105
105° circular (FROSTED DIFFUSER)
Symmetric
Frosted
Measured, STO-18A-740-105
Hazardous Area · Linear
Atex Linear Light
Order code STO-18A-757-105-V4-TM-GR-I1
2,502 lm
CRI>70, 5700K. 105° circular (FROSTED DIFFUSER) optic. GR Grey (RAL7040).
No lumen is published for that combination.
Measured file STO-18A-757-105: 2,582 lm at 18.52 W (139.4 lm/W).
18W nominal. 600 × 110 × 103 mm, 1 module, 2.7 kg. Driver MOONS’ MU060H105AQ_MB/AUX. CE, RoHS, ATEX, IECEx.
The Stone Series is a high-performance, explosion-proof lighting solution designed for Zone 1 and Zone 2 hazardous areas. Its slim linear design makes it ideal for industrial environments such as petrochemical plants, manufacturing facilities, and processing areas.
Built from copper-free aluminium with a UV-stabilised polycarbonate diffuser, it features IP66 ingress protection and IK08 impact resistance for reliable use in harsh conditions. Delivering up to 139 lm/W with L70 ≥100,000 hours, it ensures energy-efficient, low-maintenance operation.
With a wide -40°C to +55°C operating range, multiple mounting options, and ATEX & IECEx certification, the Stone Series is a durable, versatile solution for general-purpose hazardous area lighting.
| Series code | STO |
|---|---|
| Nominal power | 18W to 64W |
| Efficacy | 126lm/W to 139lm/W @ CRI>70, 5700K CCT |
| Lumen output | 2,502lm to 8,064lm |
| Lumen maintenance | L70B50 ≥100,000 hours @ 25°C |
| Certification | CE, RoHS, ATEX, IECEx |
| Warranty | 5 Years |
Sheet lumen at CRI>70, 5700K, with no modification: 18A 2,502 lm, 36A 4,824 lm, 48A 6,288 lm, 36C 4,716 lm, 48C 6,288 lm, 64C 8,064 lm. Another CRI, or a modification, still prints the order code and leaves the lumen blank. 18 measured files give 113.5 to 139.4 lm/W; the measured figure for the chosen optic shows under the code.
Questions for Adam list what the sheet and the measured files do not settle yet.
105° circular (FROSTED DIFFUSER)
Symmetric
Frosted
Measured, STO-18A-740-105
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.

For oil refinery lighting and for the petro-chemical sector, Kellwood Lighting offer a range of marine grade LED ATEX / IECEx approved lighting products.

These lights provide sufficient coverage for vehicle loading and unloading of Hazardous Substances while providing resistance against hazardous conditions.

Lighting for Distilleries must find a balance between style and function; lights must offer optimum performance in vapour-filled environments.
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| Chip Brand, Model, & Size | Osram GW PSLT33.PM |
|---|---|
| Chip Efficacy @ CRI>70, 4000K CCT | 164 lm/W |
| Light Emmission | Direct |
| CCT | 5700K, (3000K, 4000K, 5000K optional) |
| CRI | ≥70 |
| Diffusers | Frosted |
| Symmetric Light Distribution | 105° |
| System Operating Power | STO-18A: 18W; STO-36A: 36W; STO-48A: 48W; STO-36C: 36W; STO-48C: 48W; STO-64C: 64W |
|---|---|
| Driver Brand | MOONS’ |
| Driver Model | MU060H105AQ_MB/AUX |
| System Power Factor | >0.98 |
| Typical Driver Lifetime | 50,000 to 100,000 Hours |
| Input Voltage | 100-277VAC |
| Input Frequency | 50-60Hz |
| Power Factor | >0.98 |
| THD | <10% |
| Insulation Class | I |
| Surge Protection/Fusing | 4 to 6kV |
| IP Rating | IP66 |
|---|---|
| IK Rating | IK08 |
| Ambient Usage Tolerance | -40°C to 55°C |
| Ambient Storage Tolerance | -20°C to 40°C |
| Product Dimensions: LxWxH (mm) | 600mm (18A, 36A, 48A): 600 x 110 x 103; 1200mm (36C, 48C, 64C): 1200 x 110 x 103 |
|---|---|
| Qty of LED Chips | STO-18A: 64; STO-36A: 96; STO-48A: 128; STO-36C: 96; STO-48C: 128; STO-64C: 192 |
| Qty of Modules | STO-18A: 1; STO-36A: 1; STO-48A: 1; STO-36C: 2; STO-48C: 2; STO-64C: 2 |
| Wire-In-Wire-Out Installation | Yes |
| Inlet Thread | M20 (M20x1.5), M25 (M25x1.5), NPT3/4” |
| Gland Type | Brass with Nickel Plated Non-Armoured (Armoured optional) |
| Suitable Cable Size (ø) | M20 = 6.1-13.2mm, M25 = 9.5-15.9mm, NPT3/4” = 12.5-20.5mm |
| Fixture Weight | 600mm: 2.7kg; 1200mm: 4.3kg (excludes bracketry) |
| Fixture Primary Material(s) | Aluminium Alloy & Stainless Steel Fixings (Copper-free Aluminium Alloy) |
| Fixture Finish | Powder Coated |
| Lens(es) Materials | UV Stabilised Polycarbonate |
| Mounting Styles | Twin Surface, Twin Pipe Clamp, Pendant |
|---|---|
| Available Product Colours | Grey (RAL7040) |
| Division | ATEX Zone 1 & 21 and 2 & 22 |
|---|---|
| Product marking | II 2 G D, Ex eb mb IIC T* Gb, Ex tb IIIC T* Db |
| Temperature class, -40° to 55°C (Ta) | Gas T6, dust T80°C (18W to 64W) |
| Temperature class, -40° to 65°C (Ta) | Gas T5, dust T95°C (18W to 64W) |
| Certificate numbers | ATEX: TPS 24 ATEX 114950 0008 X; IECEx: IECEx TPS 24.0002 X |
| 18A | 18W nominal. 600 × 110 × 103 mm, 1 module, 2.7 kg. Driver MOONS’ MU060H105AQ_MB/AUX. CE, RoHS, ATEX, IECEx. |
|---|---|
| 36A | 36W nominal. 600 × 110 × 103 mm, 1 module, 2.7 kg. Driver MOONS’ MU060H105AQ_MB/AUX. CE, RoHS, ATEX, IECEx. |
| 48A | 48W nominal. 600 × 110 × 103 mm, 1 module, 2.7 kg. Driver MOONS’ MU060H105AQ_MB/AUX. CE, RoHS, ATEX, IECEx. |
| 36C | 36W nominal. 1200 × 110 × 103 mm, 2 modules, 4.3 kg. Driver MOONS’ MU060H105AQ_MB/AUX. CE, RoHS, ATEX, IECEx. |
| 48C | 48W nominal. 1200 × 110 × 103 mm, 2 modules, 4.3 kg. Driver MOONS’ MU060H105AQ_MB/AUX. CE, RoHS, ATEX, IECEx. |
| 64C | 64W nominal. 1200 × 110 × 103 mm, 2 modules, 4.3 kg. Driver MOONS’ MU060H105AQ_MB/AUX. CE, RoHS, ATEX, IECEx. |
Fixture weights exclude bracketry.
Wire-in-wire-out products are supplied with one non-armoured ATEX certified gland and one ATEX certified blanking plug. Armoured cable glands are an option; contact Kellwood.
The stated cable size applies to the standard gland; armoured cable may vary.
If more than one modification is required, separate each modification with a hyphen at the end of the product code.
Modifications which affect light output have separate photometric files identified with +(modification).
Alternative drivers may be available. Contact the office for further details.
If the product is customised, the code is altered.
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