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7 Auxiliary wiring terminals
7.1 Interface module
PXR Electronic trip unit
01/21 MN012005EN
www.eaton.com
41
7 Auxiliary wiring terminals
7.1 Interface module
Table 20: Presence and installation of the interface module
The interface module offers various connections and functions.
The number of connections varies depending on the version of the module.
Please note that for all circuit breakers with PXR technology, the appropriate
modules must be installed, otherwise the full range of circuit-breaker
functions cannot be used. The circuit breakers for which each module can
be used are outlined in the data sheet of the respective interface module,
as well as on the relevant catalogue page (in the form of an overview).
The interface module has the following functions and connections, which are
illustrated below using three versions as examples:
Figure 10: Functions and connections
a
24 V DC terminal (±10 %)
b
Detection of the breaker status (I, +, O)
c
Connection to the trip unit
d
CAM connection
e
Connection to the internal communication module
f
ARMS remote switching (only on the NZM3 and the NZM4)
g
ZSI connection
h
VN connection for the voltage tap of the neutral conductor (only on the NZM4)
i
Status indication of the remote operator
Trip unit
NZM2(3)(4)-XBSM… interface module
PXR10
the interface module cannot be installed!
PXR20
installation is optional
PXR25
included as standard
⑧
②
①
⑦
③
④
⑥
⑤
②
①
③
④
⑤
②
①
③
i
i
i