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ATSS0500 - 230/110V 500VA step-down autotransformer (metal housing, 2 outlets)

500W (4A)
ATSS0500 - 230/110V 500VA step-down autotransformer (metal housing, 2 outlets)
on sale
Dispatched within:
3 days
Price: 274,00 zł
Net price: 222,76 zł

230/110V 500VA step-down autotransformer build in a metal housing with 2 110V outlets, for powering low and medium size appliances originated in USA, Japan, Canada and other countries with 100 - 115V electricity.

How to select transformer (converter, power supply adaptor) for 110 V USA appliances?

Manufacturers usually print appliance’s parameters on the attached tag, displaying its power in Watts [W]. In that case it’s simple. If the power is for example 245 W, select a transformer that is closest to that value on the available list, adding an extra margin of power for safety. In this example, a 300VA transformer should be selected. Some manufacturers display parameters in  Amperes [A]or [Amps] as an electric current required for proper operation; for example 2.7 A or 2.7 Amps. You then need to multiply number of Amperes by 120. In this case 2.7 x 120 = 324. The result represents the approximate power of transformer needed. After adding a safety margin of at least 20%, 400 VA transformer should be selected.


The power of a transformer must always be higher than the power of the apliance connected to that transformer. Otherwise,  either unit can sustain serious damage.

Technical data

Nominal power 500VA
Output voltage 110V
Input voltage 230V
Casing type metal
Sockets 2pcs
Inrush current limiter No
Ground Yes
Overload protection fuse 4A
Weight 2,5kg
Size 130x180x50mm

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