Accessory Devices; Accessory Tray Devices; Left Accessory Tray; Right Accessory Tray - Eaton NRX Instruction Manual

15. The two-point blue plugs house two female crimp con-
tacts 67C3249, with the odd assigned numbers having
the coded rib feature on the blue plug.
16. For secondary contacts, odd numbers should be treat-
ed as positive voltage for any accessory. This will not
apply for AC ratings
Table 4. Customer wiring details.
Type of conductor Tension clamp
connection
Solid cross section 0.5 - 4 mm
(min - max)
Flexible cross section 0.5 - 4 mm
(min - max)
American wire gauge - 26 - 12 AWG
AWG (min - max)
Flexible cross-section with 0.5 - .2.5 mm
wire end ferrule with- (26 - 14 AWG)
out plastic sleeve - DIN
46228/1 (min - max)
Flexible cross-section with 0.5 - 1.5 mm
wire end ferrule with plas- (26 - 16 AWG)
tic sleeve - DIN 46228/4
(min - max)
Gauge to IEC 60947-1 A3

Accessory devices

A variety of accessory devices are available for use with
Series NRX circuit breakers. Unless otherwise stated, they
are all considered optional devices in the sense that they
are not provided as standard on a manually operated cir-
cuit breaker. Available accessories are discussed in general
terms. For more detailed information and/or installation
instructions, refer to individual instruction leaflets dedicated
to individual items.
Series NRX circuit breaker accessories are designed to be
field installed. The accessories fall into one of three catego-
ries:

Accessory tray devices

●
Other internal electrical devices
●
Mechanical devices
●
Accessory tray devices
Certain accessory devices are mounted in an accessory
tray. The tray is then installed in a left- or right-hand slot
located in the upper left- and right-hand sides of the circuit
breaker (Figure 31 and Figure 32).
Series NRX with PXR - type RF low voltage power (air) circuit breakers instruction manual MN013002ENH03 September 2016 www.eaton.com
Recommended strip
length or ferrule length
2 10 - 12 mm
(.39 - .47 in.)
2 10 - 12 mm
(.39 - .47 in.)
10 - 12 mm
(.39 - .47 in.)
2
10 - 12 mm
(.39 - .47 in.)
2
16 - 18 mm
(.63 - .71 in.)
-
Section 4: Circuit breaker features and accessories
Figure 31. Left accessory tray.
Figure 32. Right accessory tray.

Left accessory tray

The left accessory tray will accommodate a maximum of
four optional devices as follows:
One, or two shunt trips (ST);
●
One undervoltage release (UVR); or
●
Combination (one ST and one UVR); and
●
Two overcurrent trip switches (OTS).
●

Right accessory tray

The right accessory tray will accommodate up to six sets of
2a/2b auxiliary switch combinations.
19