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The Best 400 watt hps ballast of 2022 – Reviewed and Top Rated

After hours researching and comparing all models on the market, we find out the Best 400 watt hps ballast of 2022. Check our ranking below.

2,263 Reviews Scanned

Rank No. #1
iPower GLBLST400D Horticulture 400 Watt Digital Dimmable Electronic Hydroponic HPS MH Grow Light, 400W Ballast
  • Support dual voltage input 120V/240V. Dimmable options: 50%, 75%, 100%. Watt option: 150w/250w/400w/Super lumens (110%)
  • High frequency output results in less power loss, 30% more lumens than magnetic ballasts for improved yields
  • Automatically converts between HPS and MH light bulbs by micro-chip programming; Fast lamp ignition by lighting up the bulbs within 1-2 mins max; Stable voltage output ensures flicker free light
  • Ultra-safety: Protection against short circuit, Power surge, ignition failure, overheat, end-of bulb-life; Built-in cooling fan and graduating fin designed to minimize ballast temperature
  • Package included: 1-pack 400 watt digital dimmable electronic ballast included
Rank No. #3
Yescom 400W HPS MH Electronic Dimmable Ballast for Grow Light Bulb Lamp w/Cooling Fan
  • [Compatibility]: 9 13/16" x 4 5/16" x 2 3/4" 400W electronic ballast is designed for connecting with light to maintain the working current and help the light to provide stable brightness and increase the service life, fit for HPS & MH grow light and metal halide & high-pressure sodium bulbs to promote the growth of indoor plants
  • [Powerful Performance]: Ballast features power output options of 150W,250W,400W and super lumens for ensuring the light to adjust the brightness and create optimal lighting environment, super lumens for achieving max. power up to 430W
  • [High Efficiency & Stable]: Compared with magnetic ballasts, electronic ballasts feature energy-saving design to reduce input power more than 10% and help lights to provide stable lighting brightness without flickering
  • [Durable & Cooling Design]: Strong aluminum construction for providing sturdiness, rust & corrosion resistance, can be used for a long time; cooling fan and aluminum shell for offering good heat dissipation and prolonging the service life
  • [Safe Protection]: Overheating protection for stopping working when the operation temperature reaches to the maximum value, open/short circuit protection and built-in fuse for protecting critical components from circuit failure and ensuring safe running
Rank No. #4
TOPHORT 400 Watts Digital Dimmable Electronic Ballast for HPS MH Grow Light Bulb Lamp (400W, Blue)
  • 【Specification】:Rating input current 2.89,Start current 0.96,Operating temperature -20~50,Waterproof level IP65, Net weight <3 KG.
  • 【Suitable for MH and HPS】:TOPHORT electronic dimmable ballast compatible with both MH and HPS bulbs,120V and 240V power supplies.
  • 【Stable Output Voltage】:High-frequency output results in less power loss (50/60Hz Frequency).
  • 【Super-Safety】:TOPHORT digital ballasts are tuned for minimal total harmonic distortion (THD%) 99% Power factors replaceable outset fuse by input terminal for short circuit protection short circuit protection by automatic power shut off for ultimate safety fast lamp ignition by lighting up the bulbs within 1-3mins max.
  • 【Guarantee Assurance】:Our TOPHORT HPS grow light ballasts are UL Certified and come with a 2-year warranty against manufacturer defects. If your order is more than one month, please don't contact Amazon, contact the seller directly, we will provide you with warranty service.
Rank No. #5
iPower GLSETX400DHMWING20 Horticulture 400 Watt HPS MH Digital Dimmable Ballast Grow Light System Kits Wing Reflector Hood Set, 400W
  • 400W Digital Dimmable Electronic Ballast: Support 120V/240V Input; Dimmable Options: 50%, 75%, 100%; 8 Feet heavy-duty power cord included; Stable power output ensure flicker free light
  • 1 x 400W Super HPS bulb 2100K; 1 x 400W MH bulb 6000K; optimized Spectrum and high PAR (photosynthetic active radiation) to promote healthy plant growth and soonest flourish
  • 1 x pair of 8-ft adjustable ratchet clip hanger rope: hold up to 150 lbs
  • 19-inch Wing Reflector: up to 4' x 4' light coverage; Built-in 15 feet heavy duty lamp cord with E39 Ceramic Mogul Socket and standard Hydroponic S-Plug; highly 95% reflective textured German aluminum maximizes the light reflected to the plants
  • This system will generate too much heat to be used in an enclosed area without ventilation. Adequate ventilation is required for all iPower grow light systems. We recommend the use of an iPower inline fan
Rank No. #6
eGrow 400 Watt Digital Grow Light Ballast for HPS MH Bulbs, Indoor Grow Lamps, Horticulture
  • For use with 400 Watt HID (HPS/MH) grow light bulbs | multi-volt input 120V/240V | 8 foot heavy-duty grounded power cord included
  • High frequency lamp drive provides more lumens than magnetic ballasts for improved yields | Soft start ignition improves power efficiency by 15% or more over magnetic
  • Automatically adjusts for HPS and MH light bulbs | Fast lamp ignition | Stable voltage output | Virtually silent operation
  • Built-in cooling fan and integrated heat sink housing minimize ballast component temperatures for extended life and performance
  • Measures: 8.625" x 4" x 2.75" | Plug Type: NEMA 5-15 (120v Grounded Cord) | Standard-type socket cord receptacle
Rank No. #7
iPower 400 Watt HPS MH Digital Dimmable Ballast Grow Light System Kits Horticulture Wing Reflector Hood Set, 400W, with Timer and Hanger Rope
  • 1 x 400w super HPS bulb 2100K, 1 x 400w MH bulb 6000K: Optimized spectrum and high PAR (Photosynthetic Active Radiation) to promote healthy plant growth and soonest flourish
  • 400w digital dimmable electronic ballast: Support 120V/240V Input; dimmable options: 50%, 75%, 100%; 8 feet heavy-duty power cord included; Stable power output ensure flicker free light
  • 19-inch wing reflector: Up to 4' x 4' light coverage; built-in 15 feet heavy duty lamp cord with E39 ceramic mogul socket and standard hydroponic S-plug; highly 95% reflective textured German aluminum maximizes the light reflected to the plants
  • 1 x pair of 8-ft adjustable ratchet clip hanger rope: Hold up to 150 lbs; 24-hour plug-in mechanical timer: 15 minutes increments
  • Caution: This system will generate too much heat to be used in an enclosed area without ventilation. Adequate ventilation is required for all iPower grow light systems. We recommend the use of an iPower inline fan
Rank No. #8
HTG Supply eGrow 400w HPS Grow Light Kit | Complete Digital Ballast, HPS Bulb, and Fixture System
  • Electrical: 400 watts, approx. 3.33 amps @ 120v | System Includes: 400w eGrow Digital ballast, 400w Horticultural-Grade HPS Bulb, Ultra Reflective 4-Sided Hood, 15' Remote Socket Set, 8' Grounded Power Cord, Hi-Low Reflector Hangers, and 120v Single Outlet Timer
  • High frequency digital ballst provides more lumens than magnetic ballasts for improved yields | Soft start ignition improves power efficiency by 15% or more over magnetic
  • 400-watt high pressure sodium (HPS) bulb provides enhanced horticultural spectrum & 55,000 lumen output
  • Suggested garden coverage area: up to 4' x 4'
  • Ballast measures: 8.625" x 4" x 2.75" ; Reflector measures: 16" long x 13" wide x 6" deep - hanger attachment hardware included
Rank No. #9
iPower GLSETX400DHMAC6 Horticulture 400 Watt HPS MH Digital Dimmable Ballast Grow Light System Kits Air Cooled Reflector Hood Set, 400W
  • 400W digital dimmable electronic ballast: Support 120V/240V input; dimmable options: 50%, 75%, 100%; 8 feet heavy-duty power cord included; Stable power output ensure flicker free light
  • 1 x 400W super HPS bulb 2100K; 1 x 400W MH bulb 6000K: Optimized spectrum and high PAR (Photosynthetic Active Radiation) to promote healthy plant growth and soonest flourish
  • 1 x pair of 8-ft adjustable ratchet clip hanger rope: hold up to 150 lbs; 24-hour plug-in mechanical timer: 15 minutes increments
  • 6-inch air cooled hood reflector: Up to 4' x 4' light coverage; Built-in 15 feet heavy duty lamp cord with E39 ceramic socket and standard hydroponic S-Plug; highly 95% reflective textured German aluminum maximizes the light reflected to the plants
  • Caution: This system will generate too much heat to be used in an enclosed area without ventilation. Adequate ventilation is required for all iPower grow light systems. We recommend the use of an iPower inline fan
Rank No. #10
VIVOSUN Horticulture 600 watt Dimmable Digital Electronic Ballast for Hydroponic HPS MH Grow Light, UL Listed & Soft Start Protection (Space Gray)
  • Quality Assurance: UL listed, 3-year warranty, professional after-sales service
  • Spec.: Runs on 120 - 240V, 50/60Hz, 8ft 120V power cord
  • Watt Option: 250w / 400w / 600w / Super lumens (110%)
  • Protection System: Overheating protection, end-of-bulb-life protection, short-circuit protection, ignition-failure protection
  • Notice: Set ballast to the same watt option as the matched bulb before started

Last update on 2022-12-24 / Affiliate links / Images from Amazon Product Advertising API

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We provide an 400 watt hps ballast buying guide, and the information is totally objective and authentic. We employ both AI and big data in proofreading the collected information. How did we create this buying guide? We did it using a custom-created selection of algorithms that lets us manifest a top-10 list of the best available 400 watt hps ballast currently available on the market.

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  1. Brand Value: Every brand of 400 watt hps ballast has a value all its own. Most brands offer some sort of unique selling proposition that’s supposed to bring something different to the table than their competitors.
  2. Features: What bells and whistles matter for an 400 watt hps ballast?
  3. Specifications: How powerful they are can be measured.
  4. Product Value: This simply is how much bang for the buck you get from your 400 watt hps ballast.
  5. Customer Ratings: Number ratings grade 400 watt hps ballast objectively.
  6. Customer Reviews: Closely related to ratings, these paragraphs give you first-hand and detailed information from real-world users about their 400 watt hps ballast.
  7. Product Quality: You don’t always get what you pay for with an 400 watt hps ballast, sometimes less, and sometimes more.
  8. Product Reliability: How sturdy and durable an 400 watt hps ballast is should be an indication of how long it will work out for you.

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FAQ:

Q: What size tent for a 400W HPS?

A: Sun System Digital 400 Complete – Get a 400W MH bulb and 400W HPS bulb with this setup Grow Space. Grow Tent Recommended Sizes. 2’x4’x6′ (bare minimum viable space) – An example is the TopoLite 48″x24″x72″ Grow Tent 3’x3’x6′ – An example is the CoolGrows 36″x36″x72″ Grow Tent; 4’x4’x6.5′ (recommended) – an example is the CoolGrows 48″x48″x80″ Grow …

Q: How many plants under 400W HPS?

A: You could EASILY do 16 plants under a 400w HPS. Click to see full answer. Thereof, how high should a 400w HPS be from plants? According to Jorge Cervantes a 400W HPS puts out 50,000 lumens at one foot and at two feet it puts out 12,500 lumens. He recommends between 12 and 24 inches.

Q: How many lumens does a 400 watt HPS produce?

A: 400-watt HPS bulbs provide about 44000 and 50000 lumens of light. 600-watt HPS bulbs provide 90000 and 96000 lumens of light. 750-watt HPS bulbs provide about 110000 lumens of light.

Q: How many amps does a 400 watt HPS light use?

A: Watts/ Volts = Amps. For example your 2x 600 watts wouldbe 1200 watts. Divide 1200 by 120 volts and you are pulling 10 amps. How many amps does a 400 watt HPS use? 400 watts, that’s 400/120= amperes. 3 amps. Most household circuits are 20 amps.

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