Class I, Div 2
Product details
Class I, Div 2 / Class II, Div 1
HL-B4 is the largest bay light in the HL-B series, with output up to 400W. The HL-B family is a versatile range of round bay lights designed for installation across a multitude of applications. With a diverse selection of interchangeable driver housings, mounting brackets and accessories, it adapts to different requirements.
Key features
- Hazardous Locations Certified
- Various mounting accessories available
- Copper-free aluminum alloy housing
- Great corrosion resistance
- 150,000+ hours LED life expectancy (L70)
- Wiring through 1/2" NPT or 3/4" threaded holes, M20 and M25 optional
- Dimming options available upon request
Specifications
| Model | HL-B4 |
|---|---|
| Wattage | 150 / 180 / 200 / 250 / 300 / 350 / 400 W |
| Lumens | 19,500 to 52,000 lm |
| Efficacy | 130 lm/W |
| Voltage | 120-277V AC / 277-480V AC |
| Optics | 40° / 60° / 90° / 120° |
| Lens | Clear Flat Glass / Convex Glass / Flat PC / Convex PC |
| CCT | 2700K / 4000K / 5000K / 5700K / 6500K, CRI 70+ |
| Mounting | Ceiling, Trunnion, Pendant, Wall, Stanchion 25° |
| Power factor | >0.90 |
| Ambient temperature | T6/T80°C: -40°C to +40°C (-40°F to +104°F) T5/T95°C: -40°C to +50°C (-40°F to +122°F) T4/T130°C: -40°C to +65°C (-40°F to +149°F) |
| Protection | IP66 ingress protection / NEMA 4X / IK08 Impact Grade |
| Classification | UL 844 Hazardous Locations / UL 1598 Wet Locations / UL 1598A Marine Outside Type |
| Hazardous | Class I, Division 2, Group A, B, C, D / Class II, Division 1, Groups E, F, G Class I, Zone 2, Group IIA, IIB, IIC / Zone 21 or 22 |
| Certification | cULus, ABS |
| Warranty | 5 Years Limited Warranty |
Mounting and dimensions




Fixture diameter is 480 mm (18.90 in) on all housing types.
| Housing type | Overall width or length | Entry |
|---|---|---|
| CM, Ceiling Mount | 354 mm (13.94 in) bracket width | |
| TM, Trunnion Mount | 436 mm (17.16 in) bracket width | |
| PM, Pendant Mount | ||
| WM, Wall Mount | 560 mm (22.05 in) | 3/4" NPT |
| JM, Stanchion Mount 25° | 516 mm (20.31 in) | 1-1/2" NPT |
Lens options

- FG, Flat Glass
- CG, Convex Glass
- FP, Flat Polycarbonate
- CP, Convex Polycarbonate
WG-B4 wire guard is optional.
Photometrics




Ordering guide
Example: HL-B4-250W-LV-120D-FG-50K-WM
| Series | Wattage | Voltage | Optics | Lens | CCT | Housing type |
|---|---|---|---|---|---|---|
| HL-B4 | 150W 180W 200W 250W 300W 350W 400W |
LV (120-277V) HV (277-480V) |
40D (40°) 60D (60°) 90D (90°) 120D (120°) |
FG (Flat Glass) CG (Convex Glass) FP (Flat PC) CP (Convex PC) |
27K (2700K) 40K (4000K) 50K (5000K) 57K (5700K) 65K (6500K) |
CM (Ceiling Mount) TM (Trunnion Mount) PM (Pendant Mount) WM (Wall Mount) JM (Stanchion Mount) |
Contact us for custom modifications and accessories.





