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| Liebert
®
NXL
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500-750kVA UPS Installation Manual |
18
RIB must be Listed UL 489 (Molded Case Circuit Breaker) or UL 1066 (Low Voltage AC Power
Circuit Breaker) that are required to be used in UL-listed switchgear or switchboards. The circuit
breaker must have a short-time rating not exceeding 480V at 150K Amperes, for 5 cycles.
See
for required current ratings.
2.4.4 Inverter Output Breaker (IOB)
For systems that use Inverter Output Breakers (IOB), the controls for the Aux contacts, UVR,
Motor Operator (optional) and voltage sense will go between the Remote breaker and the UPS
Output I/O section. See
.
IOB must be Listed UL 489 (Molded Case Circuit Breaker) or UL 1066 (Low Voltage AC Power
Circuit Breaker) that are required to be used in UL-listed switchgear or switchboards. The circuit
breaker must have a short-time rating not exceeding 480 Volts at 150K Amperes, for 5 cycles.
Table 6
RIB UV coil, aux. contacts from UPS RIB CB interface board to remote CB1
Terminal Designation
Signal Name
Wire Size/
Max Length
From
To
Remote Breaker
Contacts
TB1101-1
RIB aux. common
#14AWG/
500ft. (150m)
TB1101-2
RIB aux. N.C. (closed = CB is open)
TB1101-3
RIB aux. N.O. (closed = CB is closed)
TB1101-4
RIB trip coil (-)
TB1101-5
RIB trip coil (+)
Remote RIB motor operator control contacts from remote breaker to UPS RIB CB interface board
(optional)
Remote Breaker Motor
Operator Contacts
TB1102-2
AC line
#14AWG/
500ft. (150m)
TB1102-5
Motor operator close
Remote RIB voltage sense from remote breaker to UPS
Remote Breaker
Voltage Sense
TB1-1
Voltage sense PH A
#14AWG/
500ft. (150m)
TB1-2
Voltage sense PH B
TB1-3
Voltage sense PH C
