RAB T17FA 2x4 LED Troffer — 50W Selectable, 6521 Lumens, Battery Backup

The RAB T17FA-2X4/E is a versatile 2x4 LED troffer engineered for high-performance commercial illumination and essential life safety. Operating at up to 50W to deliver 6,521 lumens across a 120-277V input, this large-format fixture features built-in field-adjustable wattage and color temperature controls alongside a reliable emergency battery backup system. Designed with a frosted polystyrene lens, it seamlessly retrofits into standard T-grid ceilings, making it an ideal upgrade for offices and educational facilities requiring emergency egress lighting.

Key Features

• Emergency System: Integrated 90-minute battery backup
• Power Consumption: 50W Max (Field-adjustable 50/40/30W)
• Lumen Output: Up to 6,521 lumens
• Input Voltage: 120-277V
• Color Temperature: Selectable CCT (3500K/4000K/5000K)
• Dimming: 0-10V continuous (10-100%)
• Lens: Frosted polystyrene (PS)
• Housing: Aluminum frame with cold-rolled steel back
• Environmental Rating: IP20 and damp location listed

Typical Applications

• Large commercial office egress corridors
• Retail environments
• Educational institutions
• Healthcare facilities
• Enclosed stairwells

Performance & Light Output

This 2x4 troffer outputs a maximum of 6,521 lumens at its highest 50W setting during normal operation. It features comprehensive field-selectability with three distinct color temperatures (3500K, 4000K, and 5000K) and three wattage levels. In the event of a power failure, the integrated battery automatically activates, supplying standby power to operate the fixture at a reduced illumination level for a minimum of 90 minutes to ensure safe building evacuation. The optical design utilizes a frosted polystyrene lens to ensure smooth, glare-free light distribution.

Electrical & Controls

Powered by a high-efficiency Class 2 driver operating on a universal 120-277V circuit, this luminaire ensures stable performance across standard commercial grids. It includes standard 0-10V dimming leads to facilitate smooth integration with daylight harvesting sensors and energy management systems. Installers must ensure an unswitched hot supply line is connected to properly charge the emergency battery system and allow it to function during localized outages.

Construction & Durability

Engineered for lightweight durability, the fixture consists of a robust aluminum frame and a cold-rolled steel back housing, finished in a clean white powder coat to blend seamlessly with standard ceiling grids. The enclosed unit carries an IP20 ingress protection rating against dust, and it is strictly UL listed for use in environmentally controlled damp interior spaces. Due to the battery backup component, the minimum starting temperature is rated for 32 degrees Fahrenheit.

Installation & Mounting

The fixture is designed for rapid, drop-in installation into standard 2x4 recessed T-bar ceiling grids. It rests securely on the grid structure, allowing for quick deployment in both retrofit and new construction projects. Installers can adapt the unit for alternative applications using optional surface and recessed mounting kits designed specifically for drywall ceilings (sold separately), ensuring versatile placement across varied architectural layouts requiring emergency lighting.

What's Included

• (1) 2x4 LED Troffer Fixture
• (1) Pre-installed Driver Assembly
• (1) Emergency Battery Backup Unit