23
Instructional Book
MN01301003E
Effective July 2011
Series NRX Low Voltage Power (Air)
Circuit Breakers User Manual
EATON CORPORATION
www.eaton.com
Table 5. Customer Wiring Details
Type of connection
Tension clamp connection
Blade size
0.6 x 3.5 mm
Clamping range, rated connection, max.
4 mm
2
Conductor cross-section, solid, min
0.5 mm
2
Conductor cross-section, flexible, max.
4 mm
2
Conductor cross-section, flexible plus plastic collar DIN
46228/1, rated connection, min.
0.5 mm
2
Cross-section for connected conductor, finely stranded with
wire-end ferrules and plastic collars DIN 46228/4, rated
connection, min.
0.5 mm
2
Conductor connection cross-section AWG, min.
AWG 30
Stripping length
10 mm
Connection direction
top
Clamping range, rated connection, min.
0.05 mm
2
Gauge to IEC 60947-1
A3
Conductor cross-section, solid, max.
4 mm
2
Conductor cross-section, flexible, min.
0.5 mm
2
Conductor cross-section, flexible plus plastic collar DIN
46228/1, rated connection, max.
2.5 mm
2
Conductor cross-section, flexible AEH plus plastic collar DIN
46228/4, rated connection, max.
2.5 mm
2
Conductor connection cross-section AWG, max.
AWG 12
10. The two-point black plugs house two female crimp contacts
(Weidmuller crimp Style 73477FCB01), with the odd assigned
numbers having the coded rib feature on the black plug
(Fig-
ure 28). Note that the connector plug must be oriented as
shown in Figure 28 before making the connection.
General wiring notes
1
. Each contact block on the Secondary Terminal Block consists of two
contacts (
Figure 27
). A possible 46 terminal blocks will provide 92
contact points for the type RF frame.
Fixed
Terminal Block
Drawout
Terminal Block
Figure 27. Secondary Terminal Blocks
2. Drawout circuit breakers use Style 66B2508G01 contact blocks
that mount onto a metal DIN rail.
3. Fixed mounted circuit breakers use Style 66B2510G01 contact
blocks that mount onto an insulated support frame. The custom-
er tension connectors are at a 45° angle.
4. Customer wiring is done using a tension clamp termination on
each contact.
5. Contact blocks are individually mounted and hence contact
positions may be empty depending on accessories and options
ordered.
6. For drawout configurations, a cross connector can be used to tie
adjacent contacts together. It is Weidmuller Style ZQV4 (300V
rated only).
7. The tension clamp terminals will support solid or flexible conduc-
tors, #12/4mm
2
through #24/2.5mm
2
AWG and are UL/CSA rated
for 600V, 10A.
8. The recommended wire strip length is 10mm (.394”).
9. The tension clamp terminals also support finely stranded con-
ductors with wire-end ferrules and plastic collars DIN 46228/4,
rated connection.
