Are the primary and secondary windings isolated

No, it is not. It is an autotransformer

Does this transformer work on electronically controlled devices? And devices that have auto on/off features or are temperature controlled?

Yes, this is basically a step down transformer, this plugs into a 220 or 240 Volt AC outlet and puts out 120 or 110 Volt pure sine wave AC, most things made for that voltage will work just the me same as it did plugged into a 110/120 volt outlet. Note the frequency is still 50 hertz not the normal 60 hertz. A fan will run slower, most modern equipment will not be affected by the frequency difference as they convert the AC voltage to DC and use voltage regulators to make the voltage correct. Make sure you check the wattage on the device you want to use and have room for a startup surge so you don’t blow the fuse when starting a device. If still in doubt google “step down transformers” powering a device like you want to use. Hope this helps.

Does this transformer have a nrtl listing?

This transformer is CE Certified.

Can I use this on a deyer?

No, you cannot use it with a dryer.

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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Simran 300W Step Down Voltage Transformer Converts 220 volt to 110 volt for International Use, THG-300

Product ID: 8934478

Details

Brand
Simran
Power Source
AC
Mounting Type
Portable
Specification Met
CE
Item Weight
5.3 Pounds

⚡300W heavy-duty power

🔌Universal US & Euro plug compatible

🛡️Built-in fuse protection + 2 extras

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₪287

Duties & taxes included

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Sold byAmazon IsraelDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🌍 Power your global lifestyle with confidence!

DURABLE PORTABLE DESIGN - Heavy-duty cord and European Schuko plug built to last and easy to carry on your next trip.
UNIVERSAL PLUG ACCEPTANCE - One grounded outlet supports 2 or 3 prong US & Euro plugs—travel light, plug anywhere.
DUAL VOLTAGE COMPATIBILITY - Seamlessly converts 220/240V to 110/120V for global peace of mind.
RELIABLE 300 W CONTINUOUS POWER - Handles your essential devices without a hiccup, perfect for daily international use.
SAFETY FIRST WITH FUSE PROTECTION - Includes built-in fuse and 2 spare fuses to keep your devices and transformer safe under power surges.

The Simran THG-300 is a CE-certified, heavy-duty 300W step-down voltage transformer designed for continuous use. It converts single-phase 220/240V input to 110/120V output, compatible with both 50Hz and 60Hz frequencies. Featuring a grounded outlet that accepts US and Euro plugs, a durable heavy-duty cord, and built-in fuse protection with two spare fuses included, this portable transformer is ideal for international travelers and professionals needing reliable voltage conversion.

Specifications

ASIN	B00F3WRFZS
Best Sellers Rank	#231,737 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #960 in Power Converters
Brand	Simran
Brand Name	Simran
Customer Reviews	4.0 out of 5 stars 28 Reviews
Global Trade Identification Number	00810128011228
Included Components	transformer; 2-extra fuses
Item Type Name	220 volt to 110 volt step down transformer voltage converter power converter
Item Weight	5.3 Pounds
Manufacturer	Simran
Maximum Frequency	60 Hz
Minimum Frequency	50 Hz
Model	Simran THG-300
Mounting Type	Portable
Part Number	THG-300
Power Source	AC
Specification Met	CE
UPC	810128011228

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