Hera Lighting low voltage electronic transformers and dimmers

The Halogen and Xenon lights from Hera are low voltage, 12 volt. A transformer converts your household current from 120 volt down to 12 volt.

These transformers, dimmers, extension cables, and terminal block extenders are used with all Hera halogen and Xenon lights. The various lights are: ARF/ARFS, KB12, E-R1/E-S1, and XR1/XS1,. As well as all of Hera's older halogen lights of the past that are discontinued now.

This page is set up as a reference page for all the light systems using these transformers and dimmers, instead of showing all these graphics on every light page. That would make all the other pages too long if we did. It is also set up as a parts page for those looking for replacements. Our Hera Replacement Parts page is also long. So the transformers, dimmers, NV6 extension wires and terminal block extenders will be listed on this page.

  • Hera Fluorescent and LED technology DO NOT use these transformers and dimmers.
  • LED light power drivers and dimmers are shown on the LED power driver page.
  • All transformers and dimmers shown on this page are stocked by Eclectic-ware.

PLEASE NOTE that Hera transformer do have printed on them: 120V input, and 12V output. All the specs written out in the Hera catalog pages say 11.5 volt output. This increases transformer and light longevity when spikes occur.

Important history for those using this page for replacement transformers:
If you have a Hera brand transformer that says E60T or OMN60LT on it - THOSE ARE REALLY OLD. And yes, there are tons of them out there still working, and some that just died a few days prior to you finding this web page.

Around 2004, the E60T was replaced by the UE-E60FT, and the OMN60LT was replaced by the UC-60FT. The components functioned the same. The attached terminal block on each was the same. All halogen and Xenon lights worked from either transformer. All that changed was the shape and size, and the part numbers. Hera also came out with the UK-120TW transformer at that time too. It is a premium 120 watt transformer which allows up to 6 of the 20 watt halogen lights to operate from it.

Then some sad news, in August of 2015, Hera announced that they are discontinuing their halogen lights and the components that function with them. We sold out of the UE-E60FT transformers in 2016. The UC-60FT transformers sold out in March 2017. As of May 2017, we still have around 180 of the UK-120TW transformers in our stock, and Hera has approx. 150 left in their stock. That stock might last for the next couple of years. Hard to say.

So to review: if you have a Hera transformer that says E60T, OMN60LT, UE-E60FT, or UC-60FT, then you can use the UK-120TW in lieu of all of those. It is the only Hera 12 volt halogen transformer available now. It is okay to hook up only 2 or 3 lights to it if that is all you have. It will support 1 to 6 of the 20 watt halogen lights, or the Xenon lights.

Hera UK-120-TW transformer for low voltage halogen and xenon lights

part # HER-UK120TW @ $82.12 each (was $124, price reduced March 2017)
Click-here-to-order2 or you can call us at 813-633-7544, Florida, USA
As of May 30, 2018, we have 30 of the UK120TW transformers in our stock. They are going fast.

Hera UK-120TW specifications
The UK120TW ventilation space requirements. Note that the UK120TW has two of the NVK6 terminal blocks attached to the output end. You can operate up to 6 of the 20 watt halogen lights from it. If you have lights with 10 watt bulbs, those will work too. With terminal block extenders, technically up to 12 of the 10 watt halogen lights can operate from the UK120TW transformer.


Another solution we can offer for a 60 watt halogen 12 volt transformer: (for a limited time until they run out)

This is the Tresco 12 volt transformer. Part number TRE-ELT60CON . Really pay attention to the terminal block on it. It is NOT the same as the Hera NV6K connection terminal block. Thus Hera lights with their attached NV6K male/female pin connector will not push into it. But look at the picture, there are just two wires going into the terminal block. All the Hera transformers of the past are the same in respect to two wires going into the terminal block. If you want a 60 watt replacement transformer that will work with your Hera lights, SAVE THE TERMINAL BLOCK FROM YOUR OLD HERA TRANSFORMER. You can cut it off, splice it into the two wires on the Tresco transformer properly (proper wire crimps and sealing bare wires are essential to properness), and wa-lah you just adapted a transformer that will work and your lights are back on.

If by chance you do not have your old transformer and the terminal block is long gone, you can also get the Hera NVK6/4 terminal block extender and attach that to the Tresco transformer. If you are going to go to all of that work though, it would be worth spending about $10 more and just getting the UK-102TW transformer. It is an easier route.

Tresco 60 watt transformer
part # TRE-ELT60CON @ 62.41 each (note that it has an on/off roll switch in cord)
Click-here-to-order2 or you can call us at 813-633-7544, Florida, USA
As of May 2018, we just found out that the Tresco transformer is discontinued too. We have 24 left.


Close up of the label on the Tresco transformer.

Close up of the label on the Hera UC-60FT transformer.

This is to show you the size comparison of the Tresco transformer to that of the UC-60FT Hera transformer.



Now we will show the remainder of the Hera dimmers, cables, etc. Pricing for what follows will be farther down on the page in one convenient price grid.


Hera ETD1 and ETD1/TP electronic dimmers for low voltage halogen lights
Note: specs below. Touch pad not shown. It is round, about 2" in diameter, and charcoal black color.
Hera ETD1 specifications

Hera ERD1BL and ERD1WH rotary knob electronic dimmers for low voltage halogen lights
Note: specs below. Black comes with black knob. (White is no longer available.)
Hera ERD1 specifications

Hera NVK64 terminal block extender for electronic transformers

 ... Keep scrolling down. (just 2 more pictures to go)
Hera Lighting mounting examples - low voltage lights

Hera Lighting mounting examples halogen lights

What to order & How to order:

When ordering transformers with lights for new installations, take note of the maximum wattage for each: up to three 20 watt lights on a 60 watt transformer, and up to six on the 120 watt transformer, Most lights have attached lead wires. Extension cables are for the purpose of extending your lights farther away from the transformers. When using dimmers, your dimmer will plug into the wall first, and then transformers plug into the dimmer. Each dimmer has an extension cord type end coming off of it with three outlets on it. You can easily plug up to 3 transformers in to one dimmer. Dimmers are 300 watts and can handle up to 15 of the 20 watt lights. You do not have to run one dimmer per transformer. Multiple transformers can work from one dimmer, but then all are controlled simultaneously.

If you have questions about the transformers, dimmers, or cables, please call or e-mail us.

Click-here-to-order3 or you can call in orders to 813-633-7544, Florida, USA





(30 left & going fast)

120 watt Premium transformer with RFI (radio frequency interference suppressor) 12 volt, can connect 1 to 6 of the 20 watt lights to it.


item stocked by Eclectic-ware 

(24 left in stock)

Tresco 60 watt transformer (has a different terminal block on it than what the Hera products have)


item stocked by Eclectic-ware 


Electronic Touch Dimmer (ETD) for use with any of the three 12 volt transformers, 300 watt capacity, up to fifteen 20-watt lights


item stocked by Eclectic-ware 


Electronic Touch Dimmer (ETD) for use with any of the three 12 volt transformers, 300 watt capacity, comes with round black touch pad that you can mount where you like


item stocked by Eclectic-ware 


Electronic Rotary Dimmer (ERD) for use with any of the three 12 volt transformers, 300 watt capacity, up to fifteen 20-watt lights, BLACK w/ black knob


item stocked by Eclectic-ware 


20" extension cable, 500mm


item stocked by Eclectic-ware 


39" extension cable, 1000mm


item stocked by Eclectic-ware 


79" extension cable, 2000mm


item stocked by Eclectic-ware 


119" extension cable, 3000mm


item stocked by Eclectic-ware 


Terminal block extender, for use to connect up to 6 of the ten-watt lights to a 60 watt transformer. Does not increase the power output of the transformer, just increases the number of connecting ports.


item stocked by Eclectic-ware 

Click-here-to-order2 or you can call us at 813-633-7544, Florida, USA

Additional info / resources:
When using multiple transformers for larger light set ups, please do not mount them side by side . Allow 7 to 8 inches between them if you are trying to centralize them in one location. Hera transformers have burn out protection. If they start to overheat, they will turn themselves off, rather than just burning out and becoming useless. When mounted too close to each other, the heat from one could trick the other to turn off. So have some ventilation space around them.

They also have overload protection. 60 watt transformers can have a maximum load of 60 watts. The 120 watt has 120 watts maximum. You can run less lights on them, but not more. If you cut and splice wires and try to run 4 of the 20 watt lights on one 60 watt transformer, it will not work. Please remember that when ordering the correct number of transformers for the lights that you need.

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