The ABB VD4 12.12.25 Vacuum Circuit Breaker (VCB) is a high-capacity, medium-voltage indoor breaker designed for 11kV systems, with a rated current of 1250A and a short-circuit breaking capacity of 25kA. Built with ABB's proven vacuum interrupter technology, the VD4 series delivers reliable arc suppression, long electrical endurance, and superior operational safety.

This specific model includes:

• MO1 – Spring-operated Mechanical Operating Mechanism

• MC – Mechanical Interlock for safety during racking and operation

• MS – Mechanical Shutter to prevent accidental contact with live parts

• BB1-2 – Busbar and Interlock Modules for secure panel integration

The VD4 12.12.25 is ideal for utilities, industrial distribution, and commercial infrastructures where high fault-level protection and long-term reliability are essential.

✅ KEY FEATURES

• ⚡ Rated Voltage: 11kV

• ? Rated Current: 1250A

• ? Breaking Capacity: 25kA (short-circuit) – ensures high-level protection

• ? Vacuum Interrupter Technology: Provides arc-free interruption and extended breaker life

• ?️ MO1 Operating Mechanism: Spring-charged; suitable for manual and motorized operation

• ? MC Interlock System: Prevents unsafe operations (e.g., racking under load)

• ?️ MS Shutter: Automatically covers live terminals when breaker is disconnected

• ? BB1-2 Busbar & Interlock Modules: For safe and secure integration into switchgear panels

• ? Low Maintenance Design: No arc chutes or frequent part replacements needed

• ? Standard Compliance: IEC 62271-100

• ? Application Areas: Ideal for medium-voltage switchgear in substations, heavy industries, and infrastructure systems requiring compact, high-capacity breakers