Made the Right Way the Good Way

Reimagined Incandescent Glow

The EL332-120/277HF Electronic Fluorescent Ballast brings precision-engineered illumination to modern T8 and LTT fluorescent systems. Designed to operate 2 or 3 lamps with consistent performance, this high-frequency ballast delivers stable, flicker-free light output across a broad 120–277 volt range. Engineered with aluminum housing and free of PCB contaminants, this ballast elevates traditional fluorescent lighting by ensuring smooth, reliable, long-lasting operation in commercial, industrial, educational, and retail environments.

Power and Versatility

Watt for watt, the EL332-120/277HF generates maximum lamp efficiency with a high power factor, Class P thermal protection, and quiet Class A sound rating. Compatible with multiple G13 medium bi-pin lamps, including:

• F17T8

• F25T8

• F32T8

• F36T8 (TLD36W)

• 2 × F40LTT/4P (PL-L40W)

• 2 × F40T8

Its 120–277V universal voltage compatibility makes it suitable for both commercial and residential applications, ensuring consistent lamp performance on any standard line voltage system. Ideal for new installations or retrofits seeking maximum lamp compatibility and energy efficiency.

For the Love of Color

High-frequency operation enhances lamp performance by reducing visible flicker, improving perceived brightness, and supporting accurate, comfortable color rendering across all compatible T8 and LTT lamp types. Whether operating warm, neutral, or daylight lamps, the EL332-120/277HF preserves the quality and clarity of the fluorescent spectrum for truer, more consistent color output.

Rough Service LED

Built inside a durable aluminum housing, this ballast is protected against vibration, heat stress, and electrical fluctuations. Inherent thermal protection guards internal components, extending service life while maintaining consistent, reliable lamp operation. The solid 18AWG wire leads—550mm, 750mm, and 950mm—are factory-installed for secure, dependable connections in demanding environments.

Effortless Dimming

While not designed for dimming applications, the EL332-120/277HF ensures steady, instant-start performance using a parallel start method. Lamp failure in one socket will not compromise the others—an important advantage in commercial applications where uptime matters.

Built to Last

Every EL332-120/277HF ballast is date coded for quality tracking and manufactured without PCBs, aligning with modern environmental and safety standards. UL Listed and engineered for long life, this ballast delivers consistent operation, reduced maintenance, and dependable performance across its service life.

Guardian of Prosperity

High-efficiency T8 systems powered by the EL332-120/277HF reduce energy consumption and operating costs. Whether used in offices, industrial facilities, or retail spaces, upgrading older magnetic or single-voltage ballasts to this high-frequency electronic design results in better light, less heat, and lower utility bills. Energy savings extend to reduced HVAC strain and fewer labor hours spent replacing lamps and failed ballasts.

Xtreme Life Guarantee

Backed by GoodBulb quality standards, this ballast supports long-life lamp performance and fewer service disruptions. Designed with inherent thermal protection and precision electrical regulation, the EL332-120/277HF ensures stable light output and long-term reliability across all compatible lamp systems.

Impactful Lighting

A GoodBulb ballast is more than a component—it’s part of a system that reduces energy waste, extends product life, and supports better lighting for people and the planet. By choosing dependable, high-efficiency electronic ballasts, you reduce maintenance, conserve natural resources, and minimize landfill impact. Every upgrade helps build a cleaner, brighter, more sustainable world.