Keystone XFit LED Round High Bay — 240/320/400W Selectable, 277–480V

The Keystone KT-RHLED400PSHV-18C-8CSD-VDIM-P is a massive-output LED round high bay delivering up to 61,200 lumens with field-selectable 240W/320W/400W output and adjustable 4000K/5000K color temperatures. Operating on a dedicated 277–480V high-voltage driver, this 18-inch UFO-style fixture is engineered for extreme mounting heights. Built with an IP65 Wet Location rating and DLC Premium listing, it provides an ultra-durable, highly efficient lighting solution for massive warehouses, heavy industrial plants, and large-scale manufacturing facilities.

Key Features

• Selectable Wattage: 240W / 320W / 400W
• Selectable CCT: 4000K / 5000K
• Delivered Lumens: 39,850 to 61,200 lumens (up to 168 LPW)
• Voltage: 277–480V high-voltage input
• Dimming: 0–10V dimmable
• Controls: SmartPort receptacle for plug-and-play sensors
• Surge Protection: Built-in 6kV suppression
• Environmental Ratings: IP65 Wet Location rated
• Certifications: DLC Premium listed, UL/cUL Certified
• Estimated Life: >100,000 hours (L70)

Typical Applications

• Large warehouses and distribution centers
• Heavy manufacturing and industrial facilities
• Aviation hangars and high-ceiling structures
• Gymnasiums and indoor sports arenas

Performance & Light Output

This high-power round high bay provides massive, scalable illumination ranging from 39,850 to 61,200 lumens depending on the selected wattage and color temperature, achieving an ultra-efficient efficacy of up to 168 lumens per watt. Keystone's intuitive Power Select and Color Select technologies allow installers to effortlessly configure the output and light appearance perfectly for the site perfectly. The fixture is equipped with a ribbed polycarbonate lens that effectively reduces glare while producing low optical flicker, ensuring a safe and comfortable visual environment. The high-performance LEDs maintain a highly prolonged L70 rated life of over 100,000 hours.

Electrical & Controls

This fixture operates on a dedicated 277–480V AC driver with standard 0–10V dimming functionality to seamlessly integrate with facility energy management systems. The robust electrical components are securely protected by built-in 6kV surge protection. To maximize energy savings, the high bay features Keystone's innovative SmartPort receptacle, enabling the effortless installation of optional microwave sensors, PIR sensors, or SmartLoop Bluetooth mesh network controllers (all sold separately) without requiring complex internal fixture wiring.

Construction & Durability

Engineered to withstand the harshest industrial environments, the 18-inch luminaire features a rugged, black powder-coated aluminum housing. Its advanced thermal design incorporates a substantial spacer between the LED driver and the die-cast heat sink, drastically enhancing thermal performance. This allows the fixture to operate safely and reliably in extreme ambient temperatures ranging from -40°C (-40°F) up to 60°C (140°F). It carries an IP65 rating to completely protect internal components from dust and water ingress in wet locations.

Installation & Mounting

The fixture is optimized for straightforward suspended installation in high-ceiling environments. It comes standard with a heavy-duty J-Hook mounting accessory and a convenient 6-foot cord pre-wired for input and dimming connections. For customized site applications, optional surface mount kits, aluminum or clear polycarbonate reflectors, and wire guards are available for purchase separately.

What's Included

• LED Round High Bay Fixture (Black)
• J-Hook Mounting Accessory
• 6-Foot Power and Dimming Cord