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