Table of contents
3VA molded case circuit breakers with IEC certificate
8 Manual, 03/2019, A5E03603177010-03
6.2.1.3 3VA13 / 3VA14.................................................................................................................568
6.2.1.4 3VA20 / 3VA21 / 3VA22 ...................................................................................................569
6.2.1.5 3VA23 / 3VA24.................................................................................................................570
6.2.1.6 3VA25 ..............................................................................................................................571
6.2.2 Dimensions of accessories ...............................................................................................572
6.2.2.1 Connection technology .....................................................................................................572
6.2.2.2 Plug-in and draw-out units ................................................................................................584
6.2.2.3 Manual operators .............................................................................................................587
6.2.2.4 Motor operators ................................................................................................................600
6.2.2.5 Accessories for locking, blocking and interlocking .............................................................603
6.2.2.6 Residual current devices ..................................................................................................614
6.2.2.7 Communication and system integration ............................................................................619
6.2.2.8 EFB300 external function box ...........................................................................................620
6.2.2.9 Test devices .....................................................................................................................621
6.2.2.10 External current transformer for N conductor ....................................................................622
6.2.2.11 Escutcheon ......................................................................................................................624
6.3 Power losses ....................................................................................................................625
6.3.1 Power losses of 3VA1 molded case circuit breakers .........................................................625
6.3.2 Power losses of 3VA2 molded case circuit breakers .........................................................627
6.4 Derating and temperature compensation ..........................................................................628
6.4.1 Derating of 3VA1 molded case circuit breakers .................................................................628
6.4.2 Temperature compensation for thermal-magnetic trip units TM210, TM220 and TM240 ....632
6.4.3 Additional correction factors with frequencies other than 50/60 Hz for 3VA1 molded
case circuit breakers ........................................................................................................637
6.4.4 Correction factors with direct current for the thermal-magnetic trip units of 3VA1
molded case circuit breakers ............................................................................................638
6.4.5 Derating for the 3VA1 switch disconnector ........................................................................
639
6.
4.6 Derating for the electronic trip units of 3VA2 molded case circuit breakers ........................641
6.4.7 Use of terminals with auxiliary conductor connection ........................................................645
A Appendix .................................................................................................................................. 647
A.1 Standards and approvals ..................................................................................................647
B ESD guidelines .......................................................................................................................... 649
B.1 Electrostatic sensitive devices (ESD) ................................................................................649
C List of abbreviations ................................................................................................................... 651
C.1 List of abbreviations .........................................................................................................651
D Conversion tables ...................................................................................................................... 657
Glossary ................................................................................................................................... 661
Index ........................................................................................................................................ 667
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