Liebert II - page 9

Electrical Connections 5

Disconnect Switch—TVSS units must be connected to the load side of the main service discon-

nect, or load side of a protected circuit’s disconnecting means.

Interceptor II “SI” Models with an “R” designator in the part number, are equipped with an inter-

nal disconnect switch, that can be used to de-energize the unit’s transient surge suppressing com-

ponents for servicing.

Table 3 Voltage ratings and power source configurations

Source Configurations Nominal Operating Voltage Model Voltage

L-N L-L L-G Code

Single Phase L-N 2W+G

120 N/A 120 120N

230 N/A 230 230N

277 N/A 277 277N

Single Phase L-L 2W+G

N/A 208 208 208L

N/A 240 240 240L

N/A 480 480 480L

Split Phase 3W+G

120 208-240 120 120S

230 400-460 230 230S

277 480-554 277 277S

Three Phase Delta 3W+G

N/A 208 208 208D

N/A 240 240 240D

N/A 480 480 480D

Three Phase Delta Hi-Leg 4 W+G

120 240 120 240H

240 480 240 480H

Three Phase Wye 4W+G

120 208 120 120Y

230 400 230 230Y

277 480 277 277Y

For other voltages or source configurations, consult factory.