System Description; The 3Wa Air Circuit Breaker; The Cubiclebus² Bus System - Siemens SENTRON 3WA System Manual

System description

2.1

The 3WA air circuit breaker

The 3WA circuit breaker is the new generation of air circuit breakers in the Siemens AG
portfolio. It is based on the proven and robust design of its predecessor 3WL. The technical
data of the 3WA circuit breaker mechanics and the portfolio have been extended as
compared with 3WL, and the electronic components have been completely redeveloped.
The 3WA circuit breaker is part of the product family of SENTRON protection, switching,
measuring and monitoring devices and covers applications in the rated current range from
630 A to 6300 A.
You can find detailed information on the 3WA circuit breaker in the Equipment Manual; see
Chapter Reference documents (Page 5).
2.2 The CubicleBUS² bus system
The CubicleBUS² is a closed bus system and allows communication between the 3WA circuit
breaker with ETU600 electronic trip unit and internal and external modules located in the
circuit breaker panel.
The following data can be transmitted via the CubicleBUS²:
• Metering values
• Maintenance information
• Statuses
• Events and parameters of the circuit breaker
• Firmware update
You can find the technical specifications of the CubicleBUS² in the 3WA Equipment Manual
3WA; see Chapter Reference documents (Page 5).
CubicleBUS nodes
2
The following CubicleBUS
• Internal status sensors
The Breaker Status Sensor BSS200 is used for status acquisition.
• Communication interfaces:
– Bluetooth and USB-C interface TUI600
– PROFINET IO/Modbus TCP module COM190, see Chapter COM190 communication
• IOM230 digital input/output module
3WA Air Circuit Breaker Communication
System Manual, 11/2021, 92310000004-02
devices are available for the 3WA circuit breaker.
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module (Page 13)
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