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The Business Lighting Experts

UltraGrow Electronic Ballast for 400W Grow Lamp

SKU: UG-EB400 | Ordering Code: UG-EB400  | UPC: 816142020642

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Product Highlights

  • Ignites one Metal Halide/High Pressure Sodium lamp

UltraGrow 400 Watt Electronic High Pressure Sodium/Metal Halide Ballast  

Lamp not included.

  • Dual Receptacle
  • 120V power cord included
  • Dual Input Voltage 120V/240V
  • Dimmable: Max output, 100%, 75%, & 50%
  • Compatible with High Pressure Sodium and Metal Halide Lamps
  • Three Year Limited Warranty
  • UL listed
Full Specs



Input Volts


Input Watts


Number of Lamps

Ballast Type

Ballast Type

Magnetic ballasts are a legacy technology and use inductance to transform the line voltage to the voltage required to "fire" or excite the gasses in a lamp. Electronic ballasts use a variety of starting methods, and are more efficient than magnetic ballasts in converting input power to the proper lamp power and operate fluorescent lamps at higher frequencies, resulting in an overall lamp-ballast system – increasing efficacy 15% to 20% over a magnetic equivalent.
Length (in)

Length (in)

Also referred to as "Maximum Overall Length" (MOL). For light bulbs, it measures the length of a light bulb, from the top of the bulb to the bottom of the base or pins and is typically expressed in inches. For light fixtures and ballasts, it applies to the total horizontal length of the item.
Width (in)

Width (in)

For fixtures and ballasts, width is the measurement of the total horizontal distance from left to right of the product in inches.
Height (in)

Height (in)

For ballasts and fixtures, height is the measurement of total vertical distance from the top of the product to the bottom expressed in inches.

Lamps by Wattage



3 year limited
Ballast Lamp Type

Ballast Lamp Type

The type of bulb the ballast can fire.
Metal Halide/High Pressure Sodium


Dimming ballasts provide dimming capability when used with an appropriate controller and lamp.


Indicates whether a bulb can be dimmed in conjunction with a suitable dimmer control.
50% / 75% / 100%