APC Rack Automatic Transfer Switch, 12A, 230V SU043 User Manual

Read the following information before installing or operating 
your 

APC

 Redundant Switch.

• Do not work alone under hazardous conditions.
• Check that the power cord, plugs, and sockets are in 

good condition.

• To reduce the risk of electric shock when you can not 

verify grounding, disconnect the Redundant Switch from 
the power outlet before installing or connecting to other 
equipment. Reconnect the power cord only after all 
connections are made.

• Do not handle any kind of metallic connector before the 

power has been removed.

• Use one hand, whenever possible, to connect or 

disconnect signal cables to avoid a possible shock from 
touching two surfaces with different electrical grounds. 

• Connect the equipment to a three-wire 

AC

 outlet (two 

poles plus ground) that is connected to appropriate 
branch circuit/mains protection (a fuse or circuit 
breaker). Connection to any other type of receptacle may 
result in a shock hazard.

• To turn off and disengage the Redundant Switch, press 

and hold both 

UPS

 Off buttons for more than one second 

to switch the equipment off, then disconnect the 
Redundant Switch from the 

AC

 power outlet.

• Pluggable equipment includes a protective earth 

conductor which carries the leakage current from the 
load devices (computer equipment). Total leakage 
current must not exceed 

3.5

 mA.