Table of contents
3WA1 air circuit breaker
14 Equipment Manual, 02/2023, 92310000002-06
6.3.4 Size 3 .................................................................................................................................................502
6.3.4.1 Basic data .........................................................................................................................................502
6.3.4.2 Breaking capacity ...........................................................................................................................503
6.3.4.3 Ampacity, power loss .....................................................................................................................504
6.3.4.4 Switching times, endurance (operating cycles) .......................................................................504
6.3.4.5 Minimum cross-sections of main conductors ...........................................................................506
6.3.5 Connection options for auxiliary conductor plug-in system...................................................506
6.4 Ambient conditions .........................................................................................................................507
6.5 Installation altitudes.......................................................................................................................508
6.6 Standards .........................................................................................................................................508
6.7 Approvals ..........................................................................................................................................509
6.8 Failure probability acc. to B10 and B10d ...................................................................................510
6.9 Electromagnetic compatibility ......................................................................................................514
7 Integration in power distribution equipment ................................................................................. 515
7.1 Compact design...............................................................................................................................515
7.2 Influencing factors ..........................................................................................................................516
7.3 Derating in the power distribution equipment ..........................................................................517
7.3.1 Overview ...........................................................................................................................................517
7.3.2 Derating 3WA11 ..............................................................................................................................517
7.3.3 Derating 3WA12 ..............................................................................................................................522
7.3.4 Derating 3WA13 ..............................................................................................................................524
7.4 Requirement according to IEC 61439 .........................................................................................526
7.4.1 Standard IEC 61439 ........................................................................................................................526
7.4.2 Simplified integration .....................................................................................................................527
7.4.2.1 Structural integration in power distribution equipment..........................................................527
7.4.2.2 Using 3WA circuit breakers in 3WL guide frames....................................................................528
7.4.2.3 Retrofit: Simple replaceability in existing power distribution equipment ...........................529
7.4.2.4 Checklist for replacing 3WL with 3WA circuit breaker according to IEC 61439-2 ............535
7.5 Phase barriers and horizontal partitions ....................................................................................537
7.6 Insulation test of the power distribution equipment ...............................................................539
7.7 Main connection..............................................................................................................................540
8 Troubleshooting ............................................................................................................................... 541
8.1 Troubleshooting for circuit breaker.............................................................................................541
8.2 Troubleshooting for the ETU600 electronic trip unit ...............................................................543
8.3 Troubleshooting for COM150 / COM 190 communications module ....................................547
9 Disposal ............................................................................................................................................ 549
9.1 End of maximum service life ........................................................................................................549
9.2 Disposal of low-voltage circuit breakers....................................................................................549
9.3 Disposal of waste electronic equipment ....................................................................................549
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