Lumatek 400W 120/240V Dimmable / Multi-Wattage (250W, 400W) Ballast

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This item has been discontinued.


Kit includes Lumatek 250W/400W Multi-Wattage, Dimmable, Ballast and 15-foot Lumatek Quick-Disconnect Lamp Cord

Lumatek 400 Watt 120V/240V Multi-Wattage Ballast

  • Dimmable Electronic Ballast
  • Dual-Voltage - The only E-Ballast with the same light output on 120V or 240V
  • Multi-Wattage – Powers 250W, 400W and HQI Lamps
  • The Super Lumens setting on the 400 Watt Ballast provides 10% MORE Light!
The Lumatek Digital Ballast is the brightest ballast in the industry. Light meter readings indicate that the Lumatek ballast is up to 27% brighter than common core and coil magnetic ballasts. The Lumatek is 10-15% brighter than other brands of digital ballast on the market.

Over time, core and coil ballasts will degrade, become louder, use more electricity, and produce more heat, while the lumen output declines. Digital ballasts maintain lumen output and efficiency over the life of the unit. The output of magnetic ballasts degrades over time and can fluctuate by up to 10% during a 12 hour cycle. Digital ballasts produce a constant output without any fluctuation.

Magnetic ballasts waste up to 75 watts to convert the electricity, whereas Lumatek sends the FULL 250 watts to the bulb, lighting it to its fullest potential. The Lumatek achieves superior light meter readings in comparison with other digital ballasts on the market through using microprocessors to detect the precise type of lamp used and accordingly supply the correct power. Some lamps are able to use slightly more than 250 watts. The Lumatek ballast will detect this difference and increase output accordingly.

Electronic Ballast vs E-Ballast
The Lumatek ballast is an E-ballast, unlike other brands on the market, which are actually electronic ballasts. E-ballasts use a microprocessor similar to a component found in a personal computer. This microprocessor allows the E-ballast to run either halide or sodium lamps, to switch between 50 and 60 hertz, to make adjustments for the type of bulb it is running, and even to compensate for degraded lamps by increasing its output. Electronic ballasts have a constant output and cannot make adjustments or changes. They will light a MH lamp; but quickly cause it to degrade, thus shortening the lamp`s lifespan.

Lumatek ballasts are programmed to allow for a `soft start` and do not require an initial power surge to start the ballast. This allows end users to start multiple ballasts simultaneously without blowing a breaker. The ballast will also detect a short in the wiring or a defective lamp. It simply shuts itself off, letting the user know that something is wrong. This should be kept in mind if you have a customer whose ballast keeps shutting down. In most cases, there is a problem with the output wiring.

Surface Temperatures
All digital ballasts produce the same amount of heat due to the total heat output. Do not be fooled by inferior units that use fans. These fans do not make the units run cooler. They simply exhaust the heat into the room. Each unit is tested at the factory for 12 hours with the lamp 6 inches from the unit. We are currently testing a new Mosfet that will lower the running temperature of the 120v unit. The Mosfet is the power supply circuit. It transforms the input electricity to the correct current and voltage for the ballast. This is the most important part of the electronic ballast and makes a huge performance difference.

RF Shielded Output Cord
The Lumatek ballast comes with an attached 15ft. RF shielded output cord. Competing brands of digital ballasts which do not employ shielded cords can seriously disrupt radio and satellite TV signals for up to 50 yards. This interference may also disrupt the operation of pH equipment. The Lumatek ballast, if properly connected, will have minimal RF interference at less than 5 ft. and will not interfere with pH equipment. In order to ensure maximum RF shielding, the output cord must be wired directly to the socket. If the ballast is connected to an existing unshielded wire, it will cause radio and satellite television interference. Both ground wires should be grounded to the socket set for maximum RF interference suppression. If it is necessary to extend the output cord further than the 15ft. supplied, the customer should purchase RF shielded wire to lengthen the output cord.

Warranty Information
Lumatek offers the best warranty in the industry, 3 - year replacement and 2 - year pro-rated. Lumatek will replace any defective units with brand new units for 3 years from the date of purchase. Please retain the original receipt from the place of purchase. A copy is required for all warranty issues. Also, these units should not have been modified or physically damaged. During the fourth and fifth year, Lumatek will supply the customer a pro-rated replacement ballast.

Market Confusion

There are several Lumatek look-alikes on the market. Do not assume that these have the same exclusive quantity and performance as the Lumatek. They typically use inferior components and technology and are not true E-ballasts.

The Lumatek Ballast is the brightest in the industry. Light meter readings indicate the Lumatek is up to 27% brighter than common magnetic ballasts and 10 - 15% brighter than competing electronic ballasts. Over time, magnetic ballasts degrade, become louder, use more electricity, and produce more heat, while the lumen output declines. Digital ballasts do not degrade and maintain their lumen output and efficiency over the life of the unit.

The Lumatek is not just your standard electronic ballast, but is a more advanced E-Ballast. What is the difference? E-Ballasts use a micro-processor similar to your home computer. This micro-processor allows the E-Ballast to run halide or sodium lamps, make adjustments based on the type of lamp it is running, and will even compensate for degrading lamps by increasing output. Electronic ballasts have a constant output and cannot make adjustments or changes. There are plenty of other digital ballasts on the market, do not assume they are all the same. Typically they use inferior components and are not true E-Ballasts.

The Lumatek is programmed for a `soft-start` and does not require an initial surge of power to light the lamp. This increases the lamp life and allows the end user to start multiple ballasts at the same time without tripping breakers. To ensure safe operation, the Lumatek is programmed to automatically shut off in case of a short in wiring or a faulty or missing lamp.

The Lumatek uses a resin-sealed case for completely silent operation without a noisy fan. Each unit is burned in at the factory for twelve hours to ensure maximum reliability. The Lumatek comes with a 15ft. RF shielded output cord. Competing brands of digital ballasts not using shielded cords can disrupt radio or satellite signals for up to 50 yards. The same interference can also be experienced with pH monitoring equipment. The Lumatek ballast, if properly connected, will have minimal RF interference (less than 5 ft.) and will not interfere with pH monitoring equipment.

Manufacturer Info

The best Electronic Ballasts money can buy...
More power, more lumens more blooms......

Lumatek is the worlds leading supplier of Electronic Ballasts to horticulture. With the arrival of Electronic Ballasts, a technological revolution has taken place in energy efficiency for HID lighting. This replacement of magnetic ballasts (a technology more than 100 years old) with electronic HID ballasts is because of the proven efficiency gains. Tests have shown that Lumatek ballasts are up to 30% brighter than some old style magnetic ballasts. Independent laboratory tests have proven that Lumatek ballasts are more efficient than any magnetic ballast known to Lumatek. This means more lumens are produced per watt of energy consumed.

Lumatek is the number one supplier of Electronic Ballast to the hydroponics and horticultural industries worldwide, and is proudly available in at least 13 countries. Lumatek products are sold into government research facilities, major nurseries, top universities and numerous publicly traded companies. This makes the Lumatek range the most proven product in the market, in addition we have the industries best warranty with 5 years covered (3 years full and two years pro-rated).

Lumatek Electronic Ballasts: proven technology

15 Reviews



Experience Level: Expert

Love it!!

I actually have 4 of these ballast and as I replace my older Hamiltons .... One by one I'm Replacing with the lumatek 400watt ... I've been very happy so far run it with the radium bulb on hqi gives off the nicest crisp blue ever and all sps corals growing and showing great color

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Experience Level: Intermediate

Great Buy

I already had one on for about 4-5 months when I decided to switch out my T-5's and add another MH. I had done so well with my first Lumatek that I decided to go with the same one again. They have a great design, easy to operate and understand and it's plug an play capability makes it dummy proof. It also does not run as hot as other ballast out there, which is a good thing in this hobby. Overall you can buy this product with confidence.

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Experience Level: Intermediate

Great Product

I originally had 2 Lumatek electronic ballasts, not digital. I replaced one with one like this about 4 years ago. It has performed flawlessly. This is my second ballast like this one, since I am running both MH and HPS lights. I like the dual light feature so I can use either MH or HPS. I expect I will get good service from this one, also. I like the 5 year warranty.

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Experience Level: Expert

All units failed after 3 years

I purchase 4 of the 400 watt mh ballast a little less than 4 years ago. They worked great but then last summer 1 unit failed. Then another one a little over a month later. Since it was past 3 years the warranty for years 4 and 5 is too purchase a new one from the manufacturer at a reduced price. So I bought two more at the reduced price and they are working good. But now the other two older ones have failed in the last 3 months. I am hesitant to buy 2 more the warranty price since all units failed before 4 years of service. I wrote an email to te company askig about possible defective units but I received no reply. I also have 4 coral vue running on the same system/location that are about the same age or older, I have a 600 gallon reef tank, so I know the failures are related to this manufacturer. Maybe whatever the problem was is fixed now but since They didn't answer my email I don't know that so I am replacing the last two failed units with coral vue since I have not had a problem with those. I won't know if the new lumateks I got last summer are ok until they last ten years like they should.

4 out of 4 found this review helpful

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Experience Level: Intermediate

Lumatek Ballast

I have been using Lumatek Ballast's for years. I am always very pleased with their products and this time was no different. It was packed really well and it is working great! The only thing I wish was different is that it is not plug and play like the old ballast's were. I had to wire it into my light. The old lumatek ballast that I had to replace my light plugged right into it. SO all I had to do was plug the ballast into the wall and plug my light right into the ballast NO WIRING.Not everyone is an electrition. Because of that is why I rate it 3.5 stars.

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Experience Level: Expert

So far, So good.

I bought these to replace my 400W Blueline ballasts. Head to head, they seem to have higher light output than the blue line.

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Experience Level: Intermediate


I needed two; had to return one; unit was bad right out of the box. When it's on works great.

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Danny from Indiana


Experience Level: Expert

250w/ 400w Dimmable Elec- Ball

So far so good, I am really happy with this ballast. I currently have 3 250w over my 180g Tank and one of my old ballasts was acting up so I decided to buy the Lumatek... I do not regret it at all it definitely powers my light better than the other 2 ballast (same bulbs). I am saving up to buy the other two that I need to replace. Two more things I love about this ballast is that i can always upgrade to a 400W bulb if I wants since it has the option to set as 250w/250whqi/400w/400whqi (thats awesome) also its warm only to the touch not hot at all and does not burn me so that's also another plus....love it! Thanks, Danny

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Experience Level: Intermediate

plug and play

this was a replacement for a catalina light, one of the electronic ballasts went out, decided to try this one, no re wiring required, just plugged it in with the existing wires to the old ballast, its a fairly standard mh plug, had the same plugs on a bunch of hamilton bimini's in the past. does burn the bulb a tad bit brighter than the other bulbs all the same age but with no visual kelvin difference, it does seem that you can change the wattage switch while running but there is nothing that it comes with that says you can or cant. probably not good for the bulbs but a great feature. i will be replacing the other 3 ballasts i have eventually with this product i am so impressed with this ballast.

0 out of 1 found this review helpful

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Experience Level: Expert

Great ballast with versatility

I haven't had any problems with this ballast so far. Been running it for over a year.

4 out of 4 found this review helpful

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