Company Profile

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Jocastro loading mini-subs, transformers, switch gear



Jocastro was started in 1969 by Mr. Jose de Castro. The company first started manufacturing panels and switchboards for South Wales Electric as a sub-contractor.

In 1974 Jocastro was formed and started manufacturing panels, switchboards and junction boxes for Eskom.

Since 1974 the company has grown from strength to strength. Between 1975 and the early 1990’s, Jocastro became the biggest manufacturer of Phase 1 relay panels in South Africa with Eskom being the main client.

During the 1980’s Jocastro repeatedly won the Eskom National Contract for junction boxes, relay panels and AC boards, on a competitive basis and in effect became the sole supplier of these items to Eskom for a number of years.

Jocastro workers assembling

Jocastro Continues to Grow


In 1980 the company Rotary Switches was established and formed part of the emerging Jocastro group of companies. This company manufactured self-wiping rotary switches used in the various panels and junction boxes, etc.

Rotary switches were supplied to all the other manufacturers of panels in the country as well. The switch technology and initial infrastructure was purchased “voetstoots” from Germany.

Rotary Switches was expanded in 2000 and the name changed to Lucy Rotary Switches. The product line of the new company was expanded to include 11kV ring oil main units, extensible & non-extensible range.

Jocastro Switch-Boards cc, a black empowerment wing of Jocastro (Pty) Ltd was formed in 1995 to comply with Eskom’s BEE policies.

Jocastro Switch gear



In 2002 Jocastro was approached by FKI switchgear in the UK to manufacture their Eclipse Vacuum Switchgear under licence and became the agents for Hawker Siddeley UK in South Africa, also specializing in Auto Reclosers, DC lightning Switchgear and Outdoor Vacuum Breakers.

Jocastro Factory

In 2008 Jocastro formed an agency with Tianan of Ningbo to distribute their range of (Power Transformers,) Medium and High Voltage Switchgear, Drop out Fuse Links, HV Fuses and Overhead Line Equipment in South Africa. Jocastro has been transforming rapidly as a business. One of the these instrumental changes would be its full BBBEE compliance which provides a strong foundation to build transformation, which is key to developing the business as part of the company’s long term strategy to be sustainable and contribute to the economic growth of South Africa.

Technology at work for you


Jocastro is a major manufacturer of Indoor, Outdoor Medium Voltage Switchgear, Distribution Transformers, Miniature Substations and Metering units. In addition to the Medium voltage equipment Jocastro also manufactures a Low Voltage range of panels, kiosk’s and Box’s to Eskom and major Utilities Specifications. Specialising in these fields, Jocastro can deliver complete packages best suited to your complete project.

Engineered solutions for your project needs


Over the last 40 years Jocastro has been renowned not only for their outstanding quality but also their commitment to being at the forefront of cutting edge technology, design & innovation. With the latest machinery & start of the art software at our disposal quality is a guarantee. As a testament to our confidence in our facilities and product’s, Jocastro is the only manufacturer to offer a 24 Month warranty on all products produced by Jocastro.


Jocastro’s ISO 9001 quality Assurance is Approved by Dekra and is fundamental in ensuring that quality is implemented from purchasing to dispatch. In addition to this Jocastro has build manuals integrated into the manufacturing process and monthly training is enforced to keep up with the ever evolving industry requirements and updated specifications.

As part of the Jocastro Technology philosophy, Information stations are positioned throughout the factory and feature computers with access to drawings, digital build manuals and revisions. All revisions are automatically updated by the design programs in the office, These stations also have printed build manuals and drawing files which allow staff to access any information should they have any queries.

Jocastro CNC Metal Punch

Service that you would expect from a world leader


Jocastro’s Products are all SABS approved and t ype tested at N ETFA Laboratories. We fully conform with IEC and BS standards. All Products that are manufactured under license are IEC approved and type tested at KEMA in Germany. Further to this all products are manufactured in accordance with major utilities specifications including ESKOM & Municipalities. 

Our state of the Art test bay features 

  • Pressure testing
  • High frequency testing
  • Temperature rise testing
  • Circuit resistance testing
  • Ratio testing
  • Current injection
  • Insulation testing

Jocastro Transformer Winding Machine

Jocastro is expanding to meet your project needs

3D Rendering of the new Jocastro Factory

Plans for the new Jocastro Factory


The ultra-modern factory will boast office space of 100m2, a factory floor of 16000m2, and a total stand of 22 000m2.

Overhead cranes will be installed to allow for easy installation and manufacturing flow. 

3D Model of the new Jocastro Factory



The Factory is to built in 4 phases. Phase one is already complete and Jocastro is and has been manufacturing from the facility for over two years. 

Phase two is expected to start in 2013. Phase three in 2014 and phase four in 2015.

Plans for phase 2 of the new Jocastro Factory

Front 3D Model of the new Jocastro Factory


For Sales and Enquires Click Here or call (011) 894 2123