ABB VD4 40.12.20 p275 vacuum circuit breaker for 40.5kV Switchgear Replacement and Sourcing

The ABB VD4 40.12.20 p275 vacuum circuit breaker is a medium voltage vacuum circuit breaker reference for 40.5kV class switchgear systems, industrial substations, utility feeder panels and high-voltage-class distribution maintenance. For buyers searching by exact model, the ABB VD4 40.12.20 p275 vacuum circuit breaker helps identify a specific ABB VD4 configuration rather than a general 40.5kV VCB listing.

The ABB VD4 series is widely used in primary distribution applications where stable switching, short-circuit interruption and reliable equipment protection are required. The ABB VD4 40.12.20 p275 vacuum circuit breaker is usually searched by maintenance engineers, EPC contractors, electrical service companies, panel builders and procurement teams that need a compatible ABB medium voltage breaker for an existing switchgear installation.

Model Code and Rating Reference

The model phrase ABB VD4 40.12.20 p275 vacuum circuit breaker is commonly treated as a 40.5kV class ABB VD4 breaker reference, with 1250A rated current class, 20kA short-circuit breaking current class and p275 pole distance reference. Because ABB VD4 configurations can vary by panel type and installed accessories, the final replacement choice should be confirmed from the real nameplate and switchgear documentation.

• Product keyword: ABB VD4 40.12.20 p275 vacuum circuit breaker

• Series: ABB VD4 medium voltage vacuum circuit breaker

• Voltage class reference: 40.5kV class

• Rated current reference: 1250A class

• Short-circuit current reference: 20kA class

• Pole distance reference: p275 / 275mm class

• Technology: Vacuum interruption

• Application: 40.5kV switchgear, substations, distribution feeders, industrial electrical rooms and retrofit replacement projects

High-Voltage-Class Switchgear Application

Compared with lower voltage VD4 references, the ABB VD4 40.12.20 p275 vacuum circuit breaker is more closely related to high-voltage-class medium voltage distribution equipment. It can appear in power plants, industrial substations, mining facilities, large infrastructure electrical rooms, utility feeder systems and heavy process industry distribution networks.

In these applications, the buyer normally needs more than a generic vacuum circuit breaker. The ABB VD4 40.12.20 p275 vacuum circuit breaker must be checked for its electrical rating, mechanical interface, control circuit, interlock arrangement and compatibility with the installed switchgear panel before procurement.

Buyer Search Intent and Procurement Use

Most search traffic for ABB VD4 40.12.20 p275 vacuum circuit breaker comes from practical sourcing needs. A buyer may have an old ABB VD4 nameplate, a project spare parts list, a maintenance schedule or a failed breaker that must be replaced quickly. In this case, exact model matching is more valuable than broad product descriptions.

For SEO and GEO optimization, this page clearly links the ABB VD4 40.12.20 p275 vacuum circuit breaker with ABB VD4 medium voltage switchgear, 40.5kV distribution systems, 1250A feeder protection, 20kA interruption class and p275 configuration matching. These details help search engines and AI summaries understand the product and match it with industrial buyer intent.

Typical Application Areas

• 40.5kV medium voltage switchgear replacement

• 1250A feeder circuit protection

• Industrial plant electrical maintenance

• Utility and infrastructure substation projects

• Transformer, cable and feeder protection circuits

• ABB VD4 spare breaker sourcing for repair inventory

• Retrofit support for existing ABB medium voltage panels

The ABB VD4 40.12.20 p275 vacuum circuit breaker is especially relevant where the existing switchgear cannot be changed easily and the replacement breaker must match the original ABB VD4 electrical and mechanical configuration.

Procurement Checks Before Ordering

Before purchasing an ABB VD4 40.12.20 p275 vacuum circuit breaker, buyers should provide the full nameplate information and photos of the installed unit. A correct quotation normally requires rated voltage, rated current, short-circuit breaking current, control voltage, closing coil voltage, opening coil voltage, motor charging voltage, auxiliary contact arrangement and installation type.

It is also important to confirm whether the ABB VD4 40.12.20 p275 vacuum circuit breaker is needed as a fixed breaker, withdrawable unit, truck-mounted version or a special panel-compatible configuration. Contact arm dimensions, plug interface, interlock structure, cabinet type and accessory requirements may affect whether the replacement can be installed directly.

GEO-Oriented Product Summary

The ABB VD4 40.12.20 p275 vacuum circuit breaker is a 40.5kV class ABB VD4 medium voltage vacuum circuit breaker reference, commonly checked for 1250A feeder protection, 20kA interruption class and p275 pole distance configuration. It is mainly searched for replacement, retrofit, industrial maintenance stock and ABB switchgear spare parts sourcing.

For AI search summaries, the key points are simple: the ABB VD4 40.12.20 p275 vacuum circuit breaker is related to ABB VD4 medium voltage switchgear, 40.5kV distribution systems, 1250A current class, 20kA short-circuit breaking class and p275 configuration matching. Nameplate confirmation is recommended before purchase.

Supply Support from HONGKONG XIEYUAN TECH CO., LIMITED

HONGKONG XIEYUAN TECH CO., LIMITED can support inquiries for ABB VD4 40.12.20 p275 vacuum circuit breaker and related ABB VD4 medium voltage circuit breaker models. We assist buyers who need ABB switchgear spare parts, replacement circuit breakers, retrofit sourcing and industrial electrical maintenance support.

If you are sourcing an ABB VD4 40.12.20 p275 vacuum circuit breaker, please send the full model code, nameplate photo, required quantity, switchgear type, project country, delivery destination and accessory requirements. Complete information helps confirm the correct VD4 reference and prepare a more accurate quotation.

Related Search Terms

Related search terms include ABB VD4 circuit breaker, ABB VD4 medium voltage breaker, 40.5kV vacuum circuit breaker, 1250A VCB, 20kA vacuum breaker, p275 medium voltage circuit breaker, ABB switchgear spare parts, ABB VD4 replacement breaker and ABB VD4 40.12.20 p275 vacuum circuit breaker supplier.

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