Lutron LED Ballast Retrofit Kit T5HO 3500K (3LD4T5H-2M35-1)

Product Overview

The Lutron 3LD4T5H-2M35-1 is a UL‑Listed LED ballast retrofit kit designed to replace the ballast and lamps in 4‑ft, 2‑lamp T5HO fluorescent fixtures with a pretested LED driver and lamps at 3500K.

Kits include LED lamps, a 3‑wire Lutron driver, wiring and connectors, and installation instructions to simplify fluorescent-to-LED upgrades while reusing existing housings and lamp sockets.

Key Features

• For T5HO, 4 ft, 2‑lamp fixtures (replaces ballast and lamps)
• 3‑wire Lutron driver compatible with Lutron 3‑wire control wiring
• 3500K color temperature
• Dimmable to 1% when used with a compatible Lutron control
• UL‑Listed kits with pretested driver and lamps; includes wires, connectors, and instructions
• Five‑year warranty on driver and LEDs (per manufacturer documentation)

What this kit does

The 3LD4T5H-2M35-1 converts an existing fluorescent T5HO 4‑ft, 2‑lamp fixture into a dimmable LED fixture by replacing the fluorescent ballast and lamps with a Lutron LED driver and C‑Flex LED lamps supplied in the kit.

The retrofit is designed so the existing fixture housing and lamp sockets can be reused when the correct kit is selected.

• Replaces ballast and lamps with an integrated LED driver and LED lamps
• Adds dimming capability when used with compatible Lutron 3‑wire controls

Suitable applications

This kit is intended for fluorescent‑to‑LED retrofits in commercial or institutional spaces where 4‑ft T5HO, 2‑lamp fixtures are installed.

Manufacturer materials list common project types such as offices, schools, retail, warehouses, and energy- or maintenance-reduction projects.

• Designed for 4‑ft T5HO, 2‑lamp linear fixtures
• Useful when reuse of existing housings and sockets is desired

Compatibility and dimming controls

The kit includes a driver with a 3‑wire control interface intended to pair with Lutron 3‑wire dimmers or compatible 3‑wire control wiring. Manufacturer documentation indicates dimming to 1% is supported when used with a compatible Lutron control.

Confirm the existing fixture’s lamp type, length, lamp count, and control wiring before ordering to ensure the kit matches the installed ballast and control wiring.

• 3‑wire driver — intended to pair with Lutron 3‑wire controls
• Dimming: to 1% with a compatible Lutron control
• Verify control wiring and existing ballast model before ordering

Installation and kit contents

Lutron ballast retrofit kits by C‑Flex are supplied with LED drivers, C‑Flex LED lamps, wires, connectors, and installation instructions. They are intended to be drop‑in replacements for the ballast and lamps in typical scenarios.

Manufacturer guidance outlines a three‑step approach: identify the existing ballast model and control wiring, order the correct kit, and install by replacing the ballast with the driver and the fluorescent lamps with the supplied LED lamps.

• Includes lamps, driver, wires, connectors, and instructions
• UL‑Listed and pretested for quality and compatibility
• Designed to use existing control-system hardware without special programming in typical installs

Key specifications

Use these specifications for procurement and planning. Confirm the model number and fixture details before ordering.

• Brand: Lutron
• Model / SKU: 3LD4T5H-2M35-1
• Product type: Ballast & LED driver (retrofit kit)
• Wiring: 3‑Wire driver
• Lamp type: T5HO
• Lamp length: 4 ft
• Lamp count: 2
• Color temperature: 3500K
• Dimming range: to 1% (with compatible Lutron control)
• UPC: 784276313506

Before You Order

Confirm the fixture’s existing lamp type, lamp length, lamp count, and control wiring before ordering to ensure the kit is the correct match for your retrofit project.

• Verify the existing ballast model and control wiring (3‑wire) on the fixture
• Confirm this kit (T5HO, 4 ft, 2‑lamp, 3500K) matches the lamps you are replacing

Ordering from Lumera Electric

Check the purchasing options shown on the Lumera Electric product page for Lutron LED Ballast Retrofit Kit T5HO 3500K (3LD4T5H-2M35-1). For project quantities or additional ordering requirements, use Request a Quote and provide the required quantity.