The ABB VMax 12.12.20 Vacuum Circuit Breaker (VCB) is a high-performance indoor medium-voltage switchgear unit, rated for 11kV operation at 1250A with a breaking capacity of 20kA. This VCB is engineered using ABB’s advanced vacuum interruption technology, providing reliable arc extinction, minimal maintenance, and excellent safety features.

The breaker includes the following key integrated components:

• MO1: Mechanical Operating mechanism

• MC: Mechanical Interlock system

• MS: Mechanical Shutter mechanism

• BB1-2: Busbar interlock and connection modules

Designed for demanding applications in industrial, commercial, and utility installations, this VCB ensures dependable protection and operational continuity.

✅ KEY FEATURES

• ⚡ Rated Voltage: 11kV

• ? Rated Current: 1250A

• ? Short Circuit Breaking Capacity: 20kA

• ? Vacuum Interrupter Technology: Ensures efficient arc quenching without gas emissions

• ?️ MO1 Operating Mechanism: Spring-charged, suitable for manual or motor operation

• ? MC (Mechanical Interlock): Prevents unsafe operations and ensures correct sequencing

• ? MS (Shutter Mechanism): Enhances safety during maintenance by isolating live parts

• ? BB1-2 Busbar Units: Modular design for easy configuration and system integration

• ? Low Maintenance: Vacuum interrupter with a long life and minimal servicing needs

• ? Standards Compliance: Follows IEC 62271-100 standards for medium-voltage switchgear

• ? Application Areas: Indoor power distribution in substations, utilities, infrastructure, and industrial facilities