Surface Mounted LED Downlights COB Square 9W-35W ILED-DL-B S3

The ILED-DL-B S3 is a surface-mounted COB LED downlight with a square housing, built for ceilings where a recessed unit cannot fit. The housing mounts directly onto the ceiling face, so it works in solid concrete slabs, on top of plywood decking, and in rooms with shallow voids. The CREE COB source sits behind a 60° beam optic, which gives a fairly wide pool of light for general and accent use. Because nothing is buried in the ceiling, the unit is also easier to service later: the driver and source are reached without pulling a housing out of a hole.

Models

Four models cover the range:

• ILED-DL3-B S3 9W: 900 lm, housing 90mm x 90mm x 90mm
• ILED-DL4-B S3 18W: 1800 lm, housing 110mm x 110mm x 120mm
• ILED-DL5-B S3 28W: 2800 lm, housing 130mm x 130mm x 135mm
• ILED-DL6-B S3 35W: 3500 lm, housing 160mm x 160mm x 165mm

All four share the same family look, so a project can mix 9W and 35W units in one room without breaking the visual line. Output scales with housing size, which also gives the larger models more surface for heat dissipation. The 9W model is the choice for small rooms and accent spots; the 35W model is the one for open workshop areas and higher ceilings.

Optics and color

The beam angle is 60° on every model, which is a medium spread between a spot and a wash. It suits general lighting in corridors and utility rooms, and covers a counter or shelf without the hot center of a tight spot. Color temperature ranges 2800-6000K, so the fixture covers warm interior tones and cooler work-area tones. CRI is above 92, which keeps fabric, food, and finish colors accurate. The effective output is around 100 lm/W, so the light delivered per watt is consistent across the range.

Construction

The housing is aluminum with a PC component. Bodies come in white or black, chosen at order. The IP rating is IP42 or IP44, so the fixture is fine for dry indoor rooms and the higher grade adds protection against splashes. The electrical classification is Class I. The square body sits flush against the ceiling, and the finish is fixed at order, so the color should be confirmed before delivery.

Controls and electrical

Input is 220-240VAC or 110-277VAC with power factor above 0.9. Control is chosen at order: DALI dimmable, Triac dimmable, or 0-10V dimmable. The DALI version links into a building management system; the Triac version works with standard wall dimmers; the 0-10V version uses a low-voltage control signal. Each control type is a separate driver build, so it should be decided before ordering rather than changed on site.

Installation

Because the fixture mounts on the surface, there is no cutout to make. Fix the housing to the ceiling with the included fittings, wire the driver, then close the unit. On a concrete ceiling, mark the mounting holes and use the correct anchors for the substrate. Always switch off the supply at the breaker before wiring. The mounting face is flat, so an uneven ceiling may need packing behind the housing to sit level.

Where it fits

The S3 suits shops, workshops, corridors, and kitchens where a recessed unit is not possible. It is a common choice for concrete-slab ceilings in commercial buildings, and for retrofit jobs where the ceiling void is too shallow for a recessed housing. The black version is often used in dark industrial-style interiors, where the body disappears against dark paint. The white version is the usual pick for shops and offices.

Warranty and certifications

The ILED-DL-B S3 carries SAA, CE, and RoHS certification, and is covered by a 3-5 year warranty. If the project needs certification documents on file, they can be requested from the sales team.

The ILED-DL-B S3 is a direct answer when a downlight has to mount on the surface instead of into a hole.

• No cutout needed. The housing fixes to the ceiling face, so it works on concrete slabs and shallow voids where a recessed unit cannot go.
• Square family look. Four models from 9W to 35W share the same housing style, so outputs can be mixed in one room without breaking the line.
• Accurate color. CRI above 92 and CCT from 2800K to 6000K cover warm and cool interiors.
• Efficient output. Around 100 lm/W from a CREE COB source keeps energy use low for the light delivered.
• Choice of finish. Bodies come in white or black, so the fixture can match light or dark ceilings.
• Flexible control. DALI, Triac, or 0-10V dimming, selected at order.
• Documented compliance. SAA, CE, and RoHS certification, with a 3-5 year warranty behind the unit.

For surface-mounted downlights, this is the square range we point buyers to first.

The ILED-DL-B S3 suits buildings where the ceiling cannot take a recessed fixture. In shops and showrooms with concrete slabs, the surface housing mounts directly and the 60° beam lights shelves and displays evenly. In workshops and utility rooms, the 18W and 28W models give strong general light without needing a cutout.

In corridors and lobbies, the square body reads as part of the ceiling design, and the white or black finish can match the interior. In kitchens and food counters, the CRI above 92 makes product color read correctly, and the IP42 or IP44 rating covers dry and splash-prone areas.

The 9W model suits small rooms and accent spots; the 35W model covers a wider area with 3500 lm. Because all four share the same family look, a project can mix outputs in one space without breaking the visual line. For dark industrial-style interiors, the black version mounts without standing out against dark paint or steel. For retrofit work, the surface housing avoids cutting into a slab, which keeps dust and debris out of occupied rooms, and the wiring is reached from below without opening the ceiling.

A few points to check before you order the ILED-DL-B S3.

• Body size. Housings run from 90mm to 160mm square, with depths from 90mm to 165mm. Check the projection below the ceiling if headroom is tight.
• Finish. Bodies come in white or black, fixed at order. Confirm the color before delivery.
• Control choice. DALI, Triac, or 0-10V dimming is selected at order. Changing control type after delivery means a different driver.
• Voltage. Confirm whether the project runs 220-240VAC or 110-277VAC and state it with the order.
• IP grade. IP42 or IP44 is chosen at order. State the grade with the order if the location is splash-prone.
• Mounting surface. The housing fixes to the ceiling face. On concrete, use the correct anchors for the substrate, and pack the housing if the surface is uneven.

If anything is unclear, send a message to our sales team before ordering. It costs a minute and avoids a wrong fixture.