Description
2.1 Overview - applications and portfolio
3WA1 air circuit breaker
24 Equipment Manual, 02/2023, 92310000002-06
• Wide range of versatile primary connectors
• Easy integration into power distribution equipment according to IEC 61439-2
• Replacement of the 3WL circuit breaker with minimum design and testing effort
• Optional expansion with a wide range of internal and external accessories
• Integrated and shared communication concept with the 3VA molded case circuit
breakers and the 7KM PAC measuring devices.
Option for direct integration into the Siemens communication environment via
optional accessories:
– Communications modules for PROFINET IO, Modbus TCP, Modbus RTU
– Digital input/output modules
– Graded metering functions for efficient energy management
• Integration of the circuit breakers into the Totally Integrated Power (TIP) and Totally
Integrated Automation (TIA) solutions
• Integration into the SENTRON software environment, such as SENTRON powerconfig
configuration software and powermanager
The 3WA air circuit breaker meets the following basic requirements:
• Highly competitive breaking capacity up to 690 V AC
• Very high breaking capacity at the rated voltages 1000 V AC and 1150 V AC
• Optimum selectivity
• Metering function with internal voltage tap
• Optional connection to a fieldbus communication system or Ethernet-based IP
communication system with up to 2 communications modules simultaneously
Product features
The main product features of the 3WA circuit breaker are:
• Compact dimensions
• Rated current range from 630 A to 6300 A
• Breaking capacity up to:
– 150 kA at 500 V AC
– 125 kA at 1000 V AC
• Available fixed-mounted and withdrawable versions
• ETU600 electronic trip unit with Bluetooth and USB-C interface, future-oriented with
upgradeable functional expansions
• Optional integrated metering function according to IEC 61557-12
• Internal voltage tap up to 1000 V AC
• Use in AC and DC applications
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