1. Introduction
This manual provides essential information for the safe and efficient installation, operation, and maintenance of your RAB Lighting H17B Field Adjustable LED Highbay. Please read these instructions thoroughly before installation and retain them for future reference. The H17B high bay is designed to be compact yet deliver high light output, suitable for replacing traditional high-wattage metal halide fixtures.
2. Important Safety Information
- Always disconnect power before installation, servicing, or cleaning.
- Installation must be performed by a qualified electrician in accordance with all national and local electrical codes.
- Ensure the mounting surface can support the weight of the fixture.
- Do not operate the fixture with damaged wiring or components.
- This fixture is suitable for wet locations and has an Ingress Protection rating of IP65 for dust and water.
- Avoid direct eye exposure to the light source when the fixture is operating.
3. What's in the Box
Verify that all components are present and undamaged upon unpacking:
- LED Fixture (1)
- Hanging Hook (pre-installed)
- 6-foot Cord (pre-installed)

Image 1: RAB H17B LED Highbay, showing the main unit with the pre-installed hanging hook and cord.
4. Setup and Installation
4.1 Mounting the Fixture
The H17B Highbay comes standard with a heavy-duty hanging hook for suspension mounting. Ensure the mounting structure is capable of safely supporting the fixture's weight (approximately 4.7 pounds).
- Securely attach the hanging hook to a suitable ceiling hook or support structure.
- Alternatively, the fixture is capable of 3/4"-14 NPT pendant mounting (pendant by others).

Image 2: Side view of the RAB H17B LED Highbay, highlighting the robust hanging hook mechanism for secure installation.
4.2 Electrical Connection
The fixture operates on 120-277 Volt AC power. The pre-installed 6-foot cord is provided for connection to the main power supply. The driver includes wiring for 0-10V dimming systems.
- Connect the fixture's power cord to a suitable power source, ensuring proper grounding.
- If utilizing 0-10V dimming, connect the dimming wires to a compatible 0-10V dimming control system.
- Ensure all connections are secure and insulated according to electrical codes.
4.3 Field Adjustment of CCT and Wattage
The H17B Highbay features field-selectable Correlated Color Temperature (CCT) and wattage settings. These adjustments are typically made before final installation or commissioning.
- CCT Selection: Choose between 3000K (Warm White), 4000K (Neutral White), or 5000K (Cool White) using the selector switch located on the fixture.
- Wattage Selection: Adjust the light output by selecting 100W, 120W, or 150W using the wattage selector switch. This impacts the lumen output, ranging from 15,317 to 22,224 lumens.
Refer to the markings on the fixture for the exact location of these selector switches.
5. Operation
5.1 Basic Operation
Once properly installed and connected to power, the H17B Highbay will illuminate when power is supplied. The selected CCT and wattage settings will determine the light output characteristics.
5.2 Dimming Functionality
The fixture supports 0-10V dimming. When connected to a compatible 0-10V dimming system, the light output can be adjusted smoothly, dimming as low as 10% of its maximum output.
- Ensure your 0-10V dimmer is compatible with LED drivers.
- Follow the dimmer manufacturer's instructions for operation.
6. Maintenance
The RAB H17B LED Highbay is designed for minimal maintenance. Regular cleaning and inspection will help ensure optimal performance and longevity.
6.1 Cleaning
- Disconnect power before cleaning.
- Clean the exterior surfaces with a soft, damp cloth.
- Do not use abrasive cleaners, solvents, or cleaners containing ammonia, as these can damage the finish or optical components.
6.2 Inspection
- Periodically inspect the fixture for any signs of physical damage, loose connections, or wear.
- Ensure mounting hardware remains secure.
- If any damage is observed, disconnect power and contact a qualified technician for repair or replacement.
7. Troubleshooting
Before attempting any troubleshooting, ensure power is disconnected to the fixture.
| Problem | Possible Cause | Solution |
|---|---|---|
| Fixture does not illuminate | No power supply; Loose wiring; Faulty fixture. | Check circuit breaker/fuse; Verify all electrical connections; Contact RAB Lighting support if problem persists. |
| Light output is too low/high | Incorrect wattage setting; Dimmer setting too low/high. | Adjust wattage selector switch; Adjust 0-10V dimmer setting. |
| Incorrect light color (CCT) | Incorrect CCT setting. | Adjust CCT selector switch. |
| Flickering light | Unstable power supply; Incompatible dimmer; Loose connection. | Check power source stability; Ensure dimmer compatibility; Verify wiring connections. |
8. Specifications
| Feature | Detail |
|---|---|
| Model Name | H17B |
| Brand | RAB Lighting |
| Light Type | LED |
| Wattage (Selectable) | 100W / 120W / 150W |
| Lumen Output | 15,317 - 22,224 Lumens (depending on wattage) |
| CCT (Selectable) | 3000K / 4000K / 5000K |
| Voltage | 120-277 Volts |
| Dimming | 0-10V (dims to 10%) |
| Ingress Protection (IP) Rating | IP65 (Suitable for wet locations) |
| Material | Aluminum |
| Color | Black |
| CRI | 85 |
| Mounting | Hanging Hook (standard), 3/4"-14 NPT Pendant (optional, by others) |
| Product Dimensions | 10.25"W x 7.38"H |
| Item Weight | 4.7 Pounds |
| Certifications | UL Listed |

Image 3: Technical drawing showing the dimensions of the RAB H17B LED Highbay.
9. Warranty and Support
9.1 Warranty Information
RAB Lighting products are manufactured to the highest quality standards. For specific warranty terms and conditions applicable to the H17B LED Highbay, please refer to the official RAB Lighting website or contact their customer service directly. Retain your proof of purchase for warranty claims.
9.2 Customer Support
If you have any questions, require technical assistance, or need to report an issue with your RAB H17B LED Highbay, please contact RAB Lighting customer support. Contact details can typically be found on the manufacturer's official website.





