7
Instruction Leaflet
IL0131088EN
Effective May 2015
Series NRX with PXR - Instructions for
Spring Release, Latch Check Switch,
and Motor Operator
EATON
www.eaton.com
Section 6: Motor Operator General Infor-
mation
A motor operator is an electric motor assembly internally mounted in
the right-hand side of the circuit breaker (Figure 15). It charges the
closing springs electrically for remote or local operation. The motor
operator can be factory or field installed (Table 3 NF and Table 4 RF).
If a motor operator is being installed in the field, an optional spring
release device can also be installed. Instructions for the installation of
a spring release are provided in Section 2 of this document.
Figure 15.
Motor
Operator
Motor Operator Location.
Table 3. Motor Operator Ratings - NF.
Control Voltage
Frequency
Operational Voltage
(Range 85–110%)
Run Current
(Amperes)
Typ. Inrush Current
Power Consumed
(VA)
Max. Charge Time (sec)
24
DC
20 - 26
6
325%
160
4
48
DC
41 - 53
3
500%
150
3
60
DC
51 - 66
2
350%
150
4
110 - 127
50 - 60 Hz
94 - 140
2
300%
280
3
110 - 125
DC
94 - 138
1
500%
150
3
208 - 240
50 - 60 Hz
177 - 264
1
1000%
280
4
220 - 250
DC
187 - 275
1
1000%
280
4
Table 4. Motor Operator Ratings - RF.
Control Voltage
Frequency
Operational Voltage
(Range 85–110%)
Run Current
(Amperes)
Typ. Inrush Current
Power Consumed
(VA)
Max. Charge Time (sec)
24
DC
20 - 26
7
350%
200
6
48
DC
41 - 53
3
450%
175
6
60
DC
51 - 66
3
450%
225
6
110 - 127
50 - 60 Hz
94 - 140
3
300%
425
6
110 - 125
DC
94 - 138
2
375%
275
6
208 - 240
50 - 60 Hz
177 - 264
1.5
300%
400
6
220 - 250
DC
187 - 275
1
400%
250
6