TwinSource is the world leading supplier of SCR based rack mounted static transfer switches. We supply our TwinSource Rack Mounted Static Transfer Switches (STS) to prestigious clients such as AOL, Deutsche Bank, Bank of England, London Futures Funds Exchange (LIFFE), GE, NATS (National AIr Traffic Services), L3 Communications and so on. They all tested our units against other independent SCR type and relay type switches and selected TwinSource due to problems that surfaced in the testing process with other designs.

TwinSource Rack Mounted Static Transfer switches (STS) are all UL listed to UL1008 as well as CE labeled for international use and are rated for 22KA system fault capacity. They have been tested by many critical sites and have been selected over all other designs. UK's largest air traffic control center (NATS) depends on 85 of these units for tracking their military and commercial air traffic over the North Atlantic. No other system but ours passed their exhaustive reliability tests. GE just selected us over other designs for their critical applications as well, so has AOL for their global use. Ford Motor's Windsor Canada Factory's internal power plant experienced numerous boiler control failures in 2001 and they chose our TwinSource Rack Mounted Static Transfer switch to protect their boiler controls and they have had no problems since, at huge savings from the earlier plant wide disruption costs per event.

There is no doubt that the most effective way to truly protect your loads against not just UPS failures but against all operator errors, cable faults, panel breaker trips or any other mishaps is by installing the TwinSource Rack Mounted Static Transfer switch as close to the load as possible, i.e., near or on one of the racks it serves.

For your planning purposes, please allow a shipment lead time of 8-10 weeks for quantities of less than 10 per order. For higher quantities longer lead times are required.

Rack Mounted Static Transfer Switch 20 A - 50A

Rack Mponted Maglatch Transfer Switch