecting or disconnecting a -48 V DC
power cable. Connecting or disconnecting the cable with the circuit breaker set to ON could result in a
fire or electric shock.

Place an insulation cover over the G and -48 V terminals of a -48 V DC power cable
z Place an insulation cover to the G and -48 V terminals of a -48 V DC power cable (on the side grounded
to the power supply). Using the terminals without an insulation cover could result in electric shock.