Siemens Sentron 3VA - Table of Contents

3VA molded case circuit breakers with UL and IEC certification
Manual, 01/2019, L1V30435333-01
3
Table of contents
1 Introduction ............................................................................................................................................. 9
1.1 About this documentation ......................................................................................................... 9
1.2 Product-specific information ................................................................................................... 10
1.2.1 Target readers ........................................................................................................................ 10
1.2.2 Technical Support ................................................................................................................... 10
1.2.3 Reference documents ............................................................................................................. 11
2 Description ............................................................................................................................................ 13
2.1 Overview - applications and portfolio ...................................................................................... 13
2.1.1 Applications and possible uses ............................................................................................... 13
2.1.2 Aspects of the UL market - Low-voltage systems in the USA ................................................ 14
2.1.3 Portfolio ................................................................................................................................... 16
2.1.4 Detailed information about applications and possible uses .................................................... 21
2.1.5 Technical specifications .......................................................................................................... 22
2.1.6 Molded case circuit breakers and accessories in the system ................................................ 26
2.2 Ergonomic design ................................................................................................................... 28
2.2.1 Installation variants for 3VA UL .............................................................................................. 28
2.2.2 Ergonomic design of circuit breakers, handles and control elements .................................... 31
2.2.3 Wide range of accessories ..................................................................................................... 34
2.2.4 Connection technology ........................................................................................................... 36
2.3 Technical details ..................................................................................................................... 38
2.3.1 Circuit breaker identification ................................................................................................... 38
2.3.2 Operation ................................................................................................................................ 47
2.3.3 Current limitation ..................................................................................................................... 48
2.4 Standards and guidelines ....................................................................................................... 50
2.4.1 Compliance with standards and electromagnetic compatibility .............................................. 50
2.4.2 Certificates .............................................................................................................................. 51
2.4.3 Ambient conditions .................................................................................................................. 51
2.4.4 Permissible mounting positions and mounting positions with accessories ............................ 53
2.4.5 Safety clearances (for IEC applications)................................................................................. 54
2.4.6 Breaker venting ....................................................................................................................... 59
2.4.7 Minimum enclosure dimensions ............................................................................................. 60
2.4.8 I
P degrees of protection .......................................................................................................... 61
2.4.9 Environmental protection ........................................................................................................ 62
2.5 Protection functions ................................................................................................................ 63
2.5.1 Description of functions........................................................................................................... 64
2.5.2 Characteristic curves .............................................................................................................. 66
2.5.3 Guide to setting the tripping characteristic.............................................................................. 67
2.5.4 Overload protection (L) ........................................................................................................... 68
2.5.5 Short-time delayed short-circuit protection (S) ....................................................................... 69
2.5.6 Instantaneous short-circuit protection (I) ................................................................................ 69