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Discussion History

SF6 Circuit Breaker

Assembly

Three-pole gas-insulated interrupter that breaks fault current and isolates the line on relay command. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.

SF6 Circuit Breaker parts and their functions

5 top-level parts · 41 parts in total · full bill of materials below
SF6 Circuit Breaker parts diagram: 1 interrupter chamber, 2 operating mechanism, 3 SF6 density monitor, 4 support insulator column, 5 grading capacitor. 41 parts in 5 top-level items.
SF6 Circuit Breaker parts diagram. Numbers match the table below; each box is one top-level part or assembly with what it contains.
#PartQtyWhat it does
1 Interrupter Chamber 5 parts 3× One puffer chamber per phase
2 Operating Mechanism 6 parts 1× Spring or hydraulic drive
3 SF6 Density Monitor 3× Gas density and lockout switch
4 Support Insulator Column 3× Hollow porcelain support columns
5 Grading Capacitor 3× Voltage grading across contacts

3D model

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Build & assembly graph

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Bill of materials for SF6 Circuit Breaker

5 top-level lines · 16 rows shown · 41 parts total · indented to 3 levels
# Item / sub-assembly Part no. Qty/assy Ext. qty Parts Type
1 Interrupter Chamber 5 parts ais-interrupter-chamber 3× 3 8 assembly
1.1 Arcing Contact ais-arcing-contact 2× 6 · part
1.2 Main Contact ais-main-contact 2× 6 · part
1.3 PTFE Arcing Nozzle ais-nozzle-ptfe 1× 3 · part
1.4 Puffer Cylinder ais-puffer-cylinder 1× 3 · part
1.5 O-Ring Set oring-set 2× 6 · part
2 Operating Mechanism 6 parts ais-operating-mechanism 1× 1 8 assembly
2.1 Coil Spring coil-spring 2× 2 · part
2.2 Spring Charging Motor ais-charging-motor 1× 1 · part
2.3 Trip Coil ais-trip-coil 2× 2 · part
2.4 Closing Coil ais-close-coil 1× 1 · part
2.5 Auxiliary Switch ais-aux-switch 1× 1 · part
2.6 Helical Gear Pair gear-pair 1× 1 · part
3 SF6 Density Monitor ais-sf6-density-monitor 3× 3 · part
4 Support Insulator Column ais-support-insulator-column 3× 3 · part
5 Grading Capacitor ais-grading-capacitor 3× 3 · part

Where the SF6 circuit breaker is used

2 products across 1 domain contain it, directly or inside a sub-assembly

Used in 2 assemblies

Air-Insulated Substation Bay AC Switchyard

Sourcing: possible vendors

Browse the supplier directory → Prices, MOQ, and lead times are algorithmic estimates, not quotes, and not claims about these companies. Company mappings are curated by keyword; est. price band $0.50–$100. How estimates work
VendorHQSpecialtyMOQLead time
🇨🇳Foxconn
foxconn.com ↗ 		Shenzhen, CN Electronics contract mfg 1,000 pcs 6–10 wks
🇸🇬Flex (Singapore)
flex.com ↗ 		Singapore Electronics contract mfg 1,000 pcs 6–10 wks
🇮🇳Dixon Technologies
dixoninfo.com ↗ 		Noida, IN Electronics contract mfg 1,000 pcs 6–10 wks
🇨🇳BYD Electronics
bydelectronic.com ↗ 		Shenzhen, CN Electronics contract mfg 1,000 pcs 6–10 wks
🇸🇬Venture Corp
venture.com.sg ↗ 		Singapore Electronics contract mfg 1,000 pcs 6–10 wks