Section 2: Installation Of Undervoltage Release And/Or Shunt Trip In Left Accessory Tray - Eaton NRX Series Installation And Removal Instructions

Installation and removal instructions for Series NRX
undervoltage release, shunt trip, and overcurrent
trip switch in left accessory tray
Table 1. Shunt trip ratings
Operational
Control voltage
voltage Frequency (range 70–110%)
24 DC 17–26
48 DC 34–53
60 DC 42-66
110–127 50–60 Hz 77–140
110–125 DC 77–138
208–240 50–60 Hz 146–264
220–250 DC 154–275
Table 2. Undervoltage release ratings
Operational
voltage
Control (range
voltage Frequency (85–110%)
24 DC 20–26
32 DC 27–35
48 DC 41–53
60 DC 51-66
110–127 50–60 Hz 94–140
110–125 DC 94–138
208–240 50–60 Hz 177–264
220–250 DC 187–275
380–415 AC 323–457
480 AC 408–528
600 AC 510–660
Table 3. Overcurrent trip switch ratings
Control
voltage Frequency
250 50–60 Hz
125 DC
250 DC
Inrush/
continuous
power Opening
consumption (VA) time (ms)
400/2 25
500/3 25
500/4 25
800/8 25
800/8 25
850/8 25
850/8 25
Dropout Inrush/
voltage continuous
range power Opening
(35–60%) consumption (VA) time (ms)
8–14 425/2 50
11–19 N/A 50
17–29 750/3 50
21-36 825/4 50
44–66 1150/8 50
44–66 1150/8 50
84–125 1200/8 50
88–132 1200/8 50
145–228 N/A 50
168–288 N/A 50
210–360 N/A 50
Contact
rating (amperes)
10
0.5
0.25
Instruction Leaflet IL01301008E
Section 2: Installation of undervoltage
release and/or shunt trip in left
accessory tray
Proceed with the following 13 steps.
Step 1e: Remove the four screws holding the front cover in place
(two on each side of the cover).
Figure 4. Step 1 (NF frame shown)
Step 2e: Remove the front cover. Pull down on the charging handle to
simplify removal.
Figure 5. Step 2 (NF frame shown)
Effective June 2015
EATON www.eaton.com
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