The RAB RBAY22L is the large model of the field-adjustable RBAY22 linear LED high bay series, delivering up to 48,221 lumens at 320W — engineered for the highest mounting heights and largest industrial spaces. Wattage (320W / 260W / 200W), CCT (3500K / 4000K / 5000K), and beam angle (55° / 85° / 105°) are all field-selectable on-site. Operating on 120–277V with 0–10V dimming (dims to 10%) and 6kV+6kV surge protection. UL Listed for Wet Locations, rated IP66 and IP69K, NSF certified, and IK10 impact-rated. Certified DLC Premium (120–277V code: S-T8L2Y1). Rated 100,000 hours per IES LM-80 / TM-21. 5-year RAB warranty. Replaces 750W–1000W MH/HPS/fluorescent high bays.

Key Features

• Selectable Wattage: Field-adjustable 320W (default) / 260W / 200W via onboard switch — no tools required.
• Selectable CCT: Field-adjustable 3500K / 4000K / 5000K (default 4000K).
• Selectable Beam Angle: 55° / 85° (default) / 105° — field-adjustable optics for precise photometric control.
• Maximum Lumen Output: 48,221 lm at 320W (120–277V).
• Peak Efficacy: Up to 150.7 lm/W — highest efficacy in the RBAY22 family.
• CRI & Color Uniformity: 80+ CRI; per ANSI C78.377-2017.
• Dimming Protocol & Range: 0–10V continuous dimming, dims to 10%; requires separate 0–10V DC circuit.
• Voltage & Driver: 120–277V / 50–60Hz; Constant Current, Class 1 driver.
• Location Rating: UL Listed for Wet Locations · IP66 / IP69K.
• Impact Rating: IK10.
• Cold Weather Start: −20°C (−4°F); max ambient 50°C (122°F). With battery backup: 0°C (32°F) / 45°C (113°F).
• Surge Protection: 6kV+6kV.
• Certifications: UL Listed (Wet) · IP66 / IP69K · IK10 · NSF · DLC Premium (S-T8L2Y1) · RoHS Compliant.
• Rated Life: 100,000 hours per IES LM-80 / TM-21.
• Warranty: 5-year RAB limited warranty covering light output, driver performance, and paint finish.
• Green Technology: Mercury-free, UV-free, RoHS-compliant components.

Performance & Light Output

At 320W: 48,221 lm (3500K / 4000K / 5000K selectable).
At 260W: proportional output across all CCT selections.
At 200W: proportional output across all CCT selections.
CRI: 80+. Beam angle: 55° / 85° / 105°. Rated life: 100,000 hours per IES LM-80 / TM-21 (L70). Color uniformity per ANSI C78.377-2017.

Lens & Optics

Field-selectable beam angle: 55° (narrow, for very high mounting heights ≥35 ft), 85° (default, general industrial), 105° (wide, for broad coverage at mid-range heights). Polycarbonate lens. No additional accessories required for optic selection on-site.

Smart & Control Features

Standard 0–10V dimming built in (dims to 10%). Optional sensor accessories:

• PIR40 — High Ceiling Low Voltage PIR Sensor, White
• PIR40/LCB — LC Blue High Ceiling Luminaire Controller with PIR, White
• MVS50 — High Ceiling Low Voltage MVS Sensor, White
• MVS50/LCB — LC Blue High Ceiling Luminaire Controller with MVS, White
• MSR1 — Multi Sensor Remote Control, IP20

Electrical

Input voltage: 120–277V / 50–60Hz. Constant Current, Class 1 driver. Power factor (default): 99.8% at 120V, 94.5% at 277V, 96.5% at 480V. THD (default): 5.33% at 120V, 10.32% at 277V, 7.5% at 480V. Input current — 320W: 2.7A (120V) / 1.6A (208V) / 0.7A (240V) / 0.6A (277V); 260W: 2.2A (120V) / 1.3A (208V) / 1.2A (240V) / 1.1A (277V); 200W: 1.7A (120V) / 1.0A (208V) / 0.95A (240V) / 0.85A (277V). Surge protection: 6kV+6kV. Emergency battery backup: EMHB60 (60W, for 320W models), EMHB60/LCB. Mercury-free, UV-free, RoHS compliant.

Construction

Housing: Die-cast aluminum. Lens: Polycarbonate. Finish: High-durability powder-coat — White. IP66 & IP69K. IK10. NSF certified. Weight (120–277V): 13.62 lbs. Dimensions: 24½″ L × 15¾″ W × 3¾″ H.

Installation & Mounting

Comes standard with V-hooks for chain mounting. Optional accessories:

• PMKRBAY22 — Pendant Mount Kit, White
• EMHB60 — Emergency Battery Backup 60W (for 320W models), White
• EMHB60/LCB — Emergency Battery Backup 60W with LCB, White

Ceiling height guidance: 200W for 25–35 ft; 260W for 30–40 ft; 320W for 35–50 ft.

Certifications & Rebates

UL Listed (Wet Location) · IP66 / IP69K · IK10 · NSF Certified · DLC Premium — Product Code: S-T8L2Y1. Search S-T8L2Y1 at designlights.org to verify utility rebate eligibility. Meets DLC 5.1 requirements. RoHS Compliant.

Typical Applications

• High-Ceiling Warehouses & Distribution Centers: 48,221-lm output handles mounting heights of 35–50 ft with selectable beam angles for precise aisle lighting.
• Food Processing & Wash-Down Environments: IP69K and NSF certification for high-pressure cleaning environments.
• Cold Storage & Refrigerated Warehouses: −20°C cold-start rating ensures performance in deep-freeze and cold-storage facilities.
• Heavy Manufacturing & Industrial Facilities: IK10 impact rating and die-cast aluminum housing withstand the most demanding mechanical environments.
• Aircraft Hangars & Large Covered Venues: Very high lumen output and narrow 55° beam option support effective lighting at extreme mounting heights.

What's Included

• RAB RBAY22L LED Linear High Bay Fixture
• V-Hooks for Chain Mounting