3WT Air Circuit Breakers up to 4000 A Catalog LV 35 • 2009 Low-Voltage Controls and Distribution

Low-Voltage Controls and Distribution SIRIUS · SENTRON · SIVACON Order No. German/English: Catalog E86060-K1002-A101-A8 E86060-K1002-A101-A7-7600 Incl. PDF CD-ROM Technical Information E86060-T1002-A101-A8 E86060-T1002-A101-A7-7600 LV 1 LV 1 T Systems · Controlgear: Contactors and contactor assemblies, solid-state switching devices · Protection equipment · Motor starters, soft starters and load feeders · Monitoring and control devices · Detecting devices · Commanding and signaling devices · Transformers · Power supplies · Planning and configuration with SIRIUS · Power Management System · SIVACON...

Low-Voltage Controls and Distribution 3WT Air Circuit Breakers up to 4000 A Catalog LV 35 · 2009 Invalid: Catalog LV 35 · 2006 Contact your local Siemens representative for further information © Siemens AG 2008 Introduction 1 3WT Air Circuit Breakers up to 4000 A (AC) 2 Appendix 3 © Siemens AG 2008

Niederspannungs-Schalttechnik 2 Siemens LV 35 · 2009 Notes © Siemens AG 2008

1 Siemens LV 35 · 2009 Introduction 1/2 Answers for Industry. 1/4 3WT Air Circuit Breakers. The smart choice. © Siemens AG 2008

Siemens LV 35 · 2009 1/3 Answers for Industry. Siemens Industry answers the challenges in the manufacturing and the process industry as well as in the building automation business. Our drive and automation solutions based on Totally Integrated Automation (TIA) and Totally Integrated Power (TIP) are employed in all kinds of industry. In the manufacturing and the process industry. In industrial as well as in functional buildings. Siemens offers automation, drive, and low-voltage switching technology as well as industrial software from standard products up to entire industry solutions. The industry...

1/4 Siemens LV 35 · 2009 Flexibility •New electronic trip units (ETU) with outstanding features. •Only two frame sizes cover a broad range of applications from 400 A to 4000 A, up to 66 kA at 500 V, 3- or 4-pole version, fixed-mounted, withdrawable version. •All components can be combined in a modular way. Ease of use •User friendliness in planning, configuration, installation and operation. •Wide range of accessories for both frame sizes can be easily retrofitted. •Displays for all electronic trip units (ETU). Safety and reliability • International and standardized processes ensure highest product...

Siemens LV 35 · 2009 2 2/2 General data 2/16 3- and 4-pole, withdrawable version inclusive standard accessories 2/17 3- and 4-pole, fixed-mounted version inclusive standard accessories 2/18 3- and 4-pole, withdrawable version 2/20 3- and 4-pole, fixed-mounted version 2/21 Non-automatic air circuit breakers, 3- and 4-pole, fixed-mounted and withdrawable version 2/22 Options 2/29 Accessories/spare parts 2/33 Project planning aids 3WT Air Circuit Breakers up to 4000 A (AC) © Siemens AG 2008

3WT Air Circuit Breakers up to 4000 A (AC) General data Siemens LV 35 · 2009 2/3 2 ¡Benefits Safety and reliability •High degree of protection with door sealing frame in the case of exclusively local operation of the circuit breaker • Infeed supply from above or below, as required • Locking of the withdrawable circuit breaker against moving, as standard • Locking of the guide frame with the circuit breaker removed, as standard • Signaling switch for overload and short-circuit tripping with mechanical closing lockout •High degree of protection with cover IP55 • Mechanical closing lockout after...

3WT Air Circuit Breakers up to 4000 A (AC) General data 2/4 Siemens LV 35 · 2009 2 ¡Function Operating mechanisms (see illustration "Motorized operating mechanism") The circuit breakers are available with various optional operating mechanisms: • Manual operating mechanism with memory, with mechanical closing •Manual operating mechanism with mechanical and electrical closing • Motorized operating mechanism that can also be operated manually, with mechanical and electrical closing. The operating mechanisms with electrical closing can be used for synchronization tasks. EMERGENCY-STOP facility The...

3WT Air Circuit Breakers up to 4000 A (AC) General data Siemens LV 35 · 2009 2/5 2 Guide frames Closing of the crank hole is only possible in the circuit breaker positions (connected, test or disconnected position). The circuit breaker position is shown on a display on the circuit breaker. The circuit breaker is moved with the help of a hand crank. The connected position as well as the disconnected position is achieved by moving the circuit breaker to the end stop. • Shutters Inadvertent touching of live main contacts or busbars is prevented by covering with a shutter. The shutter is constructed...

3WT Air Circuit Breakers up to 4000 A (AC) General data 2/6 Siemens LV 35 · 2009 2 Opening, closing and locking devices • ON and OFF buttons - Mechanical ON button In the standard version, the mechanical ON button is a pushbutton. As an alternative to a pushbutton, a safety lock (CES) can also be supplied. If the key is removed in the "0" position, it is no longer possible to close the circuit breaker mechanically. - Mechanical OFF button In the standard version, the mechanical OFF button is a pushbutton. • Locking device against moving the withdrawable circuit breaker Access to the crank hole...

3WT Air Circuit Breakers up to 4000 A (AC) General data Siemens LV 35 · 2009 2/7 2 Test device for Electronic trip unit ETU Test device The handheld test device is used to verify the proper operation of the electronic trip unit, the energy transformers and current transformers as well as the tripping solenoid F5 and the data display. Ground-fault protection Description Ground-fault releases "G" sense fault currents that flow to ground and that can cause fire in the plant. Multiple circuit breakers connected in series can have their delay times adjusted so as to provide time-graded discrimination....