South Africa has Africa's most developed manufacturing, mining and automotive industries. Years of load-shedding have made backup power, solar and inverter systems mainstream, so demand for UPS and inverter transformers, chokes and harmonic reactors is strong.
VA Electricals designs and manufactures buck boost transformers at its works in Bhosari, Pune. Every unit is built to your voltages and rating and tested in-house, then packed for export to buyers in Johannesburg, Ekurhuleni, Pretoria and across South Africa.
Built for 230 V single-phase / 400 V three-phase, 50 Hz, with the buck or boost amount chosen to bring your supply to the equipment's rated voltage.
A buck boost transformer raises (boosts) or lowers (bucks) the supply voltage by a small amount so equipment receives the voltage it is designed for. Because it only handles the correction voltage, it is far smaller and more economical than a full isolation transformer for the same load.
For sites in South Africa where the supply sits a little above or below what equipment is rated for, a buck boost transformer corrects the voltage economically, without a full-size transformer.
Lowers a high supply voltage to protect equipment rated for a lower voltage.
View product detailsRaises a low or sagging supply so motors and compressors run at rated voltage.
Designed around your measured supply range and load.
Platinum, gold and coal mines in Gauteng, North West and Mpumalanga run pumps, hoists and conveyors.
Typical use: Bucking or boosting supply voltage by a small amount to match equipment.
Load-shedding has driven rapid growth in rooftop solar, battery and inverter systems.
Typical use: Bucking or boosting supply voltage by a small amount to match equipment.
Vehicle plants in Gqeberha, Durban and Pretoria and their suppliers run large production lines.
Typical use: Bucking or boosting supply voltage by a small amount to match equipment.
Panel builders in Johannesburg and Ekurhuleni supply mining, industrial and commercial projects.
Typical use: Bucking or boosting supply voltage by a small amount to match equipment.
Johannesburg and Cape Town are Africa's largest data-centre markets.
Typical use: Bucking or boosting supply voltage by a small amount to match equipment.
Municipal water utilities and mines run large pumping and dewatering systems.
Typical use: Bucking or boosting supply voltage by a small amount to match equipment.
Many sites in South Africa run on a mix of grid power and diesel generators, with voltage swings and frequent changeovers. Tell us your supply conditions and we design with margin on voltage, temperature rise and duty, so equipment stays protected.
| Function | Buck (step-down) or boost (step-up) voltage correction |
|---|---|
| Rating | As per load and correction required |
| Supply | 230 V single-phase / 400 V three-phase, 50 Hz systems |
| Correction | Set to bring supply to equipment's rated voltage |
| Frequency | 50 Hz (South African grid standard) |
| Construction | Open frame or enclosed |
| Compliance | CE marked under LVD 2014/35/EU (transformers up to 200 kVA); ISO 9001:2015 production |
| Routine tests | Ratio, no-load, insulation resistance, HV breakdown, winding resistance |
Orders for South Africa ship by sea from Nhava Sheva (JNPT) to Durban, the country's main container port, with onward road delivery to Gauteng and other provinces. Urgent consignments can travel by air freight to Johannesburg.
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Of transformer design and manufacturing experience behind every unit.
ISO 9001:2015 quality system and CE conformity under the Low Voltage Directive.
Voltages, ratings, terminals and mounting made to match your design.
Production planned around your project schedule and export shipping dates.
Yes. VA Electricals manufactures buck boost transformers at its works in Pune, India and supplies buyers across South Africa, including Johannesburg, Ekurhuleni, Pretoria, Durban, Dube TradePort.
Yes. Units are built for the 230 V single-phase / 400 V three-phase, 50 Hz supply used in South Africa, with the buck or boost amount chosen to bring your supply to the equipment's rated voltage.
When the supply only needs a small voltage correction and isolation is not required. A buck boost unit handles only the correction voltage, so it is smaller, lighter and lower in cost for the same load.
VA Electricals operates an ISO 9001:2015 certified quality management system and holds MSME ZED Bronze certification. Its products carry CE conformity under the Low Voltage Directive 2014/35/EU, covering transformers up to 200 kVA.
Shipped by sea from Nhava Sheva to Durban, with onward delivery and air freight for urgent needs.
Yes. Tell us about voltage fluctuations, generator use and ambient temperature. We build in margin on voltage, temperature rise and duty so units stay reliable on unstable supplies.
Share your voltages, rating and quantity. Our engineers will send a technical offer for supply to Johannesburg, Ekurhuleni, Pretoria or anywhere in South Africa.