CBI Electric

Our History

CBI-electric provides trusted, durable and reliable products for the protection, control and fitting of most Low Voltage electrical installations. We design and supply Electrical Main Switchboards up to 3200 Amp, Distribution Boards, load centres, Temporary Site Switchboards, Switch Gear that utilizes Hydraulic Magnetic technology, switchboard hardware, Auxiliary products and a wide range of electrical Installation products.

Our Business focus within the segments of Electricity management and Installation solutions, allows us to provide products, services, and project solutions to core market segments.

- Mining & Infrastructure
- Industrial
- Commercial
- Residential

- Rail

- Solar

- Utilities

- Telecomms

- Equipment manufacturers

Heinemann Electric 

Heinemann Electric Pty Ltd (now trading as CBI-electric: Australia) was established in Australia in 1959, CBI Electric have been an integral part of the electrical industry, and today the company is one of the largest manufacturers of circuit breakers in the world

The head office of CBI Electric:Australia is based in Melbourne. The company has sales offices in Melbourne and Perth with distributors in Tasmania and FNQ

In 2004 CBI-electric: Australia was acquired by South African Company CBI Electric, this acquisition has helped enhance CBI-electric: Australia’s profile and increase its optimum and sustainable benefits to its customers.

CBI Electric

The foundations of Circuit breaker Industries (CBI Electric) were established in 1949 as a joint venture with Heinemann Company in Trenton, New Jersey, USA. During 1986, a local company, Fuchs Electrical Industries, was acquired and merged into a new company called Circuit Breaker Industries Ltd (CBI Electric). CBI Electric is a wholly owned company of Reunert Limited.

CBI Electric is the only African manufacturer of circuit breakers and residual current devices and has achieved international recognition for its competence and continues to represent the South African Bureau of Standards (SABS) on the technical committees of the International Electro technical Commission (IEC), thus being instrumental in the development of international electrical safety standards.

In 1957, CBI Electric invented the highly sensitive residual current device (RCD), which eventually resulted in South Africa being the first country in the world to make the use of RCD’s mandatory. The development of circuit breakers, from miniature to moulded case circuit breakers, utilizes hydraulic-magnetic technology and most of the circuit breakers CBI Electric manufactures employ the hydraulic-magnetic principle of operation. This technology boasts two distinct properties; one being the accurate tripping characteristics, the other is its independent ambient temperature variations.

A dedicated research team focuses on the effective use of the hydraulic-magnetic technology in circuit breakers. CBI Electric has a substantial design and development capacity with approximately 4% of the staff being employed in the R&D department. They include highly skilled professional engineers, technologists and technicians who have won many national design awards.

The head office and component manufacturing operations are based in Johannesburg. The Company has an assembly plant in Lesotho, and service branches in Cape Town, Durban, Bloemfontein and Port Elizabeth.

CBI electric sales offices in Europe, the United States and Australia complement these operations.

CBI Electric & Safety

At CBI Electric we design & supply all of our products with safety for equipment and the general population as a major importance.

CBI Electric's range of Low Voltage fast acting circuit protection equipment guards against faults & protects your hard earned investments. More demanding legislation & public scrutiny is increasing for operators to demonstrate the safety of their operations. CBI Electric offers a large variety of quality products that meet and exceed all relevant international standards.


CBI Electric South Africa is able to rapidly design, develop and test customised prototype products. This ability, combined with the growing need to meet various international standards, has left to CBI Electric South Africa establishing a world class testing and research laboratory. Our testing facilities are the only private testing facility in the Southern Hemisphere, comprises of a control room, with two 10kA and one 65kA fully computerized test bays. Circuit Breakers up to 65kA can be tested against local and international standards for overload, endurance and vibration, thereby reducing the time required to develop a product from inception to completion.

Quality Management

Quality & safety are high priorities within the business structure of CBI-electric: Australia. Our project processes are clearly defined, always adhered to and constantly revisited to ensure that our high quality standards are met time and again. Our philosophy at CBI Electric has remained unchanged for decades, that being Quality, Service, Delivery.

Our Quality

Our Brands

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CBI – Innovation through Experience

The CBI Brand is a Market leader in design and manufacture of electrical protection.

The CBI range includes circuit breakers for equipment, miniature circuit breakers, molded case and air circuit breakers and auxiliary products for the protection of installations and equipment against overload and short circuit.

These circuit breakers are suitable for use in residential, industrial, communications, and power distribution applications.


Heinelec - Innovation by Design

The Heinelec brand is a leading name in design and manufacture of technically advanced products for electrical protection. Supplying to the residential, industrial, commercial, mining and utility sectors

Distribution Boards:

The Heinelec Range of Distribution Boards are designed and manufactured to the highest quality standards for optimum field versatility, for even the most demanding of applications.

The Heinelec range of distribution boards covers a wide range of applications, from Light & Heavy Commercial and Industrial, through to the Mining Duty Distribution Boards that have produced outstanding results in performing consistently in the toughest of environments over and over again.

Low Voltage Protection Equipment:


Slegers – The best choice for any application

A strategic brand within the CBI-electric: Australia product family, Slegers offers a solution into the hands of the electrical Professional for most electrical installation tasks.

The Slegers range of installation & Cable Laying products includes:

  • quality plastic cable clips

  • spring clip saddles

  • bending springs

  • a large range of fasteners

  • installation & testing tools

  • Cable pulling equipment

  • Temporary Power boards

Polybox – A unique efficient alternative in the enclosure field

A new brand within the CBI-electric: Australia product family, Polybox offers a cost effective alternative to metal enclosures, temp boards and pillars. The products are rotational molded polyethylene enclosures offering 25 years UV protection. The enclosures will not rust or dent are acid resistant flame retarded are up to 60% lighter in the pillar range and 305 lighter in the enclosure range against the standard metal or stainless options.

The Slegers range of installation & Cable Laying products includes:

  • IP43 Enclosures

  • IP54 Enclosures

  • Pillars for distribution

  • Pole mount enclosures