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Lumatek Digital Ballast 400 Watt+Superlumens
The Lumatek Digital Ballast 400W Dimmable+Superlumens is the benchmark electronic ballast for mid-range HPS and MH grow lighting setups. Multi-watt capability covers 250W through 440W across four selectable power modes, with Super Lumens delivering a verified 10% output boost for HPS lamps at peak flowering. Weighing just 2.5kg, completely silent and resin-sealed, this microprocessor-controlled e-ballast maintains stable PAR levels as your lamp ages. Plug & play with 2m cable. Fast shipping to Belgium and beyond.
Lumatek Digital Ballast 400W Dimmable+Superlumens — The Benchmark HID Ballast for Serious Growers
The Lumatek Digital Ballast 400W Dimmable+Superlumens sits at the heart of countless high-performing indoor grow rooms — and for good reason. This microprocessor-controlled e-ballast delivers consistent, regulated output to HPS and MH lamps across four power settings, adapting to every phase of plant growth from vegetative to peak bloom. Compatible with both 250W and 400W lamp ratings, it offers genuine flexibility that fixed-output ballasts simply cannot match. Start with the Lumatek HPS 400W lamp for an optimally paired system.
Multi-Watt Range: 250W to 440W in Four Settings
Four selectable power modes define this ballast: 250W, 250W Super Lumens, 400W, and 400W Super Lumens. The Super Lumens setting pushes HPS output up by 10% — to approximately 440W — without changing the lamp, giving growers a targeted boost during the most demanding flowering weeks. The 250W settings allow you to run a 250W HPS or MH lamp when needed, making the 400W Dimmable a truly future-proof investment. All power transitions use Lumatek's soft-dim technology to ramp gradually, protecting lamp filaments from stress during changes. Note: Super Lumens mode is for HPS lamps only; MH lamps must be matched to their rated wattage.
PAR Stability Through Active Voltage Regulation
Conventional magnetic ballasts output a fixed voltage regardless of what the lamp or grid demands. The Lumatek 400W takes a different approach: its GIP multi-microprocessor system continuously monitors both grid voltage fluctuations and lamp degradation state, adjusting output in real time to compensate. This means your crop receives consistent PAR/PPF levels throughout the lamp's lifespan — not just when the lamp is new. Over a standard 6-12 month lamp cycle, this active regulation translates into more uniform growth and more predictable yields. For a complete turnkey setup, the 400W Lumatek + Adjust-A-Wing lighting set is an excellent choice.
Built Light, Built Quiet, Built Tough
At 2.5kg, the Lumatek 400W is light enough to mount anywhere without structural concerns. The resin-sealed aluminium housing keeps moisture and dust away from internal components — a critical consideration in high-humidity grow environments. There is no fan, no moving parts, and no audible noise whatsoever: this ballast operates in complete silence. Sequential smart-start manages inrush current on ignition, preventing breaker trips in shared electrical circuits. Every unit is factory burn-tested for 12 hours before shipment. Belgian growers can order today and receive fast delivery across Belgium from our dedicated growshop.
- Power settings: 250W – 250W SL – 400W – 400W Super Lumens (+10% HPS only)
- Compatible with 250W and 400W HPS and MH lamps
- GIP multi-microprocessor voltage regulation
- Weight: 2.5kg
- Completely silent — no fan, no noise
- Resin-sealed housing — moisture and dust resistant
- Soft-dim gradual power transitions
- Input voltage: 120–240 VAC / 50-60 Hz
- Plug & play — 2m cable included
- Full circuit protection: short circuit, over-temperature, over/low voltage, EMI suppression
What tent size does the Lumatek 400W digital ballast work best in?
The Lumatek 400W is most effective in grow tents of 80×80 cm to 100×100 cm. In Super Lumens mode the output reaches approximately 440W, which can extend coverage slightly. For tent footprints of 120×120 cm and above, a 600W ballast will deliver better canopy penetration and light uniformity across the grow area.
Can the Lumatek 400W Dimmable ballast run a 250W HPS lamp?
Yes. The Multi-Watt design means the Lumatek 400W Dimmable supports both 250W and 400W HPS and MH lamps. Set the power dial to 250W or 250W Super Lumens to correctly drive a 250W lamp. This flexibility makes the 400W Dimmable a long-term investment — you can run different lamp wattages on the same ballast as your setup evolves.
How long should I wait before re-striking a hot HPS lamp with a Lumatek ballast?
Always allow a hot HPS lamp to cool for 20–30 minutes before attempting to re-strike it. Hot re-strikes cause premature lumen degradation and significantly shorten lamp life. The Lumatek 400W's sequential smart-start manages inrush current safely on every cold ignition, but cannot compensate for the physics of re-striking a lamp that has not fully cooled.
Is the Lumatek 400W digital ballast more efficient than a 400W magnetic ballast?
Digital ballasts like the Lumatek 400W are measurably more efficient than magnetic equivalents. They convert a higher proportion of input power to usable light, waste less energy as heat, and maintain stable output as the lamp ages — something magnetic ballasts cannot do. Independent lux meter measurements have shown Lumatek digital units producing up to 30% more light than traditional ferro-magnetic ballasts at equivalent wattage.
