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Air circuit breaker SENTRON 3WA

Air circuit breaker SENTRON 3WA include
  • Air circuit breakers
  • Various sizes up to 6300
  • Digital protection and control technology
  • Communication-capable solutions
  • Certification according IEC 60947-2 and UL 1066
  • Condition monitoring
  • Industrial plants
  • Building technology
  • Power distribution in infrastructures
  • Critical applications with high safety requirements
  • Overload and short circuit
  • Ground faults
  • Electrical networks and systems in accordance with IEC 60947-2
  • Maximum operational safety
  • Future-proof digitalization and communication
  • More sustainability (Siemens EcoTech label)
  • Energy and cost efficiency

Makers watch out: circuit breaker SENTRON 3WA

Quality awareness. Efficiency demands. Future enthusiasm. Sustainability. System orientation. Whatever drives you – the SENTRON 3WA air circuit breaker becomes the central component of your switchgear. Discover how it supports you reliably and sustainably in every situation.

Trust the tried-and-tested SENTRON air circuit breakers

Equipped with the rock-solid circuit breaker SENTRON 3WA, you can deliver the reliable protection that is generally expected in power distribution.

The basis for proven SENTRON quality

With the air circuit breaker SENTRON 3WA and the SENTRON portfolio, we provide a comprehensive product offering that meets all requirements and is flexible enough for any application. Extensive and modular accessories enable simple function expansions. The long service life and low maintenance requirements of all components offer you long-term reliability.

Consistent portfolio
  • 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 
  • One 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 also 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
  • ou can carry out a simple annual inspection by yourself 
  • Replacement of wear parts can be performed as needed by the customer alone (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

The SENTRON 3WA circuit breaker stands out with its modular design and exceptional durability, offering up to 30,000 switching cycles.

With easy maintenance, retrofit capability, and an energy-efficient design, it helps conserve resources and supports sustainable power distribution.

The basis for higher efficiency in switchgear

The circuit breaker SENTRON 3WA offers enhanced protective functions and high selectivity for maximum system availability. Its robust mechanics and unbeatable product quality have proven themselves even in demanding heavy-duty applications. Using the air circuit breaker SENTRON 3WA in the switchgear paves the way for an efficient retrofit of the air circuit breaker SENTRON 3WL.

Optimal selectivity
  • Perfectly coordinated selectivity values and protective functions for SENTRON air circuit breakers (ACBs) and downstream protective devices like SENTRON molded case circuit breakers assure total selectivity in cases of both overload and short circuit (the system component directly affected is safely shut down) 
  • Enhanced protective function: better protection of equipment (e.g. transformer) thanks to the detection of short-circuits when the direction of energy flow changes 
  • Dangerous discharge currents are recognized thanks to optimized ground-fault protection functions
  • Further development of the proven, extremely robust design of the previous model, the air circuit breaker SENTRON 3WL 
  • Special versions (high short-circuit breaking capacity at high voltages): up to 125 kA at 1,000 V 
  • Accessories designed for the maximum service life of the air circuit breaker (ACB) 
  • The air circuit breaker SENTRON 3WA is developed and manufactured in accordance with a certified quality management system complying with DIN EN ISO 9001:2008 
  • User-friendly operation of electronic trip unit ETU600 via rotary switch, display, or remote parameterization
  • Easy integration of the air circuit breaker SENTRON 3WA in switchgear with no need for additional testing if the air circuit breaker SENTRON 3WL is already integrated in the switchgear design 
  • Easy to replace in existing switchgear: the air circuit breaker SENTRON 3WL can be replaced by the SENTRON 3WA with no need for additional testing as per IEC 61439 if the new circuit breaker is operated under the same technical conditions as the previous version 
  • Type testing as per IEC 61439 required only if new technical opportunities offered by the SENTRON 3WA version are used (e.g. higher breaking capacities) 
  • Possibility of installing the circuit breaker SENTRON 3WA in an existing SENTRON 3WL guide frame

Portfolio for the UL market: made for global makers

  • Comprehensive portfolio for the UL market thanks to SENTRON 3WA air circuit breakers and SENTRON 3VA molded case circuit breakers
  • 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 UL1066 and IEC60947-2 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.

The advantages: How global makers benefit

  • Transparent power data can improve energy efficiency by up to 30%.
  • 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.
  • Whereas wiring design used to take up to seven hours, it can now be done at the push of a button – with the graphical SENTRON 3WA configurator.
  • System tests confirm a combination of robust mechanics, automated diagnostics, and webbased upgrades increase the real service life of the circuit breaker, if properly maintained, to potentially as long as 30 years – which represents a huge reduction in system life-cycle costs.
  • SENTRON 3WA air circuit breaker can be easily and inexpensively integrated into switchgear if the SENTRON 3WL air circuit breaker is already integrated.

Create solutions with potential with future-oriented SENTRON 3WA air circuit breakers

Equipped with the pioneering circuit breaker SENTRON 3WA, you can easily implement digitalization and automation.

Strong advantages of SENTRON 3WA air circuit breakers

The circuit breaker SENTRON 3WA offers selectable and upgradeable functions, thus ensuring long-term flexibility. Powerful communication options guarantee secure data transmission. Its energy data acquisition provides maximum transparency in system operation, and simple selection, planning, and ordering enable efficient workflows.

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