Intelligent Air Circuit Breaker (ACB)
Intelligent Air Circuit Breaker (ACB)
Our Intelligent Air Circuit Breaker (ACB) is engineered for high-current power distribution systems, rated up to 6300A, 690V AC, 50/60Hz. It features a high-performance intelligent controller with adjustable protection curves, fault memory, and RS485/Modbus communication interface. The modular design allows quick replacement and maintenance, while the robust mechanical structure ensures stable operation under harsh conditions.
Product Details
Intelligent Air Circuit Breaker (ACB)，also known as intelligent universal circuit breaker, is a core control and protection device for low-voltage distribution systems (≤1000V). It uses air as the arc-extinguishing medium and integrates a microprocessor-based intelligent trip unit, designed for heavy-current (630A–6300A) main incoming, bus tie, and large feeder circuits.
Core Functions
- Multi-protection: Precise overload, short-circuit, under-voltage, and earth fault protection with adjustable time-delay and current settings.
- Real-time monitoring: Tracks current, voltage, power, energy, and temperature; supports fault recording, event logging, and self-diagnostics.
- Communication & control: Equipped with Modbus, Profibus, or Ethernet interfaces for remote monitoring, operation, and maintenance in smart grids.
- High breaking capacity: Reliably interrupts large fault currents (Icu/Ics up to 100kA) to ensure system safety.
Key Features
- Robust & flexible: Modular design, fixed/draw-out mounting; easy maintenance and replacement.
- Selective coordination: Enables grading protection to isolate faults locally without total blackout.
- Wide applications: Ideal for data centers, high-rises, industrial plants, and commercial buildings requiring high power continuity and intelligence.
Summary
Intelligent ACB is the “heart” of modern low-voltage distribution, combining strong breaking performance, precise protection, and smart connectivity to ensure safe, reliable, and efficient power supply.
