Yes, the portfolio for the UL market is made for global makers in the following ways:

• The entire SENTRON 3WA air circuit breaker portfolio (3WA1, 3WA2, 3WA3) is based on a consistent system.
• The SENTRON 3WA air circuit breaker meets the requirements of UL 1066 and IEC 60947-2 and can therefore be used worldwide. This is particularly advantageous for switchgear manufacturers or OEMs who create systems for both standard areas.
• The SENTRON 3WA2 series is designed exclusively for the UL 489 market.

Benefits for global manufacturers:

• Transparent power data can improve energy efficiency drastically
• Lower penalty payments for grid operators in the event of electricity outages
• Robust air circuit breakers (ACBs) can withstand voltage fluctuations, minimizing the risk of system faults
• Wire planning at the push of a button with the graphical SENTRON 3WA Configurator
• A combination of robust mechanics, automated diagnostics and web-based upgrades increase the real service life of the circuit breaker, if properly maintained, to potentially as long as 30 years – a huge reduction in system life-cycle costs
• Easy and cost-effective integration of SENTRON 3WA air circuit breakers into switchgear if a SENTRON 3WL air circuit breaker is already installed

• Further development of the proven, extremely robust SENTRON 3WL air circuit breakers
• Special versions (high short-circuit breaking capacity at high voltages): up to 125 kA at 1,000 V
• Wide range of accessories for a maximum service life of the SENTRON 3WA air circuit breaker
• Development and manufacturing of all devices in accordance with a certified quality management system compliant with DIN EN ISO 9001:2015
• User-friendly operation of electronic trip unit ETU600 via rotary switch, display or remote parameterization
• Consistent, end-to-end portfolio since 2001 thanks to the SENTRON 3WL and SENTRON 3WA air circuit breakers having the same dimensions and connection points
• Consistent, end-to-end circuit breaker portfolio up to 1,150 V AC
• Three sizes with rated currents of 630 A to 6,300 A for AC applications
• Frame size up to 4,000 A for DC applications
• High breaking capacity Icu from 55 kA to 150 kA at 500 V AC
• Simple extension of functions, thanks to uniform accessories for all frame sizes
• Two electronic trip units that cover all requirements

• Accessories can be retrofitted on site at any time
• ETU functions extendable by means of on-site upgrades (ETU600)
• COM190 PROFINET-IO/Modbus TCP module for connection to higher-level management systems; designed as a combination module to use multiple protocols simultaneously (Modbus TCP and PROFINET)
• Switched Ethernet functionality for optimized architecture, engineering, and redundancy while maintaining highest performance

Learn more in our infographic: Connection to higher level management systems

Long-term reliability and intelligent maintenance concepts

• You can carry out a simple annual inspection by yourself
• You can replace parts as needed by yourself (no Siemens personnel required)
• Under particular environmental conditions, inspections are required only once every four years
• Automatic self-monitoring of functioning of the SENTRON 3WA air circuit breaker
• Condition monitoring with ETU600
• Cybersecurity functions for secure communication

More sustainable power distribution

• Reduced resource use through digital documentation via ID Link, significantly lowering paper consumption compared to the predecessor SENTRON 3WL.
• High durability with up to 30,000 operating cycles, supporting long-term use and reducing lifecycle material demand.
• Energy-efficient operation thanks to low temperature derating and integrated energy data acquisition, enabling optimization in line with ISO 50001.
• Modular, repairable design with easy maintenance and widely available spare parts to minimize waste and extend service life.
• Future‑proof upgradability, reducing the need for hardware replacement as requirements evolve.
• Availability of an EPD type II with full life‑cycle impact assessment, offering transparency on environmental performance and product carbon footprint.

Further information in our white paper: Intelligent maintenance concepts

• Reactive maintenance is risky due to unplanned downtime, while preventive care is often inefficient.
• Condition-based maintenance is the superior strategy, using real-time component health to drive repairs only when truly necessary.
• Intelligent condition monitoring with the SENTRON 3WA allows for precise maintenance planning and prevents unplanned outages.
• The circuit breaker is equipped with various sensors that continuously monitor and control various wear effects.
• The core elements are the health indicator and a remaining service life forecast.
• The information can be viewed on either the integrated display or an externally connected display.
• Maintenance decisions are based on precise data rather than assumptions, optimizing availability at reduced costs.

Further information in our flyer: Condition monitoring with SENTRON 3WA circuit breakers