243 Stafford St.

Worcester, MA 01603

Tel. 1 (888) 455-2800

Fax 1.508.363.2900


The Business Lighting Experts

Universal Electronic Sign Ballast 120V to 277V for (4 to 6) T12, HO or T8, HO

SKU: ESB848-46 | Ordering Code: ESB848-46  | UPC: 768386252528

Sorry, this product is not available to purchase.

Product Highlights

  • Ignites up to six T8/T12 lamps

Universal Signa brand ELECTRONIC Instant Start Sign Ballast for 4 to 6 High Output T12 (8 to 48 Feet) or T8 (16 to 36 Feet) Fluorescent Lamps of 120-277 Voltage. Number of Lamps, Lamp Watts, & Lamp Lengths Vary by Application. LAMP(S) NOT INCLUDED.

  • Parallel lamp operation-if one lamp fails, other lamps remain lit keeping sign illuminated
  • Cold temperature starting down to -20F
  • UL "Type 2" cans outdoor rated for improved durability and resistance to rust
  • UL "HL" rated for hazardous locations
Full Specs


Universal Douglas

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.

Power Factor

Total Harmonic Distortion (THD)

Total Harmonic Distortion (THD)

Total harmonic distortion, or THD, is the measure of how much a ballast can distort the waveform of that building’s power supply and interfere with other equipment. Electronic ballasts today are rated at less than 20 percent, 15 percent, or less than 10 percent THD. The magnetic ballast is rated in the 20 to 28 percent range. The lower the THD the better and more efficient the ballast, and the less likely it is to interfere with other electronic equipment.
Ballast Lamp Type

Ballast Lamp Type

The type of bulb the ballast can fire.
Start Type

Start Type

For Ballasts, indicates the method the ballast uses to start its bulbs. HID ballasts can be Probe or Pulse start. Fluorescent ballasts can be Rapid, Instant or Programmed start. For HID and Fluorescent bulbs, indicates the start-type of ballast that the bulb will work with.