Silverstone supplies SSE-WST series off-circuit tap changers for oil-immersed transformers — strut-type construction, manual drive, for power, rectification, furnace, testing and traction duty on 50/60 Hz systems. Rated through-current up to 630 A three-phase and 800 A single-phase, for equipment voltages from 10 kV to 132 kV — matched to your transformer datasheet and delivered with export documentation.
Key Specifications
Product class
Off-circuit (de-energized) tap changer — SSE-WST series
Typical configurations shown. Final ratings, dimensions and test reports are confirmed per project datasheet — include your specification with the inquiry. Download brochure (PDF) →
Typical Applications
Oil-immersed power transformersRectification transformersFurnace transformersTraction transformersTesting transformers
Frequently Asked Questions
What information do you need to quote a tap changer?
Transformer rated voltage and capacity, single-phase or three-phase, number of tapping steps and tapping range, rated through-current, and mounting dimensions. Add quantity and destination port and we return a priced offer within 24 hours on working days.
Do you supply on-load tap changers (OLTC) as well?
This page covers the SSE-WST off-circuit (de-energized) tap changer series. If your transformer requires an on-load tap changer, send the transformer datasheet and we will source a matching OLTC from our qualified manufacturing partners.
Which transformers do these tap changers fit?
The SSE-WST series suits single- and three-phase oil-immersed transformers for power, rectification, furnace, testing and traction duty, on both 50 and 60 Hz systems, for equipment voltages from 10kV up to 132kV.
Can you supply tap changers together with the transformers?
Yes. We regularly quote tap changers alongside the oil-immersed and dry-type transformers we supply, so mounting interface, tapping range and documentation are matched under one contract. OEM branding and project documentation packages are available.
