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48 Volt DC LED Tube Lamps
Negative 48 Volt for Telecommunications Backup


Telephony equipment operates on negative forty-eight volt DC power systems.

Emergency backup power for telephone systems and many or the major internet service providers and cable service companies are negative or minus 48 volts DC from large battery banks.

In negative 48 volt DC systems the positive side of the battery circuit is the “ground” or earth and the current flow is from the negative side of the backup battery banks to 48 volt devices including emergency lighting.

Telephony and similar equipment uses 48 volts of direct current because DC does not introduce AC noise into the system. The battery current travels better with lower resistance over wiring circuits and 48 volts is just below the electrocution risk threshold.

Feeding circuits from the negative side of the battery minimizes the effect of corrosion. Using positive voltage as ground, corrosion is reduced and the cost of cathodic protection is significantly reduced and effectiveness significantly increased.  Learn more about cathodic protection.

48 volt LED lamps are also an excellent energy saving lighting method of lighting for solar energy systems that use 48 volt battery banks.  You can direct wire from the DC side of your system without using DC to DC converters to make 12 or 24 volts.  Wire size is smaller with significant cost savings.  You also save inverter losses from operating 115 AC LEDs.

Our LED drivers for 48 volts work from both negative and positive feeds.

24 and 48 inch LED tube lamps are typical, but we can manufacture LED lights in any length up to 8 feet with whatever lamp ends, lenses, watts of power, color spectrum and beam angle that meets your requirements. 

We can also provide any type of Edison base screw in light bulb or any other type of base that is available.

Our LED lamps have polycarbonate lens diffusers and reinforced aluminum housings which act both as a heat sink and structural support to provide strength and rigidity. Since the lamps contain no glass, they are ideal for food service and other sanitary environments.

Our light source is super-bright LEDs emitting higher brightness at a lower cost.  Color temperature can be provided to meet your specification.  Our lamps are UV free and RF compliant.

T8 12 Watt 48 Inch 48 Volt LED Tube Lamp

  • Input Voltage  DC 48 V
  • Frequency: 50-60 Hz
  • Power Factor: > 90
  • Length: 1200mm 48 inches
  • Diameter: 26mm 1 inch
  • Power: 12W
  • Lumens: 1050 - 1150
  • LED Type: SMD3528
  • LED Quantity: 171
  • Color: Warm White, Natural White, Cool White
  • Color Rendering Index: > 80
  • PC Lens: Clear, Frosted, Milky
  • Beam Angle: 90 to 130 (available option)
  • Lamp Life Expectancy: 50,000 Hours
  • Operating Temperature: -20 to +85 C or -4 to +185 F
  • Certifications: CE, RoHS, FCC, ISO 9001:2008 

T8 14 Watt 48 Inch 48 Volt LED Tube Lamp

  • Input Voltage  DC 48V
  • Frequency: 50-60 Hz
  • Power Factor: > 90
  • Length: 1200mm 48 inches
  • Diameter: 26mm 1 inch
  • Power: 14W
  • Lumens: 1240 - 1340
  • LED Type: SMD3528
  • LED Quantity: 204
  • Color: Warm White, Natural White, Cool White
  • Color Rendering Index: > 80
  • PC Lens: Clear, Frosted, Milky
  • Beam Angle: 90 to 130 (available option)
  • Lamp Life Expectancy: 50,000 Hours
  • Operating Temperature: -20 to +85 C or -4 to +185 F
  • Certifications: CE, RoHS, FCC, ISO 9001:2008 

T8 16 Watt 48 Inch 48 Volt LED Tube Lamp

  • Input Voltage  DC 48V
  • Frequency: 50-60 Hz
  • Power Factor: > 90
  • Length: 1200mm 48 inches
  • Diameter: 26mm 1 inch
  • Power: 16W
  • Lumens: 1400 - 1500
  • LED Type: SMD3528
  • LED Quantity: 240
  • Color: Warm White, Natural White, Cool White
  • Color Rendering Index: > 80
  • PC Lens: Clear, Frosted, Milky
  • Beam Angle: 90 to 130 (available option)
  • Lamp Life Expectancy: 50,000 Hours
  • Operating Temperature: -20 to +85 C or -4 to +185 F
  • Certifications: CE, RoHS, FCC, ISO 9001:2008 
  • Warranty: 3 Year Free Replacement

T8 18 Watt 48 Inch 48 Volt LED Tube Lamp

  • Input Voltage  DC 48V
  • Frequency: 50-60 Hz
  • Power Factor: > 90
  • Length: 1200mm 48 inches
  • Diameter: 26mm 1 inch
  • Power: 18W
  • Lumens: 1580 - 1680
  • LED Type: SMD3528
  • LED Quantity: 255
  • Color: Warm White, Natural White, Cool White
  • Color Rendering Index: > 80
  • PC Lens: Clear, Frosted, Milky
  • Beam Angle: 90 to 130 (available option)
  • Lamp Life Expectancy: 50,000 Hours
  • Operating Temperature: -20 to +85 C or -4 to +185 F
  • Certifications: CE, RoHS, FCC, ISO 9001:2008 

T8 20 Watt 48 Inch 48 Volt LED Tube Lamp

  • Input Voltage  DC 48V
  • Frequency: 50-60 Hz
  • Power Factor: > 90
  • Length: 1200mm 48 inches
  • Diameter: 26mm 1 inch
  • Power: 20W
  • Lumens: 1750 - 1850
  • LED Type: SMD3528
  • LED Quantity: 285
  • Color: Warm White, Natural White, Cool White
  • Color Rendering Index: > 80
  • PC Lens: Clear, Frosted, Milky
  • Beam Angle: 90 to 130 (available option)
  • Lamp Life Expectancy: 50,000 Hours
  • Operating Temperature: -20 to +85 C or -4 to +185 F
  • Certifications: CE, RoHS, FCC, ISO 9001:2008 
We can supply any size T5, T8, T10 lamp to meet your requirements.  Volume orders earn discounts.  Some lamps are in stock.  Special order delivery takes 2-3 weeks.  Expedited delivery is available.

Planning A Lighting Retrofit Project

This document should be helpful Standard Measurement and Verification Plan for Lighting
Retrofit Projects

Contact Us for Pricing

Purchase one or 1,000.  No minimums.  There are quantity breaks for volume purchases.    Please contact us and advise your requirements, thank you.

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