Fulham WH2-277-L 30W Instant Start Fluorescent Ballast

277V Instant Start Fluorescent Ballast by Fulham

The WH2-277-L from Fulham is a 277-volt electronic instant start fluorescent ballast designed for replacing or servicing fluorescent light fixtures. It is suitable for commercial and industrial fixtures operating on 277V. Key features include a 30-watt rating, a 0.9 ballast factor, and a power factor above 0.9.

Key Features and Benefits of This Fluorescent Ballast

Instant start operation lights the lamps immediately without a warm-up flicker. A ballast factor of 0.9 gives near-full light output from the lamps, and a power factor above 0.9 means efficient use of supplied power. The compact case also eases replacement in tight fixture housings.

Where to Use the WH2-277-L Fluorescent Ballast

This ballast is for existing fluorescent fixtures on a 277V supply, common in commercial buildings, warehouses, and institutional spaces. It replaces a failed ballast so the fixture can keep working. It is not for 120V circuits or for LED lamps that bypass the ballast.

Installation and Compatibility Checks

Confirm that your fixture runs on 277V and that the ballast matches your lamp type and count. A retailer listing shows operation of one or two lamps, so verify lamp compatibility on the specification sheet. The case is 5.5 inches long, so check the available space. Have a qualified electrician install it.

Additional Buying Context

The ballast is UL/CSA Listed, RoHS compliant, and covered by a 5-year manufacturer warranty. Fulham sells it in the WorkHorse 2 line. If you plan to convert to LED, check whether the replacement lamps need the ballast removed.