Table of contents
3VA molded case circuit breakers with UL and IEC certification
6 Manual, 01/2019, L1V30435333-01
4.5.6.5 Locking, blocking and interlocking ....................................................................................... 290
4.5.7 Degree of protection ............................................................................................................ 291
4.5.7.1 IP degree of protection ......................................................................................................... 291
4.5.7.2 NEMA degree of protection .................................................................................................. 291
4.5.8 Accessories .......................................................................................................................... 292
4.5.8.1 Illumination kit ...................................................................................................................... 292
4.6 Motor operator...................................................................................................................... 293
4.6.1 Elements of the motor operator MO320 .............................................................................. 293
4.6.2 Description of front panel ..................................................................................................... 294
4.6.3 MANUAL, AUTO and LOCK modes .................................................................................... 295
4.6.4 Operating the molded case circuit breaker with motor operator .......................................... 296
4.6.5 Faults, causes of faults and rectification of faults ................................................................ 300
4.6.6 Technical specifications ....................................................................................................... 301
4.7 Locking and interlocking ...................................................................................................... 302
4.7.1 General information ............................................................................................................. 302
4.7.1.1 General information ............................................................................................................. 302
4.7.1.2 Locking ................................................................................................................................. 302
4.7.1.3 Interlocking ........................................................................................................................... 303
4.7.2 Blocking and locking ............................................................................................................ 305
4.7.2.1 Handle blocking device ........................................................................................................ 305
4.7.2.2 Cylinder locks for locking the 3VA molded case circuit breaker .......................................... 307
4.7.3 Front interlocking.................................................................................................................. 311
4.7.3.1 Cylinder locks for interlocking multiple 3VA UL molded case circuit breakers .................... 311
4.7.3.2 Cable interlock module using a Bowden cable ....................................................................
316
4
.7.3.3 Sliding bar ............................................................................................................................ 319
4.7.4 Rear interlock ....................................................................................................................... 321
4.8 Communication and system integration ............................................................................... 327
4.8.1 System description ............................................................................................................... 327
4.8.2 Communication system of the 3VA UL molded case circuit breaker ................................... 327
4.8.3 COM800 / COM100 breaker data server ............................................................................. 329
4.8.3.1 Area of application ............................................................................................................... 331
4.8.3.2 Features ............................................................................................................................... 331
4.8.4 Communication with ETUs ................................................................................................... 331
4.8.4.1 Area of application ............................................................................................................... 332
4.8.5 DSP800 display.................................................................................................................... 332
4.8.6 Commissioning and testing of electronic trip units using powerconfig ................................ 333
4.8.7 Power management with powermanager ............................................................................ 337
4.9 EFB300 external function box .............................................................................................. 338
4.9.1 General information ............................................................................................................. 338
4.9.2 Power supply ........................................................................................................................ 339
4.9.3 Functions of the digital input and digital outputs .................................................................. 339
4.9.4 Zone-selective interlocking ZSI ............................................................................................ 340
4.9.5 <SET> button ....................................................................................................................... 342
4.9.6 Technical specifications ....................................................................................................... 349
4.10 MMB300 maintenance mode box ........................................................................................
351
4.
10.1 Operating principle of the MMB300 maintenance mode box ............................................... 351
4.10.2 Configuration of MMB300 with a 3VA6 molded case circuit breaker ................................... 353
4.10.3 <SET> button ....................................................................................................................... 357
4.10.4 Power supply ........................................................................................................................
358
4.
10.5 Technical specifications ....................................................................................................... 358
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