MGE UPS Systems GES-102L - Manual (Page 9)

Always “On” UPS Systems Inc.
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16. INPUT CIRCUIT BREAKER
It trips when the connected loads exceed the protected receptacle's capacity. The center plungers
of the circuit breakers extend when tripped.
17. SITE WIRING FAULT INDICATORS (RED LED)
It illuminates when the UPS is connected to an improperly wired AC power outlet.
Note: This device is available on 120 VAC model only.
18. COMPUTER INTERFACE
Provides both RS-232 and relay signal to support NOVELL, UNIX, DOS, WINDOWS and other
operating systems.