PPMV Product Management VD 4R MV vacuum circuitbreakers

PPMV – Product Management VD 4/R MV vacuum circuit-breakers for secondary distribution

VD 4/R Core technology Upper terminal Vacuum interrupter (VI) Epoxy resin cylinder Stem Lower terminal Flexible connection Contact force spring Push rod Fixing point Operating mechanism connection

VD 4/R Vacuum Interrupter (VI) Interrupter lid Stem/Terminal Contacts Shield Ceramic insulator Shield Interrupter lid Bellow Twist protection Stem/terminal

VD 4/R Quenching technique © ABB Group June 6, 2021 | Slide 4

VD 4/R Main components © ABB Group Month DD, Year | Slide 5 1. Protection relay (accessory) 2. Closing pushbutton 3. Opening pushbutton 4. CB contacts status (open/closed) 5. Integrated closing spring charging lever 6. Charged/discharged closing spring indicator (accessory) 7. MV terminals 8. Epoxy resin poles with embedded Vacuum Interrupters (VI) 9. Current transformers/sensors (accessory) 10. Operation counter 11. Keylock in open position 12. Mechanical override of undervoltage shunt opening release (accessory)

VD 4/R Integrated solution | Slide 6 © ABB Group Month DD, Year

VD 4/R Wide range of accessories - © ABB Group Month DD, Year | Slide 7 Shunt opening release Auxiliary contacts (5 to 15) Key lock in open position Additional shunt opening release Opening solenoid (PR 521) Shunt closing release Motor charger for closing spring Thermal relay for protecting motor charger Undervoltage shunt opening release Charged/discharged spring signalling contact Pushbutton protection Padlock Wheels

VD 4/R Reliability and flexibility Reliability - 10. 000 Close-open operations - Maintenance-free - Embedded VI protected from external environment © ABB Group Month DD, Year | Slide 8 Flexibility - Wide range of accessories - Possibility to have relays and CTs on board - Interchangealbe with HD 4/R

VD 4/R Vacuum circuit breaker for secondary distribution AIS § On board relay and CTs/sensors § Interchangeable with HD 4/R Command able to do fast operation cycle: O-0. 3 s-CO-15 s-CO Rated Voltage [k. V] 12 17. 5 Rated Current [A] Short time current [k. A] © ABB Group Month DD, Year | Slide 9 24 1250 25 (3 s) 20 (3 s) Mechanical class M 2 Electrical class E 2