Ensure reliable protection for your electrical machinery with Himel ACB

Circuit breakers are installations on your electrical circuit that prevent it from damage caused by a short circuit current or an overload condition. An Air Circuit Breaker is a switch that protects your electrical circuits over 400 Amps to 5000 Amps from overcurrent and short circuit faults and is generally used for low voltage distribution networks. ACB uses air as a medium to quench the arc (the dielectric medium) at a given atmospheric pressure. For higher voltage applications, ACB uses pressurized air as a dielectric medium because of its higher dielectric constant value when compared to atmospheric air. The primary function in a nutshell is to interrupt the current flow when the fault is detected thus providing protection and safety in industrial operations.

How Air Circuit Breakers work?

Scanning through the ACB, one would find LED indication lamps, ON & OFF switches, the main contact’s indication, fault trip reset switch, etc. On the inside there is a steel sheet structure which houses the current transformer, arcing chambers, closing springs, controls for CB opening and closing, trip unit for protection, main contacts and the arching contacts and the complete set up for your safety.

Normally, an ACB has two contact pairs. The main pair, made of copper, carries current at normal load. Another pair, generally made of carbon, is the arching contact. When the breaker opens, opening the main contacts, arch contacts are still intact. The initiation of arcing arises once the arch contact opens up. The arc discharge then moves due to electromagnetic and thermal effects. The arc path is increased and following it up increases the arc voltage which is done by splitting the arc. This steadily extinguishes the arc during the zero current.

Himel ACB, Superior Protection at Affordable Price

We, at Himel, offer air circuit breakers that are reliable and cost-effective providing complete safety and protection to your commercial setup or industry. The comprehensive range of products helps you choose the perfect one for your electrical ecosystem. We engineer our products to give you value for money with exceeding satisfaction.

Easy to install and maintain

The Himel ACBs are easy to install and with a varied range, you get to choose one that suits your purpose.

Wider operational temperature

ACBs from Himel are equipped to function in a wider range of temperature, making them suitable for a spectrum of applications.

Greater durability

Himel ACB automatically interrupts the current to protect your electrical systems from damage caused by overloads. This switching happens in no time and reduces downtime of operations.

Longer lifespan

The electrical lifetime of Himel ACB is around 10,000 make/break operations. Once installed, it works for a lifetime further optimizing the maintenance cost of operations.

Advanced Trip Units

The ACBs are fitted with new generation protection trip units thus actuating the circuit breaker mechanism ultra-quick.

Remote Operations

Himel ACBs allow seamless operations. One may attach a remote operational push button with the contacts provided to operate the ACBs from an isolated control room.

Diverse applications

ACBs can be used for controlling industrial plants and power stations. It protects transformers, capacitors and generators. They can be installed in places of explosion or fire hazards.

Power Controls

Himel ACB can be used for low and high current and voltage applications offering greater protection against current transmission. Panels using Himel ACBs can be used for safer operations.

Advanced Communication Capabilities

Himel ACB opens doors for new possibilities in your industrial operations. With the advanced communication capabilities, it aids in transmitting all important operational information.

Wide range of accessory mounting

To increase the functionality of an Air Circuit Breaker accessories can be mounted to suit your power protection requirements. The Himel range of ACBs have arrangements for all accessories such as the under-voltage release, shunt coils, mechanical interlocks, auxiliary contacts, etc.

Know more about Himel ranges of ACB here or get in touch with the local sales team to request a quote.