25
25° circular
Symmetric
Frosted
Measured, BOS2-35B-840-25
Industrial · Linear
LED Trunking Lighting System
Infinity Linear and Lighting Trunking System
- 35W to 140W
- 5,565lm to 23,400lm
- 159lm/W to 156lm/W
- IP20
- 5 Years (3 Years Emergency) warranty
Order code BOS2-50B-840-90-D1-WH-5C
7,950 lm
CRI>80, 4000K. 90° circular optic. WH White.
No lumen is published for that combination.
Measured file BOS2-50B-840-90: 8,116 lm at 50.44 W (160.9 lm/W).
50W nominal. 1,500 × 70 × 77 mm, 1 module, 2.2 kg (excludes bracketry). Driver 1 × CSD2S-50 (own brand; Tridonic for D4). CE, RoHS, CB, UL, DLC, GS, SAA, ErP.
- 159 lm/W
The Boswell Series is a versatile and fully integrated LED lighting trunking system, designed for fast and efficient installation. Its tool-free, push-fit trunking design supports up to twelve cores, including three switchable live conductors, DALI control, and a permanent live for emergency lighting.
A wide range of interchangeable clip-in luminaires, blanking plates, and accessories allows for flexible configuration, making the system adaptable to diverse lighting needs. Luminaires are available in various lumen outputs and optical distributions, with optional features such as integrated LED track lights, sensors, and emergency lighting sections.
The system supports complex layouts through the use of "T", "X", and terminal sections, enabling customised designs. Ideal for applications across multiple sectors - including big-box retail, factories, warehouses, and indoor sports facilities - the Boswell Series delivers powerful, scalable lighting from a single linear system.
| Series code | BOS2 |
|---|---|
| Nominal power | 35W to 140W |
| Efficacy | 159lm/W to 156lm/W @ CRI>80, 4000K CCT |
| Lumen output | 5,565lm to 23,400lm |
| Lumen maintenance | L80B50 ≥60,000 hours @ Tc 38°C |
| Certification | CE, RoHS, CB, UL, DLC, GS, SAA, ErP |
| Warranty | 5 Years (3 Years Emergency) |
Sheet lumen at CRI>80, 4000K, with no modification: 35B 5,565 lm, 50B 7,950 lm, 70B 10,920 lm, 70C 11,130 lm, 100C 15,900 lm, 140C 23,400 lm. Another CRI, or a modification, still prints the order code and leaves the lumen blank. 12 measured files give 155.6 to 165 lm/W; the measured figure for the chosen optic shows under the code.
DOWNLOADS
Questions for Adam list what the sheet and the measured files do not settle yet.
LIGHT DISTRIBUTION OPTIONS
60
60° circular
Symmetric
Frosted
Measured, BOS2-35B-840-60
90
90° circular
Symmetric
Frosted
Measured, BOS2-35B-840-90
120
120° circular
Symmetric
Frosted
Measured, BOS2-35B-840-120
D30
Double 30°
Asymmetric
Part frosted (FR)
Drawn from the beam setting, not measured
LA1
Left asymmetric
Asymmetric
Part frosted (FR)
Drawn from the beam setting, not measured
RA1
Right asymmetric
Asymmetric
Part frosted (FR)
Drawn from the beam setting, not measured
Polar: solid green C0–C180, dashed blue C90–C270, dotted amber the plane through the brightest direction when it lies between them; rings at 25% steps of the peak. Isolux: the footprint on the floor with the fitting aimed straight down, contours at 50%, 25% and 10% of the brightest point, grid in mounting heights (H). Both are drawn from the first measured file for that optic.
DESIGN FEATURES
Linear lights designed for PURPOSE
With efficacies of up to >150 lm/W, the Boswell Series can offer an impressive reduction in energy from existing linear systems. This is further enhanced by a variety of application focussed lenses which ensure the optimum spread of light is directed where required. A variety of colour temperatures and high standard CRI >80 provide added capability, making the Boswell Series an exceptional solution to almost any commercial or industrial linear lighting system requirement. Infinity Lighting - Seamless product to product transition - architectural project solutions alongside enterprise-grade performance. Pre-Wired Trunking - Modular easy-install design - reduce time on site and minimise disruption of day-to-day operations. Wired in 25mm 2, 5, 8 and 12 core options to accommodate main power, dimming controls and permanent emergency supply. Mounting / Junctions / Connectors - Site-specific solutions - “T”, “L” and “X” nodes offer simple solutions for complex project geometries. Optics - There is 7 optics available from 25° to 120° circular, double 30° and left or right asymmetric. All of these are supplied with reduce glare frosted diffuser offering product flexibility, regardless of installation height - low glare options (19-26 UGR) available. Snap-In-Place "Toolless" Components: Quick to install and easily replaceable luminaires and modules. Emergency, DALI and Sensor options Multiple accessories, including track light modules, suspension or surface mount brackets, and IP54 locking covers.
TYPICAL APPLICATIONS
Education
For schools, colleges and universities, we offer a vast range of efficient LED classroom lighting solutions that will deliver long term cost savings.
Factories
Designed to meet CIBSE and HSE standards, our lighting systems improve safety, visibility and compliance across manufacturing and industrial environments.
Fencing
Fencing salle lighting solutions to ensure safety while meeting all recommended lux levels for both practice and competition bouts.
Offices
We offer a selection of office lighting, LED Office Lighting includes a choice of LED ceiling lights, ceiling panel lights, linear fittings and downlights.
Public Sector
For local government and the public sector, Kellwood Lighting provide money-saving LED lighting solutions for schools, hospitals, care homes and more.
Tennis
Outdoor tennis court floodlights and low glare indoor tennis court lighting, with appropriate LUX levels for the environment, operated via smart controls.
Retail
Based in the UK, with global distribution, we offer a superb choice of stylish and efficient LED lights for shops, shopping malls and shopping centres.
Supermarket
For shops, supermarkets and shopping malls, we offer energy efficient LED lighting solutions for sales floors that minimise energy consumption.
Warehouses
Vast range of LED warehouse high bay lights, low bay lights and other warehouse lighting fixtures, including lights suitable for commercial storage spaces.
- Production Halls
- Indoor Sports Facilities
GALLERY
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SPECIFICATIONS
| Chip Brand, Model, & Size | Everlight 67-21S/KK4C |
|---|---|
| Light Emmission | Direct |
| CCT | 3000K, 4000K, 5000K, 6000K |
| CRI | ≥80Ra, (≥95Ra optional) |
| SDCM | <6, (<3 optional) |
| Diffusers | Frosted, (Clear, Diffused optional) |
| Symmetric Light Distribution | 120°, (25°, 60° optional) |
| Asymmetric Light Distribution | D3 (Double 30°), LA1 (Left Asymmetric), RA1 (Right Asymmetric) |
| System Operating Power | BOS2-35B: 35W; BOS2-50B: 50W; BOS2-70B: 70W; BOS2-70C: 70W; BOS2-100C: 100W; BOS2-140C: 140W |
|---|---|
| Driver Brand | Own Brand (D1, D2, D3, D4 (Non-Dim) with Tridonic Driver) |
| Driver Model | BOS2-35B: CSD2S-35; BOS2-50B: CSD2S-50; BOS2-70B: CSD2S-70; BOS2-70C: CSD2S-35; BOS2-100C: CSD2S-50; BOS2-140C: CSD2S-70 |
| Typical Driver Lifetime | 50,000 hours |
| Input Voltage | 220-240VAC |
| Input Frequency | 50-60Hz |
| Qty of Drivers per Light | BOS2-35B: 1; BOS2-50B: 1; BOS2-70B: 1; BOS2-70C: 2; BOS2-100C: 2; BOS2-140C: 2 |
| Inrush Current (Non-Dimming Driver) | 5A |
| Power Factor | >0.95 |
| THD | <15% (220-240VAC) |
| Insulation Class | Class I |
| Surge Protection/Fusing | 1.5kV |
| IP Rating | IP20, (IP54 only available for 1500mm “B” length) |
|---|---|
| IK Rating | IK04 |
| Ambient Usage Tolerance | -10°C to 40°C |
| Ambient Storage Tolerance | -40°C to 85°C |
| Ambient Humidity Tolerance | 10% to 80% RH |
| Product Dimensions: LxWxH (mm) | 1500mm (B): 1500 x 70 x 77; 3000mm (C): 3000 x 70 x 77 |
|---|---|
| Qty of Modules | BOS2-50B: 1; BOS2-100C: 2 |
| Electrical Connection | Terminal Block |
| Fixture Weight | BOS2-35B: 2.0kg; BOS2-50B: 2.2kg; BOS2-70B: 2.4kg; BOS2-70C: 4.2kg; BOS2-100C: 4.6kg; BOS2-140C: 4.8kg |
| Fixture Primary Material(s) | Mild Steel |
| Fixture Finish | Painted |
| Lens(es) Materials | UV Stabilised PMMA |
| Dimming Options | 1-10V, DALI |
|---|---|
| Compatible intelligent lighting systems | Wireless Controls and Monitoring |
| Mounting Styles | Surface mounted, cable suspended |
|---|---|
| Miscellaneous Accessories | Emergency (Remote Test) |
| Available Product Colours | White (RAL9016), Grey, Black |
| Emergency Variant Code | E3R1 |
|---|---|
| Test Method | Remote-Test |
| Style | Integrated |
| Output Power in Emergency Mode | 6W |
| Emergency Lumen Output @ CRI>80, 4000K CCT | <954lm |
| Emergency Correction Factor | BOS2-35B: 0.171; BOS2-50B: 0.120; BOS2-70B and BOS2-70C: 0.085; BOS2-100C: 0.060; BOS2-140C: 0.042 |
| IP Rating | IP20 |
| Battery Chemical Composition | Ni-MH AA |
| Battery Configuration | 12 Cell Stick |
| Battery Capacity | 21,600mAh |
| Battery Output Voltage | 14.4V |
| Battery Output max Current | 75mA |
| Output Power Duration | 3 hours |
| Time to Charge | 16 hours |
| Ambient Product Usage Tolerance | 25°C to 60°C |
| Ambient Product Storage Tolerance | -40°C to 85°C |
| Product Dimensions 1 | 210 x 45 x 30 |
Accessories (ordered separately) All accessories
BOS2-T1-WH-8CT node connector
BOS2-T2-WH-8CReversed T node connector
BOS2-L1-WH-8CL node connector
BOS2-L2-WH-8CReversed L node connector
BOS2-X-WH-8CX node connector
BOS2-FN-8CFeed-in connector
BOS2-NF-WH-8CPower feed-in connector, white, 8 core
BOS2-NO-WH-8CPower output connector, white, 8 core
BOS2-EBEnd block
BOS2-EC#-WHEndcap (“1” includes the depth of the light, “2” the depth of the PC diffuser)BOS2-TS-[size]-[colour]-[cores]Trunking start section (size B 1500mm or C 3000mm)BOS2-TN-[size]-[colour]-[cores]Trunking middle sectionBOS2-TE-[size]-[colour]-[cores]Trunking end capBOS2-BC-A-WHPolycarbonate blank cover (A 600mm, B 1500mm)BOS2-SKSurface mount kitBOS2-HKHook and bracket setBOS2-CS-30Wire suspension and bracket set| 35B | 35W nominal. 1,500 × 70 × 77 mm, 1 module, 2.0 kg (excludes bracketry). Driver 1 × CSD2S-35 (own brand; Tridonic for D4). CE, RoHS, CB, UL, DLC, GS, SAA, ErP. |
|---|---|
| 50B | 50W nominal. 1,500 × 70 × 77 mm, 1 module, 2.2 kg (excludes bracketry). Driver 1 × CSD2S-50 (own brand; Tridonic for D4). CE, RoHS, CB, UL, DLC, GS, SAA, ErP. |
| 70B | 70W nominal. 1,500 × 70 × 77 mm, 1 module, 2.4 kg (excludes bracketry). Driver 1 × CSD2S-70 (own brand; Tridonic for D4). CE, RoHS, CB, UL, DLC, GS, SAA, ErP. |
| 70C | 70W nominal. 3,000 × 70 × 77 mm, 2 modules, 4.2 kg (excludes bracketry). Driver 2 × CSD2S-35 (own brand; Tridonic for D4). CE, RoHS, CB, UL, DLC, GS, SAA, ErP. |
| 100C | 100W nominal. 3,000 × 70 × 77 mm, 2 modules, 4.6 kg (excludes bracketry). Driver 2 × CSD2S-50 (own brand; Tridonic for D4). CE, RoHS, CB, UL, DLC, GS, SAA, ErP. |
| 140C | 140W nominal. 3,000 × 70 × 77 mm, 2 modules, 4.8 kg (excludes bracketry). Driver 2 × CSD2S-70 (own brand; Tridonic for D4). CE, RoHS, CB, UL, DLC, GS, SAA, ErP. |
A run is lights on pre-wired trunking: trunking start, middle and end sections, end caps, a power feed-in connector and brackets. Lights and trunking must have the same core count (5C, 8C or 12C).
Example run 1 (7.5m, cable suspended, rear feed): 5 × BOS2-50B-850-90-D1-WH-8C, 1 × BOS2-TS-B-WH-8C, 3 × BOS2-TN-B-WH-8C, 1 × BOS2-TE-B-WH-8C, 2 × BOS2-EC1-WH, 1 × BOS2-FN-8C, 3 × BOS2-HK.
Every optic comes with the part-frosted (FR) reduced-glare diffuser as standard.
IP54 is only available for the 1500mm (B) length.
Electrical parameters are for D1 drivers unless otherwise stated. Fixture weights exclude bracketry.
If more than one modification is required, separate each modification with a hyphen at the end of the product code.
