Siemens SENTRON 3WA1 Manual page 15

6.1.13 Motor disconnect switch .............................................................................................................. 426
6.1.14 Auxiliary switch ............................................................................................................................... 426
6.1.15 Ready-to-close signaling switch S20 ......................................................................................... 427
6.1.16 Spring charge signaling switch S21 ............................................................................................ 427
6.1.17 Trip alarm switches S24 and S25 ............................................................................................... 427
6.1.18 PSS and PSS COM position signaling switch modules .......................................................... 428
6.1.19 Local electric close S10 ................................................................................................................ 429
6.1.20 ZSI200 zone selective interlocking module ............................................................................... 430
6.1.21 COM150 communication module ................................................................................................ 430
6.1.22 COM190 communication module ................................................................................................ 431
6.1.23 Breaker Status Sensor BSS200 ................................................................................................... 431
6.2 Dimension drawings ...................................................................................................................... 432
6.2.1 3WA1 - size 1 .................................................................................................................................. 432
6.2.1.1 Fixed-mounted circuit breakers .................................................................................................. 432
6.2.1.2 Withdrawable circuit breakers ..................................................................................................... 438
6.2.2 3WA1 - size 2 .................................................................................................................................. 446
6.2.2.1 Fixed-mounted circuit breakers .................................................................................................. 446
6.2.2.2 Withdrawable circuit breakers ..................................................................................................... 453
6.2.3 3WA1 - size 3 .................................................................................................................................. 463
6.2.3.1 Fixed-mounted circuit breakers .................................................................................................. 463
6.2.3.2 Withdrawable circuit breakers ..................................................................................................... 468
6.2.4 Safety clearances ........................................................................................................................... 475
6.2.4.1 3WA - size 1..................................................................................................................................... 475
6.2.4.2 3WA - size 2..................................................................................................................................... 477
6.2.4.3 3WA - size 3..................................................................................................................................... 479
6.2.5 Accessories and door cutouts ..................................................................................................... 481
6.2.5.1 Capacitor storage device .............................................................................................................. 481
6.2.5.2 COM190 communication module ................................................................................................ 481
6.2.5.3 External current sensor for the neutral pole (N-CT)............................................................... 482
6.2.5.4 Support brackets ............................................................................................................................ 484
6.2.5.5 Door cutout/protective cover IP55 ............................................................................................. 485
6.2.5.6 Door sealing frame ......................................................................................................................... 486
6.2.5.7 Interlocks and locking provisions ................................................................................................ 487
6.3 Technical specifications of 3WA circuit breakers ................................................................... 489
6.3.1 Basic data for sizes 1 to 3 ............................................................................................................ 489
6.3.2 Size 1................................................................................................................................................. 490
6.3.2.1 Basic data ........................................................................................................................................ 490
6.3.2.2 Breaking capacity ........................................................................................................................... 491
6.3.2.3 Ampacity, power loss..................................................................................................................... 492
6.3.2.4 Switching times, endurance (operating cycles) ....................................................................... 492
6.3.2.5 Minimum cross-sections of main conductors .......................................................................... 494
6.3.3 Size 2................................................................................................................................................. 495
6.3.3.1 Basic data ........................................................................................................................................ 495
6.3.3.2 Breaking capacity for AC .............................................................................................................. 496
6.3.3.3 Ampacity, power loss for AC ........................................................................................................ 497
6.3.3.4 Switching times, endurance (operating cycles) for AC .......................................................... 497
6.3.3.5 Minimum cross-sections of main conductors for AC.............................................................. 498
6.3.3.6 Breaking capacity for DC .............................................................................................................. 499
6.3.3.7 Ampacity, power loss for DC ........................................................................................................ 500
6.3.3.8 Switching times, endurance (operating cycles) for DC .......................................................... 500
6.3.3.9 Minimum cross-sections of main conductors for DC ............................................................. 502
3WA1 air circuit breaker
Equipment Manual, 02/2023, 92310000002-06
Table of contents
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