Eaton Series NRX Manual

Series NRX with PXR - instructions for
pop-out trip indicators
• WARNING
(1) ONLY QUALIFIED ELECTRICAL PERSONNEL SHOULD BE PERMITTED TO WORK
ON THE EQUIPMENT.
(2) ALWAYS DE-ENERGIZE PRIMARY AND SECONDARY CIRCUITS IF A CIRCUIT
BREAKER CANNOT BE REMOVED TO A SAFE WORK LOCATION.
(3) DRAWOUT CIRCUIT BREAKERS SHOULD BE LEVERED (RACKED) OUT TO THE
DISCONNECT POSITION.
(4) ALL CIRCUIT BREAKERS SHOULD BE SWITCHED TO THE OFF POSITION AND
MECHANISM SPRINGS DISCHARGED.
FAILURE TO FOLLOW THESE STEPS FOR ALL PROCEDURES DESCRIBED IN THIS
INSTRUCTION LEAFLET COULD RESULT IN DEATH, BODILY INJURY, OR PROPERTY
DAMAGE.
• WARNING
THE INSTRUCTIONS CONTAINED IN THIS IL AND ON PRODUCT LABELS HAVE TO
BE FOLLOWED. OBSERVE THE FIVE SAFETY RULES:
– DISCONNECTING
– ENSURE THAT DEVICES CANNOT BE ACCIDENTALLY RESTARTED
– VERIFY ISOLATION FROM THE SUPPLY
– EARTHING AND SHORT-CIRCUITING
– COVERING OR PROVIDING BARRIERS TO
ADJACENT LIVE PARTS
DISCONNECT THE EQUIPMENT FROM THE SUPPLY. USE ONLY AUTHORIZED
SPARE PARTS IN THE REPAIR OF THE EQUIPMENT. THE SPECIFIED MAINTENANCE
INTERVALS AS WELL AS THE INSTRUCTIONS FOR REPAIR AND EXCHANGE MUST
BE STRICTLY ADHERED TO PREVENT INJURY TO PERSONNEL AND DAMAGE TO
THE SWITCHBOARD.
Effective May 2016 Series NRXInstruction Leaet IL0131126EN
Instructions apply to:
UL489 Series NRX RF Frame
IEC IZMX40

2
Series NRX with PXR - instructions for
pop-out trip indicators
EATON www.eaton.com
Instruction Leaet IL0131126EN
Effective May 2016
Section 1: General information
The optional pop-out mechanical trip indicator, located to the right of
the trip unit on the breaker’s front faceplate, operates by releasing and
popping out any time the breaker trips due to an overcurrent condition
(Figure 1). Three versions of the pop-out trip indicator are available:
Version 1: The non-interlocking indicator will not prevent the breaker
from being reclosed. The indicator is reset manually by pushing it back
in.
Version 2: The interlocking pop-out indicator must be pushed in and
reset before the breaker can be reclosed.
Version 3: The remote reset interlocking pop-out indicator may be
reset manually or remotely.
When resetting any version, ensure that the button is fully reset to a
hard stop.
An optional overcurrent trip switch (bell alarm) can be used in
conjunction with either mechanical trip indicator. The overcurrent trip
switch operates off the position of the mechanical trip indicator, and is
reset when the indicator is reset.
Figure 1. Installed pop-out trip indicator shown.
Become familiar with the pop-out trip indicator being used. Figure 2
illustrates the non-interlocking indicator version and Figure 3 illustrates
the interlocking indicator version. Both indicators look very similar
externally. The only noticeable difference between the two is a small
molded hook-shaped device on the interlocking indicator version. This
hook operates the interlocking feature. Both indicators are, however,
installed and removed in the same way.
Figure 2. Non-interlocking pop-out trip indicator shown.
Figure 3. Interlocking pop-out trip indicator shown.
Red plunger
Red plunger
Hook-shaped
interlock

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Instruction Leaet IL0131126EN
Effective May 2016
Series NRX with PXR - instructions for
pop-out trip indicators
EATON www.eaton.com
Figure 4.
Red plunger
Remote reset interlock indicator shown.
Section 2: Installation of pop-out trip
indicator
Proceed with the following nine steps.
Step 1: Remove the four screws holding the front cover in place (two
on each side of the cover).
Figure 5. Step 1.
Step 2: Remove the front cover. Pull down on the charging handle to
simplify removal.
Figure 6. Step 2.
Step 3: Remove the plug in the breaker cover. This will allow the red
plunger to pass through the cover.
Figure 7.
Plug
Step 3.
Step 4: Slide the left accessory tray (used for mounting accessories
such as ST, UVR, and OTS) approximately 1 in. (25.4mm) to the left
by depressing the thumb tab and sliding the tray out. This will create
sufficient room to install the trip indicator.
Table 1. Remote reset ratings
Control voltage Frequency Operational voltage (range 70–110%) Inrush power consumption (VA) Reset closing time (ms)
24 DC 17–26 500 25
110–127 50–60 Hz 77–140 540 25
110–125 DC 77–138 540 25
208–240 50–60 Hz 146–264 500 25
220–250 DC 154–275 515 25

4
Series NRX with PXR - instructions for
pop-out trip indicators
EATON www.eaton.com
Instruction Leaet IL0131126EN
Effective May 2016
Figure 8. Step 4.
Step 5: Locate and identify the mounting slot in the side plate where
the indicator will be mounted. The indicator will slide down the slot
and snap into place when the notch is reached near the end of
the slot.
Figure 9.
Mounting slot with notch
in side plate
Step 5.
Step 6: Position the pop-out indicator at the top of the slot and slide
it down the mounting slot. If it is advantageous, a small flat-blade
screwdriver can be used on the body of the indicator to push it down
the mounting slot.
Figure 10.
Indicator is shown half
way down the slot and
approaching the notch.
Step 6.
Step 7: After the indicator is in the mounting slot, push the indicator
toward the load end of the breaker into the notch. The indicator will
snap into its mounted position in the notch. A click sound will be
heard indicating a successful installation. The installed pop-out indicator
will appear as shown. Tighten the captive mounting screw. Torque to
1-2 in.-lbs (0.11-2.11 N•m).
Figure 11.
Indicator shown mounted
(view from left side)
Indicator shown mounted
(view from right side)
Captive
Mounting Screw
Step 7.
Step 8: Slide the left accessory tray, partially removed previously in
Step 4 of Section 2, back into place.
Step 9: Replace the front cover, and secure it in place with the four
mounting screws previously removed in Step 1.
•CAUTION
WHEN REPLACING THE FRONT COVER, ENSURE THAT THE HOLE IN THE
FRONT COVER IS ALIGNED WITH THE TRIP INDICATOR BUTTON. FAILURE
TO DO SO COULD RESULT IN DAMAGE TO THE INDICATOR AND/OR FAULTY
OPERATION OF THE INDICATOR.

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Instruction Leaet IL0131126EN
Effective May 2016
Series NRX with PXR - instructions for
pop-out trip indicators
EATON www.eaton.com
Section 3: Removal of pop-out trip indicator
Proceed with the following eight steps.
Step 1: If necessary, remove the front cover from the breaker by
performing Steps 1 and 2 of Section 2.
Step 2: Locate the trip indicator mounted in the side plate.
Figure 12.
Mounted trip
indicator
Trip indicator captive
mounting screw
Step 2.
Step 3: Partially slide out the left accessory tray approximately 1 in.
(25.4mm). The secondary wires do not need to be disconnected. This
step is necessary to avoid any interference with accessory devices,
particularly overcurrent trip switches (bell alarms), in the left accessory
tray during the removal of the pop-out trip indicator.
Figure 13. Step 3.
Step 4: Loosen the captive mounting screw (see Figure 12).
Step 5: Note the small locking tab (see Figure 14) that locks the pop-
out indicator into its mounted position in the mounting notch in the
side plate.
Figure 14.
Mounting notch in
side plate
Step 5.
Step 6: It is recommended that Step 7 be read and understood
before performing Step 6, since both steps are performed in a nearly
simultaneous manner. Removal of the indicator at this point can be
simplified through the use of a small screwdriver. First push the
indicator’s locking tab toward the rear of the breaker with a screwdriver
as shown. This will unlock the indicator from its mounted position.
Hold the locking tab in this release position with the screwdriver.
Figure 15.
Locking tab
Step 6.
Step 7: While holding the locking tab in the pushed back (unlocked)
position just described in Step 6, pry the trip indicator up along the
angled slot. The body of the trip indicator is accessed from the other
side of the side plate as shown.

6
Series NRX with PXR - instructions for
pop-out trip indicators
EATON www.eaton.com
Instruction Leaet IL0131126EN
Effective May 2016
Figure 16. Step 7.
Step 8: Once the trip indicator is released from its mounting notch,
the trip indicator can be completely removed by pushing it up and out
of the mounting slot.
Step 9: To install a new pop-out trip indicator, follow Steps 3 through 9
of Section 2.
Section 4: Accessory secondary
connections
•CAUTION
IDENTIFICATION WIRE NUMBERS MUST MATCH THE IDENTIFICATION
NUMBERS ON THE SECONDARY BLOCK/PLATE.
General information
1. Some electrical accessory leads are tagged with numbers associated
with the applicable connection diagram located in instruction book
TD013001EN. Leads are also supplied with keyed secondary
connector plugs to ensure proper connections (Figure 17). If the trip
indicator leads are not labeled, pre-printed labels are provided in the
trip indicator kit.
2. Secondary connections are made by plugging the connector plugs
into the appropriate location with a matching number label. A
connector plug already connected can be removed by squeezing
two release tabs together with small needle nose pliers and pulling
out (Figure 17).
Figure 17. Leads and connectors.
Figure 18. Connector plug removal.
Fixed breaker connections
Proceed with the following five steps:
Step 1: Become familiar with the fixed terminal block DIN rail type
mounting plate where secondary connections are made.
ote:N Secondary connection points have numerical and descriptive laser-etched
identifications.
Tagged
leads
Keyed
connector
Release
tabs

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Instruction Leaet IL0131126EN
Effective May 2016
Series NRX with PXR - instructions for
pop-out trip indicators
EATON www.eaton.com
Figure 19. Step 1.
Step 2: Plug the accessory connector plug into the fixed secondary
terminal block.
Figure 20. Step 2.
Step 3: Identify the correct mounting location on the fixed terminal
block mounting plate for mounting the fixed secondary terminal block.
Insert the bottom end of the fixed secondary terminal block into the
proper location on the DIN rail type mounting plate.
Figure 21. Step 3
Step 4: Rotate the top end of the terminal block in until it engages the
appropriate flexible mounting tab at the top of the mounting plate with
a clicking sound.
Figure 22. Step 4.
2
1
13
14
14
13
•IMPORTANT
TO REMOVE RIGHT AND LEFT ACCESSORY TRAYS OR ANY OTHER
ELECTRICAL ACCESSORY, THE APPROPRIATE ACCESSORY CONNECTOR PLUG
MUST FIRST BE DISCONNECTED.
Step 5: To remove an accessory plug on a fixed circuit breaker, the
appropriate fixed secondary terminal block must first be removed. To
remove a fixed secondary terminal block, lift up on the small flexible
mounting tab at the top of the fixed terminal block mounting plate, and
rotate the terminal block out in the opposite direction shown in step 4.
Once the terminal block is removed, the accessory connecter plug can
be unplugged from the bottom of the terminal block. Refer to Item 2
and Figure 18 under the heading “General Information” in Section 4 for
detailed assistance with the removal.
Drawout breaker connections
Proceed with the following three steps.
Step 1: Become familiar with the drawout secondary plug housing
where secondary connections are made.
ote:N Secondary connection points have numerical and descriptive laser-etched
identifications on top of the housing directly matching the plug-in locations
below.
Figure 23. Step 1 (RF frame shown).
Step 2: Plug accessory connector plug into position in the secondary
plug housing matching the laser-etched identification on top of the
housing.
ST1
1
2
ST2
UV1
3
4
UV2
OT1C
5
6
OT1M
OT1B
7
8
OT2B
OT2C
9
10
OT2M
N1
11
12
N2 ALM1
ALM2
15
16
ALM3
G1
17
18
G2
+24V
19
20
AGND
ZIN
21
22
ARMSIN
ZCOM
23
24
ZOUT
CMM1
25
26
CMM2
CMM3
27
28
CMM4 PTVB PTVN RR2 RR1
PTVC
MODBA
33
34
MODBB
35
36
37
38
39
40
2CMM2 MODBG
2CMM3 2CMM1
41
42
2CMM4 ARCON1
ARCON2
ARCON3
43
44
45
46
PTVA
29
30 32
31
ALMC
13
14
47
48
+
-
+
-

8
Series NRX with PXR - instructions for
pop-out trip indicators
EATON www.eaton.com
Instruction Leaet IL0131126EN
Effective May 2016
Figure 24. Step 2.
•IMPORTANT
TO REMOVE RIGHT AND LEFT ACCESSORY TRAYS OR ANY OTHER
ELECTRICAL ACCESSORY, THE APPROPRIATE ACCESSORY CONNECTOR PLUG
MUST FIRST BE DISCONNECTED.
Step 3: To remove an accessory connector plug on a drawout circuit
breaker, unplug it from its secondary plug housing. Refer to Item 2
and Figure 18 under the heading “General information” in this section
for detailed assistance with the removal.
1
2

9
Instruction Leaet IL0131126EN
Effective May 2016
Series NRX with PXR - instructions for
pop-out trip indicators
EATON www.eaton.com
ote:N

10
Series NRX with PXR - instructions for
pop-out trip indicators
EATON www.eaton.com
Instruction Leaet IL0131126EN
Effective May 2016
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Printed in USA
Publication No. IL0131126EN/TBG001301
Part No: IL0131126ENH01
May 2016
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liability
The information, recommendations, descriptions, and safety notations
in this document are based on Eaton Corporation’s (“Eaton”)
experience and judgment, and may not cover all contingencies.
If further information is required, an Eaton sales office should be
consulted.
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THAN THOSE SPECIFICALLY SET OUT IN ANY EXISTING CONTRACT
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SHALL NOT BECOME PART OF OR MODIFY ANY CONTRACT
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herein.
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