Philips Lighting T8 LED Tube 8...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$73.26
$18.31

Philips Lighting T8 LED Tube 8.5W 4000K Cool White Dimmable InstantFit

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Model: 539874
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$73.26
$18.31
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Philips Lighting T8 LED Tube 8.5W 4000K Cool White Dimmable InstantFit

Professional LED lighting solution with InstantFit compatibility

Philips Lighting delivers professional-grade T8 LED tube lighting with 8.5W power consumption and 4000K cool white output. This dimmable InstantFit solution provides excellent compatibility with existing ballasts while delivering 1400 lumens at 164 lm/W efficacy. The G13 medium bi-pin base ensures easy installation across commercial and industrial applications with 120-277V and 347V voltage compatibility.

Professional Features & Benefits

  • 8.5W Power Rating: Energy-efficient operation reduces electricity costs while maintaining bright 1400 lumen output for professional lighting needs.
  • 4000K Cool White: Provides optimal color temperature for office, retail, and industrial environments with 80 CRI for accurate color rendering.
  • InstantFit Technology: Works with over 350 existing ballasts and drivers, offering the easiest upgrade path to LED technology without rewiring.
  • 70,000 Hour Lifetime: Extended operational life minimizes maintenance costs and replacement frequency in commercial installations.
  • Dimmable Capability: Supports lighting control systems for energy savings and ambiance adjustment in professional environments.
  • DLC Standard Certification: Qualifies for utility rebates and meets energy efficiency standards for commercial lighting projects.
  • Wide Voltage Range: 120-277V and 347V compatibility accommodates various electrical systems in commercial and industrial facilities.

Technical Specifications

  • Base: G13 [ Medium Bi-Pin Fluorescent]
  • Beam Angle Nom : 180 �
  • Color Code: 841 [ CCT of 4100K (841)]
  • Color Consistency: <6
  • Color Designation: Cool White (CW)
  • Color Rendering Index Nom : 80
  • Correlated Color Temperature Nom : 4000 K
  • Dimmable: Yes
  • Energy Certifications: DLC Standard
  • Energy Saving Product: Yes
  • Eu Rohs Compliant: Yes
  • Initial Lumen Nom : 1400 lm
  • Input Frequency: 20K to 120K Hz
  • Llmf At End Of Nominal Lifetime Nom : 70%
  • Luminous Efficacy Rated Nom : 164.00 lm/W
  • Nominal Lifetime Nom : 70000 h
  • Power Factor Nom : 0.9
  • Power Rated Nom : 8.5 W
  • Starting Time Nom : 0.5 s
  • Switching Cycle: 50000X
  • T Ambient Max : 45 �C
  • T Ambient Min : -20 �C
  • T Case Maximum Nom : 50 �C
  • T Storage Max : 65 �C
  • T Storage Min : -40 �C
  • Voltage Nom : 120-277, 347 V
  • Warm Up Time To 60 Light Nom : 0.5 s

Installation & Operation

  1. Mount the tube in a suitable T8 fixture with appropriate clearance and access for connections and service.
  2. Connect to compatible ballast or driver following applicable guidelines and the manufacturer's instructions.
  3. Wire according to the provided voltage specifications (120-277V, 347V) and compatible ballast requirements.
  4. Configure any available dimming features as supported by the control system and ballast compatibility.
  5. Test lighting functionality and verify proper performance including dimming operation before placing into service.
  6. Complete final inspection and follow ongoing maintenance practices appropriate to LED tube lighting.

Professional Applications

  • Office Buildings and Corporate Facilities
  • Retail Stores and Shopping Centers
  • Industrial Facilities and Warehouses
  • Parking Garages and Covered Car Parks
  • Educational Institutions
  • Healthcare Facilities
  • Government Buildings

Why Choose Philips Lighting Quality?

Philips Lighting provides reliable LED technology with 70,000-hour lifetime and DLC Standard certification for professional applications. The InstantFit compatibility with over 350 ballasts ensures seamless upgrades, while NSF certification and RoHS compliance demonstrate commitment to quality and environmental standards in commercial lighting solutions.

Manufacturer Resources

Product Specs

Base:
G13 [ Medium Bi-Pin Fluorescent]
Beam Angle Nom:
180 °
Color Code:
841 [ CCT of 4100K (841)]
Color Consistency:
<6
Color Designation:
Cool White (CW)
Color Rendering Index Nom:
80
Correlated Color Temperature Nom:
4000 K
Dimmable:
Yes
Energy Certifications:
DLC Standard
Energy Saving Product:
Yes
Eu Rohs Compliant:
Yes
Initial Lumen Nom:
1400 lm
Input Frequency:
20K to 120K Hz
Llmf At End Of Nominal Lifetime Nom:
70%
Luminous Efficacy Rated Nom:
164.00 lm/W
Nominal Lifetime Nom:
70000 h
Power Factor Nom:
0.9
Power Rated Nom:
8.5 W
Starting Time Nom:
0.5 s
Switching Cycle:
50000X
T Ambient Max:
45 °C
T Ambient Min:
-20 °C
T Case Maximum Nom:
50 °C
T Storage Max:
65 °C
T Storage Min:
-40 °C
Voltage Nom:
120-277, 347 V
Warm Up Time To 60 Light Nom:
0.5 s
Product Type:
LED Tube
Department:
Electrical
Product Subgroup:
Lamps & Bulbs
Product Group:
Lighting
Product Length:
0.787 in
Country Of Origin:
United States
Product Weight:
0.454 lb
Product Color:
Warm White
Product Finish:
Frosted
Product Height:
34.488 in
Product Diameter:
10.35 in
Product Width:
0.787 in

Philips Lighting 539874 – Frequently Asked Questions

1) Do I have to rewire the fixture or bypass the ballast to install the Philips 539874 T8 LED tube?
No rewiring. The 8.5W InstantFit tube runs off the existing fluorescent ballast and drops into the same G13 medium bi-pin sockets you already have, and Philips states InstantFit works with over 350 existing ballasts and drivers. That makes it the fast retrofit option for an occupied office or a live floor: pull the fluorescent lamp, put this one in, done. The tradeoff is that you keep the ballast in the circuit, so when the ballast eventually fails you replace the ballast, not just the lamp. If you would rather remove the ballast from the maintenance picture entirely, that is a ballast bypass (Type B) tube, which is a different product and requires the fixture to be rewired to line voltage.
2) Will an 8.5W LED T8 be bright enough to replace the fluorescent tubes in my office?
1400 lumens at 8.5W, which works out to 164 lm/W. For general office, retail and classroom ambient light that lands in the same range people expect from a standard T8 fluorescent lamp, at roughly a fifth of the wattage. The color is 4000K cool white with 80 CRI, which is the usual choice for offices, corridors and retail where you want neutral white rather than the warmer tone used in hospitality. One caution on layout: LED tubes are directional, and this one is a 180 degree beam, so it throws down into the room rather than up into the reflector the way a fluorescent lamp does.
3) Can I use this Philips LED tube on 347 volt lighting circuits in a Canadian building?
Yes. The 539874 tube is rated 120-277V and 347V, so it covers both the 277V branch circuits common in US commercial buildings and the 347V systems used in Canada. That means one lamp number across a portfolio that mixes both, instead of stocking two. Voltage here is what the ballast sees; the tube itself is fed by the existing ballast, so the ballast also has to be on that circuit voltage.
4) Is this LED tube actually dimmable, and will it dim on my existing controls?
Dimming is supported, which is unusual for an InstantFit lamp and it is the reason to pick this one over a non-dim tube if the space has controls. The dimming is done through the ballast and its control system, not through the lamp, so the lamp has to be on a dimming ballast that Philips lists as compatible. If your fixtures are on non-dim instant-start ballasts today, the tube will still light and run at full output, but you get no dimming until the ballast is changed. Worth confirming your ballast against the InstantFit compatibility list before you commit a large order for a dimmed space.
5) I have 3500K and 4000K tubes mixed across my building. Will this Philips tube match the 4000K fixtures?
At 4000K cool white with a color consistency tighter than 6 SDCM, the 539874 will read as a match alongside other 4000K lamps in the same run of fixtures. It will not match 3500K or 3000K lamps, and mixing color temperatures in one open space or one corridor is obvious to the eye even to people who cannot name what is wrong. If you are relamping a building in stages, do it space by space rather than fixture by fixture so you never leave two color temperatures in the same room.
6) Do LED tubes on an existing ballast still count toward power factor and load calculations?
Rated power factor is 0.9, which clears the 0.9 threshold most commercial energy codes and utility programs set for lighting loads. At 8.5W per lamp the connected load drops sharply against the fluorescent lamps coming out, which matters when you are adding circuits or trying to stay under a lighting power density budget on a tenant improvement. The tube runs on the existing ballast, so the actual input wattage at the panel includes the ballast losses as well.
7) My fixtures have electronic instant-start ballasts running at high frequency. Is that a problem for this tube?
No. The 8.5W InstantFit tube accepts an input frequency from 20 kHz to 120 kHz, which is the operating band electronic T8 ballasts run in. That range is why the lamp can cover so many existing ballasts rather than being tied to one model. What it does not cover is a magnetic ballast, which operates at line frequency; those fixtures need a different retrofit approach.
How fast can I get the Philips Lighting 539874 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Philips Lighting 539874 come with a warranty?
Absolutely. The Philips Lighting 539874 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Philips Lighting 539874?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
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