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Compact rectangular electronic ballast in grey metal casing with side mounting tabs and wiring terminals

Fulham

Fulham WH2-277-L Electronic Ballast 277V AC

SKU CH-4VFS-HFS6K

An electronic fluorescent ballast operating at 277V AC for one or two lamps up to 35 watts

  • Typeballast
  • Weight0.45
  • Operates at 277 V AC for commercial lighting installations
  • Supports one or two fluorescent lamps up to 35 W each
  • Instant start delivers immediate illumination without flicker
  • Functions down to -22 °F for reliable cold-weather starts
  • Compact 0.45 kg design fits tight fixture spaces

Electronic Ballast for Fluorescent Lamps

The Fulham WH2-277-L is an electronic ballast designed to operate one or two fluorescent lamps at 277V AC input. It supports a wide range of bulb types including DBX, T12, T5, T6, T8, and T8U configurations.

Suits Commercial Lighting Retrofits

This unit fits installations needing instant-start operation for lamps between 13 and 42 watts. It is not suitable for dimming applications or fixtures requiring programmed-start ballasts. Buyers needing dimming control or compatibility with LED tubes should look elsewhere.

Verify Lamp Type and Voltage Before Ordering

Confirm your existing lamps match the supported wattages of 13, 14, 15, 17, 18, 19, 20, 24, 25, 28, 30, 32, or 42 watts. Ensure the supply voltage is 277V AC and the fixture operates within a minimum starting temperature of -22 degrees F.

Highlights

  • Operates at 277 V AC for commercial lighting installations
  • Supports one or two fluorescent lamps up to 35 W each
  • Instant start delivers immediate illumination without flicker
  • Functions down to -22 °F for reliable cold-weather starts
  • Compact 0.45 kg design fits tight fixture spaces

Specifications

BrandFULHAM
Typeballast
Weight0.45

Questions about this item

Which fluorescent lamps must I already have for the WH2-277-L to operate?

It supports one or two DBX, T12, T5, T6, T8 or T8U lamps rated from 13 W up to 42 W.

Will the ballast run alongside older T12 lamps I keep in the same fixture?

Yes, T12 is listed among the supported bulb types, so existing T12 lamps can be used.

How can I confirm the ballast is working after installation?

At -22 °F minimum starting temperature the lamps should ignite instantly with no flicker.

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