Accessories
4.8 Communication and system integration
3VA molded case circuit breakers with UL and IEC certification
Manual, 01/2019, L1V30435333-01
331
The COM800/COM100 breaker data server enables the integration of the 3VA UL molded
case circuit breakers in:
● Power monitoring software powermanager
● Industrial automation systems
● Building automation systems
● Parameterization and breaker condition evaluation via communication link
● Maintenance systems
The COM800/COM100 breaker data server together with the connected 3VA UL molded
case circuit breakers with the ETUs 5-series and 8-series provides the following information
about the power distribution system:
● Condition of the 3VA UL molded case circuit breaker
● Tripping history with time stamp, cause of trip and number of trip events for breakers with
ETUs 5-series and 8-series
● Minimum and maximum values of measured variables
● Limit-value monitoring for measured variables in the 3VA UL molded case circuit breakers
● Load curves with power demands, e.g. 15-minute demands
● Energy values such as active energy (kWh) and reactive energy (kvarh)
● Power supply to connected 3VA UL molded case circuit breakers
● Three simultaneous communication connections via the integrated Ethernet interface
Electronic trip units allow detailed setting of protection parameters from a central location.
They record measured variables and maintenance information in order to support power and
installation monitoring.
The electronic trip units (ETUs) provide the following protection functions:
● Overload protection L ("L" = Long time)
● Short-time delayed short-circuit release S ("S" = Short time) for time-selective response in
case of a short-circuit
● Instantaneous short-circuit release I ("I" = Instantaneous)
● Protection of the neutral conductor against overload and short-circuit ("N" = neutral)
● Protection from fault currents to ground ("G" = Ground fault).
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