The ABB VMax/W 12.12.20 Vacuum Circuit Breaker (VCB) is a robust, high-performance indoor medium-voltage breaker rated for 11kV systems, 1250A, and a short-circuit breaking capacity of 20kA. This unit comes equipped with vacuum interrupter technology, ensuring arc-free, reliable switching with long operational life.

This specific model includes:

• MO1 – Mechanical Operating Mechanism

• MC – Mechanical Interlock System

• MS – Mechanical Shutter

• BB1-2 – Busbar & Interlocking Modules

• Female Socket (L=0.8) – For secure and compact plug-in type connection, ensuring easy and reliable integration within panel systems

The VMax/W series is engineered for medium-voltage applications where space, performance, and safety are critical — especially in substations, utility distribution systems, and industrial plants.

✅ KEY FEATURES

• ⚡ Rated Voltage: 11kV

• ? Rated Current: 1250A

• ? Breaking Capacity: 20kA (short-circuit)

• ? Vacuum Interrupter: Arc-free switching, long service life

• ?️ MO1 Operating Mechanism: Spring-charged; supports both manual and motor operation

• ? MC Interlock: Prevents unsafe operating sequences

• ?️ MS Shutter: Automatically covers live parts when disconnected

• ? BB1-2 Modules: Integrated busbar and interlock system for added safety and flexibility

• ? Female Socket (L=0.8): Plug-in style compact connection, enhances installation speed and system reliability

• ? Low Maintenance Design: Maintenance-free interrupters with high mechanical endurance

• ? Standard Compliance: IEC 62271-100

• ? Applications: Suitable for indoor power distribution in industrial, commercial, and utility sectors