Siemens SENTRON 3VA2 User Manual

3VA molded case circuit breakers with IEC certificate
Manual, 03/2019, A5E03603177010-03
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 ....................................................................................................... 10
2 Description ................................................................................................................................. 13
2.1 Overview - applications and portfolio ................................................................................. 13
2.1.1 Applications and possible uses .......................................................................................... 14
2.1.2 Portfolio ............................................................................................................................. 16
2.1.3 Application examples......................................................................................................... 20
2.1.4 Detailed information about applications and possible uses ................................................. 22
2.1.5 Technical specifications ..................................................................................................... 24
2.1.6 Molded case circuit breakers and accessories in the system .............................................. 28
2.2 Ergonomic design .............................................................................................................. 30
2.2.1 The right circuit breaker for any installation conditions ....................................................... 31
2.2.2 Ergonomic design of circuit breakers, handles and control elements .................................. 34
2.2.3 Wide range of accessories ................................................................................................ 37
2.2.4 Connection technology ...................................................................................................... 39
2.3 Technical details................................................................................................................ 41
2.3.1 Circuit breaker identification............................................................................................... 42
2.3.2 Operation .......................................................................................................................... 46
2.3.3 Design and components - 3VA1 ........................................................................................ 47
2.3.4 Design and components - 3VA2 ........................................................................................ 48
2.3.5 Current limitation ............................................................................................................... 49
2.3.6 Breaking capacity .............................................................................................................. 51
2.3.7 Infeed ................................................................................................................................ 52
2.4 Selectivity .......................................................................................................................... 53
2.5 Standards and guidelines .................................................................................................. 57
2.5.1 Compliance with standards ................................................................................................ 57
2.5.2 Electromagnetic compatibility ............................................................................................ 57
2.
5.3 Certificates ........................................................................................................................ 58
2.5.4 Ambient conditions ............................................................................................................ 58
2.5.5 Permissible mounting positions and mounting positions with accessories .......................... 60
2.5.6 Safety clearances .............................................................................................................. 61
2.5.7 Arcing spaces.................................................................................................................... 67
2.5.8 Degrees of protection ........................................................................................................ 68
2.5.9 Environmental protection ................................................................................................... 68
2.6 Protection system .............................................................................................................. 69
2.6.1 Description of functions ..................................................................................................... 70
2.6.2 Characteristic curves ......................................................................................................... 72
2.6.3 Guide to setting the tripping characteristic.......................................................................... 73

Siemens SENTRON 3VA2 Specifications

General

Brand	Siemens
Model	SENTRON 3VA2
Category	Circuit breakers
Language	English