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Six rectangular metal-cased ballasts in a cardboard box

GE Lighting

GE GETR347/277-375W 90896 Stepdown Autotransformer Ballast

SKU CH-CFDX-G8D63

Converts 347 VAC input to 277 VAC output for 375 W fixtures, supplied in a case of six

  • Converts 347 VAC input to 277 VAC output for compatible lighting systems
  • Step-down autotransformer design reduces voltage from 374 V to 277 V efficiently
  • Supplies 375 W power capacity for high-output fluorescent or HID fixtures
  • Case of six ballasts simplifies bulk installation and maintenance planning
  • GE Lighting manufacturing ensures reliable performance in commercial interior applications

Ballast for 347V-to-277V step-down

This GE step-down autotransformer ballast converts a 347VAC supply to 277VAC for compatible lighting loads. It is sold as a case of six units and suits commercial or industrial installations where the incoming voltage must be lowered for 277V fixtures.

Verify supply voltage and fixture rating

Confirm that the building supply is 347VAC and that the connected fixtures are rated for 277VAC output. The ballast is designed for a 375W load, so the total connected wattage must not exceed that figure. Ensure the wiring and circuit protection match the 347V input requirement.

Autotransformer construction for fixed mounting

The autotransformer design uses a single winding for voltage conversion, resulting in a compact unit suited to permanent installation in lighting enclosures. Leads are provided for hard-wired connection to supply and load circuits. The case-of-six packaging supports multi-fixture projects with consistent components.

How it compares

Measured against everything we stock in Lamp Ballasts & Drivers, at today’s prices. Recalculated every night.

Price $98.99
Pricier than about 67% of the 265 comparable items (median $61.99).

Specifications

Product
Brand nameGE

Questions about this item

Does the case of 6 include any mounting hardware or wiring accessories, or do I need to buy those separately?

The product is supplied as a case of six step-down autotransformer ballasts only; mounting hardware and wiring accessories are not included and must be sourced separately.

The listing mentions both 347 VAC and 374 V input figures — which one should I use to match my supply?

The ballast is rated for a 347 VAC input; the 374 V figure appears in the manufacturer highlights but the specified input voltage is 347 VAC.

What does the 375 W rating mean for the actual lighting load I can connect?

The 375 W rating indicates the maximum lamp power the autotransformer can handle when converting 347 VAC input to 277 VAC output for compatible fixtures.

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