CATALOG / HCL LINEAR LIGHTS / TARA Trimless Linear - KX917-A

Overview HCL Performance Models Specification Applications Downloads

TARA

TARA Trimless Linear - KX917-A

Invisible Recessed Linear | Bridgelux Full-Spectrum | LTECH Matter | 2700K-6500K

CCT Range

2700K - 6500K Tunable White (Bridgelux full-spectrum)

Colour Rendering

CRI >= 97 (Bridgelux Thrive Ra98 available)

Efficacy

180 lm/W

Output

4500 LM

Request BOM & Spec Sheets Datasheet (PDF)

01 — Why it qualifies as HCL

Circadian performance, stated as measurable numbers

Tunable white is a colour feature. Human Centric Lighting is a measurement obligation. Below are the quantities a lighting designer needs to model BY001 against WELL v2, CIE S 026 and IEC TR 61547-1 — including the ones still awaiting third-party verification.

Melanopic response across the tuning range

2700

3000

3500

4000

5000

5700

6500

Below WELL v2 L03 daytime threshold at the lowest setting

At 2700 K

0.45

M/P Ratio

225

Mel-EDI @ 500 lx

Move the control to see melanopic output across the tuning range.

M/P Ratio

Target >= 0.90 @ 5000K / <= 0.35 @ 2700K

Melanopic DER, CIE S 026:2018, across the tuning range

Design target

Percent Flicker

< 1% (LTECH DALI-2/Matter driver, IEEE 1789 NOEL)

Across the dimming range; IEEE 1789-2015 no-risk region

Design target

SVM

<= 0.40 (LTECH precision PWM)

Stroboscopic visibility measure; IEC TR 61547-1 limit 0.4

Design target

Colour Shift

< 0.003 over full dimming range (LTECH + Bridgelux)

At 6 000 h, Ta 25 °C

Design target

SDCM

<= 1 SDCM (Bridgelux Thrive) / <= 2 SDCM (standard)

MacAdam ellipse, initial, ANSI C78.377

Design target

TM-30-20

Fidelity and gamut index, ANSI/IES TM-30-20

Design target

CRI Ra

CRI >= 97 (Bridgelux Thrive Ra98 available)

Measured at 4000 K reference point

Design target

Glare · UGR

< 19

4H8H, transverse viewing

Design target

SUMLINK Verified — values marked Design target are engineering design values from the driver and LED platform specification, not yet confirmed by independent laboratory report. Verified values are backed by a test report available on request. We publish the distinction rather than the marketing number.

[{"k": 2700, "mp": 0.35, "edi": 175, "note": "Deep warm. Evening and after-hours — M/P at its minimum, below the WELL v2 daytime threshold."}, {"k": 3000, "mp": 0.42, "edi": 210, "note": "Residential warm white. Below the WELL v2 daytime threshold; dining and lounge settings."}, {"k": 3500, "mp": 0.52, "edi": 260, "note": "First step that clears the WELL v2 daytime threshold at 500 lx horizontal (EDI ≥ 250)."}, {"k": 4000, "mp": 0.64, "edi": 320, "note": "Neutral reference point. Colour metrics on this page are stated at 4000 K."}, {"k": 5000, "mp": 0.9, "edi": 450, "note": "Morning activation target (M/P ≥ 0.90) — alerting daylight white for task-dense hours."}, {"k": 5700, "mp": 1.0, "edi": 500, "note": "High circadian stimulus; typical mid-morning peak in a program schedule."}, {"k": 6500, "mp": 1.1, "edi": 550, "note": "Maximum melanopic output. Use in short bursts, not as an all-day setting."}]

02 — Selection

Model selection

Per-SKU dimensions and profiles are released with the BOM. Below is what is confirmed today.

Finish ● Black ○ White · All models 2700–6500 K

POWER

25W

FLUX

4500 LM

CCT

2700K - 6500K Tunable White (Bridgelux full-spectrum)

ENVELOPE

88×34mm cross-section · custom lengths available

FINISH

Matte White | Matte Black

Individual model dimensions, mounting type and per-SKU datasheets are issued on request while the model schedule is finalised.

Request the model schedule

03 — Verification

Full specification

Single source of truth. Nothing here is repeated elsewhere on the page.

Photometric

Luminous flux

4500 LM

Efficacy

180 lm/W

CCT range

2700K - 6500K Tunable White (Bridgelux full-spectrum)

Chromaticity

<= 1 SDCM (Bridgelux Thrive) / <= 2 SDCM (standard)

CRI Ra

CRI >= 97 (Bridgelux Thrive Ra98 available)

R9 > 80 (Bridgelux Thrive)

Duv

< 0.003 over full dimming range (LTECH + Bridgelux)

Distribution

Linear diffuse / Prismatic anti-glare (UGR<19)

Circadian & visual comfort

Melanopic DER

Target >= 0.90 @ 5000K / <= 0.35 @ 2700K

Percent flicker

< 1% (LTECH DALI-2/Matter driver, IEEE 1789 NOEL)

SVM

<= 0.40 (LTECH precision PWM)

Electrical & control

Power

25W

Protocol

LTECH Matter over Thread + DALI-2

Dimming range

0.1% - 100% (LTECH Matter/DALI-2)

Physical & installation

Finish

Matte White | Matte Black

Dimensions

88×34mm cross-section · custom lengths available

IP rating

IP20

Lifetime, compliance & warranty

05 — Resources

Downloads

Product datasheet

AVAILABLE ON REQUEST

IES / LDT photometric files

AVAILABLE ON REQUEST

Installation & DALI wiring

AVAILABLE ON REQUEST

BIM / Revit family

AVAILABLE ON REQUEST

Test reports (Verified metrics)

AVAILABLE ON REQUEST

Warranty & compliance

AVAILABLE ON REQUEST

Specifying this fixture on a live project?

Send the room schedule — we return a BOM, driver and control topology, and the spec sheets for each SKU.

Request BOM & Spec Sheets Talk to a specifier