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Air Circuit Breaker (ACB)

Air Circuit Breakers (ACBs) play a pivotal role in ensuring the safety and reliability of electrical systems. These devices are essential components that protect circuits from overloads and short circuits, preventing potential hazards. In this article, we’ll delve into the world of Air Circuit Breakers, exploring their functionality, types, advantages, and their impact on the ever-evolving field of electrical engineering.  

How Does an ACB Work?

At its core, an Air Circuit Breaker operates on the principle of interrupting the current flow in a circuit when necessary. It consists of various components such as contacts, arc quenching chamber, and tripping mechanisms. When a fault occurs, the ACB swiftly interrupts the current flow, preventing damage to the connected devices and ensuring the safety of the electrical system.

Types of Air Circuit Breakers

Molded Case ACB: Molded Case ACBs are compact and suitable for a wide range of applications. They provide reliable protection and are known for their durability and ease of installation.

Draw-out ACBs: Draw-out ACBs offer added convenience during maintenance as they can be easily removed for inspection or replacement without disrupting the entire system.

Air Blast Circuit Breakers: Air Blast Circuit Breakers use a high-pressure air blast to extinguish the arc, making them efficient in interrupting heavy currents.


Air Circuit Breaker (ACB) Price in Bangladesh

While the initial cost of installing Air Circuit Breaker (ACB) price in Bangladesh might be higher, the long-term benefits, including reduced maintenance expenses and increased reliability, contribute to a positive return on investment. 

Specification of ACB

  1. Current rating: 3200 A (Ics ≥ 65 kA for service breaking capacity) 
  2. Number of poles: 3 
  3. Type: EDO stands for electrically operated draw out.
  4. Make/Model and order code: NW (NW32H13PEDO6.0A) & Schneider Electric/Master Pact 
  5. Tripping coil: Three-wire communicative type AC/DC 100-130 V 
  6. Closing coil: Three-wire communicative type AC/DC 100-130 V 
  7. Spring charging motor: 230 V AC, 50 Hz.