Light Efficient Design
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Product Description
270W LED High Bay Retrofit Lamp, 4000K, 277–480V From Light Efficient Design
The LED-8242M40D-HV combines neutral 4000K light with a 277–480V input voltage range for higher-voltage High Bay retrofits. Its 270W LED output provides 38400 lumens and replaces up to 1000W HID lighting in compatible fixtures with EX39 mogul sockets.
Keep the existing fixture while reducing power consumption and gaining wired 0–10V dimming down to 20%. A 12V auxiliary output can be used for compatible sensors. Active cooling helps manage lamp temperature. This is a high-voltage lamp: confirm your power supply, and have an electrician bypass the existing HID ballast before installing the lamp.
Features & Benefits
- Upgrade Existing Lighting: Replace up to 1000W HID lighting with a 270W LED retrofit.
- 4000K Light: A practical choice for warehouses and high-ceiling workspaces.
- EX39 Mogul Base: Designed for compatible screw-in lamp holders.
- Adjustable Light Levels: Wired 0–10V dimming down to 20%.
- Ready for Controls: 12V auxiliary power for compatible sensors.
- Heat Management: Active cooling and temperature control help support reliable operation.
- Long Service Life: L70 rated life of 50000 hours.
- 5-Year Warranty.
- Surge Protection: Integrated 6kA surge protection.
- Pretested Driver: Burned in three times before shipping to check operation.
- Potted Driver: Encased in protective material to help guard against moisture and vibration.
Also available in: 120–277V | 19,900–21,100 lumens (selectable CCT) | 5000K.
Technical Specifications
| Model / SKU | LED-8242M40D-HV |
|---|---|
| Power | 270W |
| HID Replacement | Up to 1000W |
| Colour Temperature | 4000K |
| Input Voltage | 277–480V |
| Base | EX39 Mogul |
| Installation | Type B / Ballast Bypass |
| Dimming | Wired 0–10V, Down to 20% |
| Sensor Power | 12V Auxiliary Output |
| Colour Rendering Index | 80+ CRI |
| Rated LED Life | L70: 50000 Hours |
| Operating Temperature Range | −40°C to +50°C |
| Dimensions | 10.3 in Diameter × 12.5 in Height |
| Warranty | 5 Years |
| Surge Protection | 6kA |
| Driver Testing | Pretested; Burned In 3 Times Before Shipping |
| Driver Protection | Potted for Protection Against Moisture and Vibration |
No information sheet available.
Shipping Policy
Please read LED Network’s current Shipping Policy for shipping rates, exclusions, processing times, and delivery information.
RETURNS POLICY
LEDnetwork.ca provides a 30-day return period on all regular priced merchandise. Custom made and clearance items are not returnable.
To return or exchange a product, a Return Merchandise Authorization (RMA) number must be issued by LEDnetwork.ca. To request an RMA contact us here or by calling 1-800-979-4223. Please include your invoice number and the date of purchase with this request. We will forward an RMA request form for you to complete and return.
Within the 30 day return period LEDnetwork.ca will issue and RMA number under the following circumstances:
- The merchandise is unopened, has not been installed, and is in new condition.
- The merchandise is free from scratches, dents, and/or any other defect(s)
- The merchandise has not been modified from its original state or condition. Modification includes shortening or cords.
- The merchandise is in the original packaging and the original packaging has not been destroyed or broken
- There is no writing on the packaging
- RMAs will also be issued for defective merchandise exchange
Upon authorization of an RMA number, you will be provided with packing directions and the shipping address to the appropriate RMA warehouse location. You (the purchaser) are responsible for all shipping charges. We recommend that you use a trackable service and that you insure the shipment. Shipping charges are not refundable. Please include a copy of the RMA authorization form inside the box for the item you are returning.
All exchanges and returns must be approved by LEDnetwork.ca prior to goods being returned. Upon our receipt of an authorized return item(s) you will be notified. Within five business days of receiving the item(s) they will be inspected and a refund/exchange decision will be made.
After a refund has been approved, the amount equaling the product(s) returned, less the original order shipping cost borne by LED Network on your original order, and a 20% restocking charge, will be credited to your credit card or PayPal account. If a refund has been rejected, we will inform you via email.
In the case of an exchange being approved, the exchange item will be sent within our normal order processing timeline, unless it is out of stock.
All sales of Custom Made Products, Clearance Items, Controls, and Poles are final and may not be returned for refund or exchange.
Maximize Savings with Volume Pricing
Special volume discounts for larger lighting projects. Ideal for electrical contractors and building owners looking for commercial LEDs at a lower cost.
Worry-Free Warranty Support
As a trusted reseller of North American based manufacturers, we ensure quick resolution of any warranty issues. Your satisfaction is our priority.


