
Click 330/331 Ethernet Switch
INSTALLER QUICK-REFERENCE GUIDE
2
Wire power
Unlike many other Click devices, the Click 330/331 do not mount over the T-bus, meaning that power and
communications will have to be wired in into the device’s six screw
terminals. e rst four screw terminals, marked US1, GND, US2 and
GND, are for wiring power. (e other two, which are labeled R1 and
R2, are for security and functionality alarm purposes.)
1 Attach the device to a location on the DIN rail that is not over a
T-bus.
2 Attach a wire for +DC (red is standard) to the screw terminal
marked US1.
3 Attach a wire for -DC (black is standard) to the rst screw termi-
nal marked GND.
4 Attach the other ends of these two wires to a DC power source.
Note. US2 and the second GND are for wiring in a redundant power
supply, if you’d like to use one.
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1
Mount the device
e Click 330/331 mount on a DIN rail. To mount, simply hook the lip over the lower edge of the DIN rail,
and use a rocking motion to snap the module into place.
Note. Do not mount over the T-bus.
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