This product manual introduces the characteristics and features of the medium-voltage vacuum circuit breaker VD4, including the opening principle, installation method, application field, standards and certificates, operation safety, accessories, operating mechanism, technical documents, quality system, environmental management system and health and safety management system.
This manual provides a complete overview of the ABB VD4 vacuum circuit breaker, including its modular operating mechanism, overall cast epoxy pole design, and vacuum arc extinguishing technology. It details the breaker’s rated voltage range, current capacity, breaking capacity, and the protective features that ensure reliable operation in medium‑voltage distribution systems.
The document also covers selection and ordering, mechanical and electrical interlocks, fixed and withdrawable installation methods, accessory options, applicable standards, and environmental and safety management systems. Technical drawings such as electrical schematics and dimension tables are included for engineers and service personnel. This manual is written in Chinese.
| Rated voltage | 12…24 kV |
|---|---|
| Rated current | 630…4000 A |
| Rated breaking capacity | 20…40 kA |
| Type | Vacuum circuit breaker |
| Applicable standards | GB 1984‑2003, IEC 62271‑100 |
The VD4 breaker can be installed in a fixed configuration or as a withdrawable unit that can be swung in and out of the switchgear cabinet.
The breaker meets GB 1984‑2003 and IEC 62271‑100 as well as other major industrial standards.