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Unlike the position signaling switch PSS, whose signals are available at the auxiliary
conductor terminal system (see Section Auxiliary, alarm, and signaling switches (Page 100)),
the position signaling switch COM PSS only signals two different states:
• INSERTED breaker position (circuit breaker in the CONNECT position)
• ISOLATED breaker position (circuit breaker in the TEST or DISCON position)
Breaker Connect module, external power supply
Via the Breaker Connect module, the electronic trip units (3- and 6-series) and the
communication modules can be supplied with power externally at the auxiliary terminal block
(auxiliary power supply).
Note
To provide the functionality of the circuit breaker as a protective device, the ETU is powered via
an internal transformer in the operating state when the main contacts are closed. When the
contacts are open, the ETU can optionally be powered via the metering function MF Advanced
and the internal voltage tap.
The Breaker Connect module can be installed on the terminal strip of the circuit breaker and
permits installation of communication modules in the ETUs of the 6-series. In this way, the
module establishes connectivity of the circuit breaker with a communication environment.
As a further functionality, it enables the internal circuit beaker bus (CB bus) at terminals CB1
and CB2 to be brought out and an external I/O module (IOM300) to be connected to any ETU,
which can then be configured via a test device (TD410/420).
Depending on the auxiliary voltage used, the following versions can be used:
• External power supply 110 to 240 V AC/DC
• External power supply 24 to 48 V DC
The Breaker Connect module is supplied as standard if the circuit breaker is configured for
communication.
Communications modules
The circuit breakers utilize an innovative, modern communication concept.
The basis for this concept is the communication-capable trip unit of the ETUs of the 6-series,
the metering function, and the different communications modules.
The terminal strip provides space for two communications modules. It is thus possible to
transmit data simultaneously to two different communication networks or communicate
redundantly on one network. The following communications modules are available for this:
Technical specifi‐
cations
ETU 660
COM 040
(PROFIBUS DP)
3VA27 molded case circuit breakers & 3WL10 air circuit breakers
Equipment Manual, 10/2023, L1V30499596002-03
3.3 Accessories for communication link, remote switching, and I/O modules
Current
Making cur‐
[mA]
rent
[A]
109
8
52
1
Peak length
Power loss
[ms]
at 24V [W]
< 1
3
< 1
2
Accessories
Comment
107
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