Section 6: Accessory Secondary Connections - Eaton NRX Series Installation And Removal Instructions

Instruction Leaflet IL01301008E
Effective June 2015

Section 6: Accessory secondary connections

m CAUTION
BECOME FAMILIAR WITH THIS CAUTION ON POLARITY BEFORE
PROCEEDING. FAILURE TO APPLY THE CORRECT POLARITY WILL
RESULT IN DAMAGE TO THE DEVICE.
1
ST
2
3
UVR
4
When connecting a 24 Vdc shunt trip or a 24 Vdc undervoltage
release, be certain to apply positive (+) voltage to either secondary
terminal 1 (ST) or secondary terminal 3 (UVR).
General information
1. Electrical accessory leads are tagged with numbers associated
with the applicable connection diagram located in technical
document TD01301014E. Leads are also supplied with keyed
secondary connector plugs to ensure proper connections
(Figure 36).
2. Secondary connections are made by plugging the connector
plugs into the appropriate location. A connector plug already
connected can be removed by squeezing two release tabs
together with small needle-nose pliers and pulling out
(Figure 37).
Tagged leads
Figure 36. Leads and connectors
Figure 37. Connector plug removal
10
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DC Pos. (+)
DC Neg. (–)
DC Pos. (+)
DC Neg. (–)
Keyed connector
Release tabs
Installation and removal instructions for Series NRX
undervoltage release, shunt trip, and overcurrent
trip switch in left accessory tray
Fixed breaker connections
Proceed with the following five steps:
Step 1e: Become familiar with the fixed terminal block DIN rail type
mounting plate where secondary connections are made.
N otee: Secondary connection points have numerical and descriptive laser-
etched identifications.
Figure 38. Step 1
Step 2e: Plug accessory connector plug into fixed secondary
terminal block.
Figure 39. Step 2
Step 3e: Identify correct mounting location on fixed terminal block
mounting plate for mounting fixed secondary terminal block. First
insert the bottom end of the fixed secondary terminal block into the
proper location on the DIN rail type mounting plate.
Figure 40. Step 3
Fixed secondary terminal block
Flexible mounting tabs