Figure2A. Series Nrx Type Rf-Frame Cassette Catalog Numbering System - Eaton NRX Series User Manual

Instructional Book
Effective July 2011
Position 1-2 Cassette Family and Breaker Frame
RE IEC RF-Frame
Position 3-4 Continuous Ampere Range
40 RF-Frame 2000-4000A
Position 5 Poles, Phasing (Facing Front of Breaker)
3 Three-pole ABC
4 Four-pole NABC
Position 6 Load Terminal Connections
N Flat tapped pads only (no terminal adapters)
F Flat bar front, except 4000A
V Vertical
H Horizontal
Position 7 Arc Hood
A Arc hood installed (default)
Position 8 Door Frame Gasket and Rejection Kits
B Door kit included (default), with rejection kit
D Door kit included, no rejection kit
R Not included, with rejection kit
N Not included, no rejection kit
Figure 2a. Series NRX Type RF - Frame Cassette Catalog Numbering System
Breaker Overview
Figures 3-6 highlight the main components that make up a Series
NRX breaker.
Drawout breaker and cassette
A drawout circuit breaker is used in combination with a drawout
cassette (Figures 3 and 4). Mounted on the drawout breaker are the
primary finger clusters and levering mechanism. These components
are located on the breaker to allow users easy access when
performing product inspection or maintenance. The cassette provides
all the necessary drawout circuit breaker interfaces, including primary
and secondary connections. Standard flat terminal pads on the rear of
the cassette provide for a variety of primary connection configurations.
Optional primary adapters are available for front and rear bus or cable
connections. For specific details and mounting instructions for primary
adapters, refer to IL01301053E.
8 EATON CORPORATION www.eaton.com
MN01301003E
RF Cassette Catalog Numbering System
1 2 3 4
Positions
5 6 7 8 9 10
Position 9 TOC Switches (Truck Operated Cell)
N Not included (default)
Position 10 Shutters
N Not included (default)
S Included
Position 11 Secondary Contact Terminals Installed
N None
B Defined by breaker
F Full complement
C Common options when cassette ships alone
Position 12 Future Use
N None
Position 13 Future Use
N None
Position 14 Cassette Shipping
C Cassette only
B Breaker shipped in cassette
Refer to Section 5 for mounting and installation dimensional
information. Electronic files of dimensional drawings for customer use
are available for download at www.eaton.com/seriesnrx.
Fixed circuit breaker
A fixed circuit breaker is rigidly mounted in its structure with no
drawout feature. The circuit breaker is available in front and rear-
connected configurations (Figure 5).
The breaker can be mounted on a suitable horizontal mounting surface
using left and right-side mounting feet. A standard fixed circuit breaker
is supplied with flat primary terminal pads on the rear of the breaker
that will accommodate a variety of primary connection configurations.
Series NRX Low Voltage Power (Air)
Circuit Breakers User Manual
11 12 13 14