The ABB VD4 12.12.32 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 31.5kA. Utilizing ABB’s advanced vacuum interrupter technology, the VD4 series provides reliable, arc-free interruption with long operational life and minimal maintenance.

This model includes the standard accessories:

• MO1 – Spring-charged mechanical operating mechanism

• MC – Mechanical interlock ensuring safe operation

• MS – Mechanical shutter for protection of live parts

• BB1-2 – Busbar and interlocking modules for secure panel integration

The VD4 12.12.32 is suitable for heavy-duty industrial, utility, and commercial applications requiring high fault-level protection and compact switchgear design.

✅ KEY FEATURES

• ⚡ Rated Voltage: 11kV

• ? Rated Current: 1250A

• ? Breaking Capacity: 31.5kA (short-circuit) – supports high fault current interruption

• ? Vacuum Interrupter Technology: Safe, clean arc interruption with extended breaker life

• ?️ MO1 Mechanism: Spring-operated, supporting manual or motorized operation

• ? MC Interlock: Prevents unsafe breaker operation during racking and switching

• ?️ MS Shutter: Automatically covers live terminals during maintenance or withdrawal

• ? BB1-2 Modules: Provides secure busbar connection and mechanical interlocking in panels

• ? Low Maintenance Design: Vacuum technology reduces wear and servicing needs

• ? Standards Compliance: IEC 62271-100 certified

• ? Applications: Ideal for industrial plants, substations, and commercial power distribution systems requiring reliable and compact high-capacity breakers