400w ballast
400w ballast for sale on Ireland's largest auction and classifieds sites
Omega black 600w - omega, - £34.99
There also need • Change bulb any • Setting 600w digital - Free postage - New and Used
There also need • Change bulb any • Setting 600w digital - Free postage - New and Used
600w lumii black electronic - 600w, - £39.75
Dimmable digital ballast • 600w lumii black • 1000w 400v electronic - Free postage - New and Used
Dimmable digital ballast • 600w lumii black • 1000w 400v electronic - Free postage - New and Used
New omega 600w - omega, 250w - £21.50
New omega 600w • Dimmable digital ballast • Black use hps - Free postage - New and Used
New omega 600w • Dimmable digital ballast • Black use hps - Free postage - New and Used
Ballast plastic 250w 400w 600w - ballast, - £24.99
Available 250w 400w • 600w this increased • Output does not - Free postage - New and Used
Available 250w 400w • 600w this increased • Output does not - Free postage - New and Used
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Omega black 600 watt - omega, - £29.95
- Free postage - New and Used
- Free postage - New and Used
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48 listings · from £3.84 · avg £46.37
⚠️ These listings were last updated more than 109 days ago.
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Browse 48 400w ballast listings currently in our index. Prices range from £3.84 to £129.95, with an average of £46.37. Whether you are hunting for a bargain or looking for a top-spec model, the selection below covers all price points — new, used and refurbished. More about 400w ballast →
Varidrive 600w digital - varidrive, - £3.84
Varidrive 600w digital • Dimmable ballast pack • Hydroponics systems offering - Free postage - New and Used
Varidrive 600w digital • Dimmable ballast pack • Hydroponics systems offering - Free postage - New and Used
600w lumii black electronic - 600w, - £44.94
Lumii black 600w • Digital dimmable ballast • Has arrived holland - Free postage - New and Used
Lumii black 600w • Digital dimmable ballast • Has arrived holland - Free postage - New and Used
Comet black 600 - comet, watt - £9.99
Comet black 600 • Watt dimmable digital • Ballast 600w 400w - Free postage - New and Used
Comet black 600 • Watt dimmable digital • Ballast 600w 400w - Free postage - New and Used
Maxibright digital ballast - maxibright, - £25.66
400w digital ballast • From maxibright - Free postage - New and Used
400w digital ballast • From maxibright - Free postage - New and Used
Lumii black 600w dimmable - black, - £39.95
Lumii black dimmable • Digital ballast incredible • Highly adaptable product - Free postage - New and Used
Lumii black dimmable • Digital ballast incredible • Highly adaptable product - Free postage - New and Used
Elite 600 watt - , dimmable - £19.00
Sold seen - Free postage - New and Used
Sold seen - Free postage - New and Used
Lumatek 250w 400w - 250w, quality - £88.65
Lumatek electronic digital • Ballasts are most • Advanced lighting solution - Free postage - New and Used
Lumatek electronic digital • Ballasts are most • Advanced lighting solution - Free postage - New and Used
Lumatek 600w digital ballast - lumatek, - £104.99
Lumatek dimmable digital • Ballasts are great • Choice lighting your - Free postage - New and Used
Lumatek dimmable digital • Ballasts are great • Choice lighting your - Free postage - New and Used
Lumatek 400w electronic - 400w, - £10.80
Lumatek 400w electronic • Ballast promote faster • Growth bigger harvests - Free postage - New and Used
Lumatek 400w electronic • Ballast promote faster • Growth bigger harvests - Free postage - New and Used
Omega black 600 - black, - £29.81
- Free postage - New and Used
- Free postage - New and Used
Elite 600 watt dimmable - watt, - £58.07
Dimmable 250w silent • Running - Free postage - New and Used
Dimmable 250w silent • Running - Free postage - New and Used
Omega black 600w - 600w, digital - £15.00
Omega black 600w • Digital dimmable ballast • Versatile reliable option - Free postage - New and Used
Omega black 600w • Digital dimmable ballast • Versatile reliable option - Free postage - New and Used
600w electronic dimmable - 600w, - £34.99
High quality - Free postage - New and Used
High quality - Free postage - New and Used
Omega 250w 400w - omega, 600w - £24.99
Available 250w 400w • 600w hid lighting • Professionals choice maximising - Free postage - New and Used
Available 250w 400w • 600w hid lighting • Professionals choice maximising - Free postage - New and Used
Omega black 600 watt - watt, dimmable - £10.00
Omega black 600 • Watt dimmable digital • Ballast high quality - Free postage - New and Used
Omega black 600 • Watt dimmable digital • Ballast high quality - Free postage - New and Used
Omega black 600 watt - black, dimmable - £34.95
Dimmable settings 250w • 400w 600w 660w • There also need - Free postage - New and Used
Dimmable settings 250w • 400w 600w 660w • There also need - Free postage - New and Used
Vossloh schwabe q400 612 - schwabe, - £71.40
Vossloh schwabe q400.612 • 167330 - Free postage - New and Used
Vossloh schwabe q400.612 • 167330 - Free postage - New and Used
Maxibright xpert 400w power - 400w, - £30.00
Thermal cut out • 400w models precision • Wound ballast - Free postage - New and Used
Thermal cut out • 400w models precision • Wound ballast - Free postage - New and Used
Maxibright varidrive 600w - maxibright, - £49.95
Maxibright varidrive 600w • Dimmable digital ballast • About camgrow hydroponics - Free postage - New and Used
Maxibright varidrive 600w • Dimmable digital ballast • About camgrow hydroponics - Free postage - New and Used
New boxed omega 600w 400w - omega, - £20.00
250w 400w 600w • Certified switchable between • 660w maximum yields - Free postage - New and Used
250w 400w 600w • Certified switchable between • 660w maximum yields - Free postage - New and Used
Maxibright varidrive 600w - maxibright, - £64.99
Maxibright varidrive ballast • Another premium quality • Produced market leaders - Free postage - New and Used
Maxibright varidrive ballast • Another premium quality • Produced market leaders - Free postage - New and Used
Horti king pro - king, electric - £10.58
Grow lights • Horti king pro • Electric ballast digital - Free postage - New and Used
Grow lights • Horti king pro • Electric ballast digital - Free postage - New and Used
Maxibright varidrive 600w - maxibright, - £64.95
Maxibright varidrive 600w • Dimmable digital ballast • Compact design save - Free postage - New and Used
Maxibright varidrive 600w • Dimmable digital ballast • Compact design save - Free postage - New and Used
Century grow systems 400w - grow, - £28.00
- Free postage - New and Used
- Free postage - New and Used
Maxibright pro select 600w - select, - £98.99
Maxibright pro select • Ballast another premium • Produced market leaders - Free postage - New and Used
Maxibright pro select • Ballast another premium • Produced market leaders - Free postage - New and Used
Comet 600w 400w - comet, - £26.70
Upgrade your grow • Setup comet 600w • Digital dimmable ballast - Free postage - New and Used
Upgrade your grow • Setup comet 600w • Digital dimmable ballast - Free postage - New and Used
Omega 250w 400w 600w metal - omega, - £26.99
Its powerful 600w • Output provides optimal • Lighting conditions any - Free postage - New and Used
Its powerful 600w • Output provides optimal • Lighting conditions any - Free postage - New and Used
Maxibright varidrive 600w - maxibright, - £16.14
Four adjustable power • Varidrive 600w ballast • Settings continuous flexibility - Free postage - New and Used
Four adjustable power • Varidrive 600w ballast • Settings continuous flexibility - Free postage - New and Used
Lumatek ballast dimmable - -, - £129.95
Latest high output • 600w horticultural ballasts • From lumatek are - Free postage - New and Used
Latest high output • 600w horticultural ballasts • From lumatek are - Free postage - New and Used
Maxibright 400w compact - 400w, - £19.36
- Free postage - New and Used
- Free postage - New and Used
Lumii black electronic - lumii, - £21.45
Lumii black electronic • Dimmable ballast 250w • 400w 600w 660w - Free postage - New and Used
Lumii black electronic • Dimmable ballast 250w • 400w 600w 660w - Free postage - New and Used
660w digital dimmable ballast - digital, - £49.99
Pulsar 660w digital • Ballast has set • Technology user friendly - Free postage - New and Used
Pulsar 660w digital • Ballast has set • Technology user friendly - Free postage - New and Used
Lumii digital 600w - lumii, - £79.99
Lumii digita eco • Ballast one quietest • Ballasts market hum - Free postage - New and Used
Lumii digita eco • Ballast one quietest • Ballasts market hum - Free postage - New and Used
600w lumii black electronic - lumii, - £29.82
Perfect condition some • Them brand new • Boxed - Free postage - New and Used
Perfect condition some • Them brand new • Boxed - Free postage - New and Used
Growlush 400w energy - growlush, saving - £119.30
Growlush 400w energy • Saving digital electronic • Ballast high quality - Free postage - New and Used
Growlush 400w energy • Saving digital electronic • Ballast high quality - Free postage - New and Used
Maxibright varidrive 600w - varidrive, - £64.95
Maxibright varidrive 600w • Dimmable digital ballast • Compact design save - Free postage - New and Used
Maxibright varidrive 600w • Dimmable digital ballast • Compact design save - Free postage - New and Used
Maxibright varidrive 600w - maxibright, - £49.95
Maxibright varidrive 600w • Dimmable digital ballast • About camgrow hydroponics - Free postage - New and Used
Maxibright varidrive 600w • Dimmable digital ballast • About camgrow hydroponics - Free postage - New and Used
Lumatek twin dimmable - twin, - £129.95
250w 400w 600w • 240v digital ballast • 660w output power - Free postage - New and Used
250w 400w 600w • 240v digital ballast • 660w output power - Free postage - New and Used
Lumatek 400w watt - 400w, - £99.99
Leading way digital • Ballast lumatek has • Gone dimmable this - Free postage - New and Used
Leading way digital • Ballast lumatek has • Gone dimmable this - Free postage - New and Used
Lumatek electronic ballast - lumatek, - £78.70
Best ballasts around • Low electricity consumption • More control over - Free postage - New and Used
Best ballasts around • Low electricity consumption • More control over - Free postage - New and Used
Lumatek 400w digital ballast - lumatek, - £10.80
Lumatek 400w digital • Ballast grow light • Hydroponics - Free postage - New and Used
Lumatek 400w digital • Ballast grow light • Hydroponics - Free postage - New and Used
Omega black 600w - black, digital - £52.50
Dimmable settings 250w • 400w 600w 660w • There alsono need - Free postage - New and Used
Dimmable settings 250w • 400w 600w 660w • There alsono need - Free postage - New and Used
Lumatek 400w digital - 4, - £73.50
Lumatek 400w ballast • Super lumen switch • All good working - Free postage - New and Used
Lumatek 400w ballast • Super lumen switch • All good working - Free postage - New and Used
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Everything you need to know about 400w ballast
Whether you are looking for a brand-new or second-hand 400w ballast, eBay offers one of the largest selections available online. With 48 active listings at the time of this page's last update, you have plenty of choice across different conditions, sellers and price points. The cheapest option currently starts at £3.84, while premium listings can reach £129.95 — giving you a wide budget spread to work with. The average price of £46.37 can serve as a useful benchmark: listings below this tend to be used or auction-style, while those above often include extra accessories, warranties, or are sold by professional sellers with high feedback scores. Always check the seller's feedback rating and return policy before committing to a purchase. If you need the item quickly, filter by "Buy It Now" to avoid the uncertainty of auctions. For used items, look closely at the condition description and photos — terms like "good", "very good" and "like new" can mean very different things depending on the seller.