Robertson IEA432T8120N — 3-4 Lamp T8 Electronic Ballast, 120V Instant Start

Versatile ballast for 3 or 4 T8 lamps

The Robertson IEA432T8120N is a compact electronic ballast purpose-built to power 3 or 4 T8 lamps, including common sizes such as F32T8, F25T8, F17T8, and F40T8. Designed for 120V single-voltage systems, it delivers instant start for rapid lamp ignition and steady operation in residential and light commercial spaces. Its thoughtful design supports retrofits and replacements without requiring complex rewiring, helping convert existing fixtures into modern, energy-efficient lighting setups.

Smart, adaptable performance

This ballast features a parallel lamp connection that helps maintain stable output when lamps are not perfectly matched. Independent lamp operation means that if one tube needs service, the others can continue to run, reducing downtime and keeping spaces lit.

• Supports 3 or 4 lamps in a single unit, simplifying retrofits
• Instant start technology for fast illumination
• Parallel wiring improves performance with mixed lamp configurations

Easy retrofit and installation

Engineered for straightforward installs, the unit is compact and lightweight with standardized mounting dimensions and pre-wired leads. It is suitable for remote mounting up to 18 feet, using 18 AWG leads, which gives installers flexibility in fixture layouts and ceiling designs.

• Pre-wired leads and standardized dimensions streamline wiring
• Remote mounting up to 18 feet for flexible installations
• Durable build designed to endure frequent on/off cycling

Safety, compliance, and reliability

Safety and reliability are central to the design. The IEA432T8120N is UL/935 Listed (Class P, Type 1 Outdoor) and cUL certified, RoHS compliant, and features inherent thermal protection. It contains no PCBs and is built to meet demanding standards for fire and electrical safety, providing peace of mind in mixed-use environments.

Durability and environmental tolerance

The ballast is engineered to perform across a broad temperature spectrum, from chill to heat, with a solid-state design that minimizes heat buildup. This contributes to consistent light output and longer component life in challenging spaces like garages, basements, or utility rooms.

Compatibility and practical use cases

Designed to be an adaptable replacement for a wide range of ballast models, this unit fits many 3- and 4-lamp T8 installations. It is well suited for retrofits in homes, small offices, retail backrooms, and other light commercial settings where 120V power is standard. The result is a reliable balance of brightness, startup speed, and ease of installation.

What you get and installation notes

This ballast ships ready for integration with existing fixtures that use 3 or 4 T8 lamps. Check the mounting footprint and ensure compatible lamp types are in use. The unit’s compact form and standard wiring simplify the upgrade path without sacrificing performance.