Keystone KT-CBLED35PS-14C XFit Color & Power Select 1x4 Center Basket Troffer — 24W/30W/35W Selectable — 3500K/4000K/5000K — Frosted Lens

The Keystone KT-CBLED35PS-14C-8CSA-VDIM is a commercial 1x4 Center Basket Troffer engineered to deliver up to 4,550 lumens with field-adjustable 24W/30W/35W power settings and switchable 3500K/4000K/5000K color temperatures. Operating on 120–277V electrical systems with 0–10V continuous dimming, this XFit luminaire provides high-efficiency commercial illumination at up to 135 lm/W with low optical flicker. Built with a UL Listed and IC-Rated construction, it is qualified for commercial utility rebates under DLC Listed standards and features an architectural-grade center basket volumetric design with a frosted lens and 12V auxiliary driver output.

Key Features

• Selectable Wattage: 24W / 30W / 35W — field-adjustable via onboard Keystone Power Select switch (preset to highest lumen output)
• Maximum Lumen Output: 4,550 lm at 35W / 5000K
• Peak Efficacy: Up to 135 lm/W for high-efficiency commercial operation
• CRI: >80 color rendering across all settings
• Selectable CCT: 3500K / 4000K / 5000K — field-adjustable via onboard Keystone Color Select switch
• Lens & Optics: Frosted lens with 102.8° vertical spread and 120.0° horizontal spread for uniform, low-flicker volumetric distribution
• Dimming: 0–10V continuous dimming standard
• Voltage: Universal 120–277V AC driver with 12V Aux output
• Location Rating: UL Listed for commercial recessed ceiling applications; IC-Rated for insulated ceilings
• Operating Temperature: -4°F (-20°C) to 104°F (40°C) ambient range
• Certifications: DLC Listed, UL Listed, FCC Part 15 Class B
• Rated Life: L70 >100,000 hours @ 77°F (25°C) ambient fixture temperature
• Warranty: 10-year limited warranty — Keystone (NLB Trusted Warranty)
• Form Factor & Design: Architectural-grade 1x4 center basket volumetric design

Performance & Light Output

At 24W: 3,240 lm (3500K / 130 lm/W) | 3,312 lm (4000K / 134 lm/W) | 3,336 lm (5000K / 135 lm/W)

At 30W: 3,900 lm (3500K / 128 lm/W) | 4,050 lm (4000K / 132 lm/W) | 4,080 lm (5000K / 133 lm/W)

At 35W: 4,375 lm (3500K / 125 lm/W) | 4,515 lm (4000K / 129 lm/W) | 4,550 lm (5000K / 130 lm/W)

CRI >80 across all configurations. Rated life L70 >100,000 hours @ 77°F (25°C) ambient fixture temperature (50,000 hours overview rating). Equipped with a multi-wattage selectable driver (field-adjustable lumen output / variable power settings) and field-adjustable CCT (color temperature selectable / tunable white / switchable Kelvin 3500K/4000K/5000K) per ANSI C78.377-2017 color uniformity guidelines.

Smart & Control Features

The KT-CBLED35PS-14C-8CSA-VDIM is powered by a Keystone 0–10V dimming LED driver featuring pre-wired Purple (0–10V+) and Pink (0–10V-) dimming leads alongside a Yellow (12V+) auxiliary output lead for low-voltage control integration.

Electrical

Powered by a Keystone 0–10V dimming LED driver operating on 120–277V AC input. Delivers high electrical efficiency with a Power Factor >0.95, Total Harmonic Distortion (THD) <20%, and low optical flicker. Includes a 12V Aux output and pre-wired 0–10V dimming leads.

Emergency Battery Backup: Compatible with Keystone SmartSafe emergency backups (sold separately or factory-installable via suffix): KT-EMRG-LED-4BC-400-EN2 (4W, 400 lm, `/EM4`), KT-EMRG-LED-5C-500-EN/DF (5W, 500 lm, `/EM5`), KT-EMRG-LED-10BC-1000-EN3/DF (10W, 1,000 lm, `/EM10`), and KT-EMRG-LED-12C-1200-EN/DF (12W, 1,200 lm, `/EM12+`), all CEC T20 Compliant. Field installation requires the Style C mounting bracket kit KT-CBLED-C-EM-KIT (sold separately).

Construction

Housing & Build: Architectural-grade 1x4 center basket volumetric fixture housing with rear-mounted driver enclosure and external Power Select and Color Select slide switches.

Location & Environmental Rating: UL Listed for commercial recessed ceiling applications and IC-Rated for direct contact with ceiling insulation.

Operating Temperature: Operating ambient temperature range of -4°F (-20°C) to 104°F (40°C).

Lens & Optics: Frosted center basket diffuser lens engineered for low optical flicker and wide volumetric distribution (102.8° vertical spread, 120.0° horizontal spread, 1,542.3 max candela).

Finish: White finish formulated for commercial ceiling grids.

Dimensions: 47.72" L × 11.93" W × 1.83" H.

Installation & Mounting

Standard Mounting: Designed for commercial 1x4 recessed T-grid ceiling installations.

Accessories (Sold Separately):

• Surface Mount & Flange Kits: KT-CBLED-SM-14-KIT (1x4 Surface Mount Kit, Easy Code: EUW-25) and KT-CBLED-RMF-14-KIT (1x4 Recessed Mount Flange Kit, Easy Code: GUY-89)
• Emergency Battery Backups & Bracket: KT-EMRG-LED-4BC-400-EN2 (4W, 400 lm), KT-EMRG-LED-5C-500-EN/DF (5W, 500 lm), KT-EMRG-LED-10BC-1000-EN3/DF (10W, 1,000 lm), KT-EMRG-LED-12C-1200-EN/DF (12W, 1,200 lm), and KT-CBLED-C-EM-KIT (Style C Emergency Backup Mounting Kit)
• Metal Clad Cables & Cord Sets: KT-MC-NP-1-18/3 (1' 18/3 MC cable, `/MC13`), KT-MC-NP-6-18/3 (6' 18/3 MC cable, `/MC63`), KT-MC-NP-6-18/5 (6' 18/5 MC cable, `/MC65`), KT-MC-NP-6-18/6 (6' 18/6 MC cable, `/MC66`), and KT-CS-515P-6-18/3 (6' 125V NEMA 5-15P cord set for samples only, `/515P6`)

Certifications & Rebates

• DLC Listed: Qualifies for commercial utility rebate incentives across regional energy programs. To confirm rebate eligibility with your local utility provider, visit designlights.org and search DLC Product ID S-OZTXKX (Model KT-CBLED35PS-14C-8CSA-VDIM).
• UL Listed: Certified for commercial recessed ceiling applications.
• IC-Rated: Approved for direct contact with building insulation.
• FCC Part 15: Meets FCC Part 15, Class B electromagnetic interference requirements.
• NLB Trusted: Backed by a 10-year limited warranty verified under the National Lighting Bureau Trusted Warranty Program.

Typical Applications

• Commercial Office Corridors & Narrow Suites — Compact 1x4 footprint (47.72" × 11.93" × 1.83") with selectable 24W/30W/35W output (3,240–4,550 lm) fits narrow ceiling grids and linear layouts.
• Educational Classrooms & Administrative Rooms — Switchable 3500K/4000K/5000K CCT and low-flicker frosted volumetric optics support visual comfort across study and work surfaces.
• Healthcare Clinics & Examination Rooms — IC-Rated recessed construction, >80 CRI, and 0–10V dimming provide adaptable illumination for clinical spaces.
• Retail Aisles & Checkout Lanes — Up to 135 lm/W efficacy and 120.0° horizontal beam spread deliver uniform floor-to-shelf light coverage.
• Code-Compliant Egress Pathways — Compatible with factory- or field-installable Keystone SmartSafe CEC T20 emergency battery backups (400 to 1,200 lumens, sold separately).

What's Included

• Keystone KT-CBLED35PS-14C-8CSA-VDIM (Easy Code: QBB-35 / UPC: 843654164700) 1x4 XFit Color & Power Select LED Center Basket Fixture — White
• Installation and operation manual