Description 
  2.1 Overview - applications and portfolio 
3WA1 air circuit breaker 
Equipment Manual, 02/2023, 92310000002-06 
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•  Optimized, low derating values according to IEC 60947-2 
•  Modular, easy-to-install accessories 
•  Accessories are designed for the maximum service life of the circuit breaker. 
•  Support by CAx files, EPLAN macros and Siemens tools simplifies planning and 
integration of the circuit breaker into the overall installation. 
2.1.2  Portfolio of the 3WA1 circuit breaker 
The 3WA1 series comprises the circuit breakers  
•  3WA11: Size 1 
•  3WA12: Size 2 
•  3WA13: Size 3 
 
The series covers breaking capacities up to 150 kA at 500 V AC. 
 
 
Size 2 covers breaking capacities I
cc
 up to 20 kA at 1500 V DC. 
 
3WA12 DC 
Breaking capacity class I
cc