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Section 1: Introduction
Series NRX with PXR – Type NF Low Voltage Power (Air) Circuit Breaker Instruction Manual MN013001EN May 2015 www.eaton.com
The circuit breaker can be identified by a 20-digit catalog number located on the name plate (Figure 2). The drawout cassette
can be identified by a 14-digit catalog number (Figure 2a). An overview of the Catalog number code is provided for refer-
ence.
Figure 2. Series NRX with PXR Catalog Numbering System. (Continued on Next Page.)
Basic Device Selection Overcurrent Protection Breaker Options
(Position 1-8) (Position 9-11) (Position 12-20)
Positions 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
Example N A S 6 1 6 3 W L N D A B A N 4 X N D X
(Continued on Next Page)
Position
9 & 10
Electronic Trip Unit
Selection
Protection ZSI + COMM ARMS
No Protection - Switch Disconnector
SW None
PXR20
LN High Load Alarm
Instantaneous Override
Breaker Health Summary
Standard CAM
Connection
Optional Modbus RTU
50/60Hz
LI ZSI --
LM LI ZSI W/Modbus --
2A LSI ZSI --
2B LSI ZSI W/Modbus --
2C LSIG+A ZSI --
2D LSIG+A ZSI --
2E LSIG+A ZSI ARMS
2F LSIG+A ZSI W/Modbus ARMS
PXR25
2P Advanced Protection
Monitoring features
CAM and Modbus RTU
Standard
50/60/400Hz capability
LSI ZSI W/Modbus --
2Q LSI ZSI W/Modbus ARMS
2R LSIG+A ZSI W/Modbus --
2S LSIG+A ZSI W/Modbus ARMS
2T LSI ZSI W/Modbus --
2V LSI ZSI W/Modbus ARMS
2W LSIG+A ZSI W/Modbus --
2X LSIG+A ZSI W/Modbus ARMS
Position 1 Breaker Frame Size
N Type NF 630 to 1600 A
Position 2 Standard, Mechanism, Device
Q UL 1066, Stored Energy, Power Breaker
Y UL 489, Stored Energy, Insulated case Breaker
G IEC 60947-2 Stored Energy, Air Breaker - Global
A IEC 60947-2, Stored Energy, Air Breaker - China
Position 3, 4 Fault Current Rating
S4 42 kA at 480 Vac UL or 415 Vac IEC
S5 65 kA at 480 Vac UL or 415 Vac IEC
S6 65 kA at 480 UL or 415 Vac IEC
Position 5, 6 Frame Rating (Amps)
07 630 (UEC Only)
08 800
10 1000 (UEC Only)
13 1250 (UEC Only)
16 1600 (On NF: IEC Only)
Position 7 Poles, Phasing
3 3-Pole, ABC
4 4-Pole, NABC
Position 8 Mounting Configuration
W Drawout
X Drawout – Optimized primary disconnects
Z Drawout , with 3 Form C Cell Switches
Y Drawout – Optimized primary disconnects, with 3 Form C
Cell Switches
B Fixed Mount Rear Connect, Mounting Bracket, with
Secondary Terminal
R Fixed Mount Rear Connect, Surface Mount, with Secondary
Terminal Row
T Fixed Mount Front Connect, Surface Mount, Cable Connect,
with Secondary Terminal Row
F Fixed Mount Front Connect, Mounting Bracket, Bus Connect,
with Secondary Terminal Row
S Fixed Mount Front Connect, Surface Mount, Bus Connect,
with Secondary Terminal Row
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