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Today’s world has intensified the need for healthy, clean environments. To address this need, Keystone offers ultraviolet lamps and paired ballasts that offer germicidal UV-C disinfection to protect against viruses and bacteria.

The Keystone UV-C Advantage

The lighting industry has found that pairing between ballasts and UV-C lamps isn’t always dependable. Ballasts are not optimized to work with lamps, so pairing power supplies with lamps can lead to wildly differing outcomes in power output. Among the concerns:

  • No national standard. There is no national standard for UV-C lamps, so products and their outputs vary widely.
  • Indefinite terms. “Output” is a flexible term, as UV-C, which is part of the nonvisible part of the spectrum, doesn’t register in lumens.
  • Uncertain pairings between ballasts and lamps. UV-C lamp output intensity (and therefore effectiveness) depends on the ballast driving it. Without a proper understanding of how a ballast is driving a lamp, there is a lot of room for uncertainty that can lead to insufficient disinfection performance, lamp failure, and/or solutions that are more expensive and larger than they need to be.

Why Keystone?

  • No guesswork. Keystone has taken the guesswork out of the process of matching ballast to lamp by creating a chart of replacement recommendations, so consumers can easily pair a particular ballast with a specific lamp.
  • A full line of lamps and ballasts. In addition, Keystone offers a line of products, including a full selection of lamps and coordinating ballasts, that provide the optimal solution for best performance.
  • Products designed for disinfection. Keystone ballasts and lamps are intended for fixtures specifically designed for disinfection purposes using UV-C 254nm light sources, including those in water purification, HVAC air handling, food processing, clean rooms, and other general sterilization/disinfection needs.

What UV-C does

Ultraviolet light, which includes UV-C, is a widely used sanitization technology. UV-C components are used in advanced treatment technologies in water and air quality applications, including purification, sanitization, and disinfection.

  • What is UV-C? UV-C is a portion of ultraviolet light on the spectrum from 200 to 280 nm.
  • How does UV-C work? UV-C radiation has been proven to effectively inactivate various tested pathogens such as common viruses and bacteria. UV-C radiation damages the molecules of nucleic acids and proteins, which helps to destroy and/or render them harmless. UV-C has been shown to be an effective technology against coronaviruses, E. coli, salmonella, and listeria, among other organisms.
  • What about Covid? Studies have shown that UV-C light can inactivate most SARS-CoV-2 virus particles, the microorganisms that cause Covid. Depending upon whether the virus is present in air or liquid or on surfaces, the process can take anywhere from 30 seconds to 25 minutes.

Ballast Pairing Guide

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Tech Specs

Germicidal Ultraviolet Lamps

Linear

  • T5 Double-Ended Bi-Pin
    Catalog Number Length Base Type Nominal Power Nominal
    Voltage
    Nominal
    Lamp Current
    Peak
    Wavelength
    Average
    Lifetime
    Nominal UV
    Output
    Spec Sheet
    mm inches
    KTL-G4T5-254-DE 135mm 5.31in G5 4.5W 28V 170mA 254nm >8000 hrs 0.9W Download
    KTL-G6T5-254-DE 212mm 8.35in 6W 42V 160mA 0.9W
    KTL-G8T5-254-DE 288mm 11.34in 8W 56V 150mA 2.1W
  • T8 Double-Ended Bi-Pin
    Catalog Number Length Base Type Nominal Power Nominal
    Voltage
    Nominal
    Lamp Current
    Peak
    Wavelength
    Average
    Lifetime
    Nominal UV
    Output
    Spec Sheet
    mm inches
    KTL-G15T8-254-DE 436mm 17.17in G13 15W 51V 340mA 254nm >8000 hrs 4.7W Download
    KTL-G30T8-254-DE 894mm 35.20in 30W 100V 370mA 11.2W
    KTL-G36T8-254-DE 1199mm 47.20in 36W 103V 440mA 15.5W
    KTL-G55T8-254-HO-DE 894mm 35.20in 55W 87V 780mA 17W
    KTL-G75T8-254-HO-DE 1199mm 47.20in 75W 110V 850mA 26W
    KTL-G95T8-254-HO-DE 1500mm 59.06in 95W 124V 620mA 33W
  • T5 Single-Ended 4-Pin
    Catalog Number Length Base Type Nominal Power Nominal
    Voltage
    Nominal
    Lamp Current
    Peak
    Wavelength
    Average
    Lifetime
    Nominal UV
    Output
    Spec Sheet
    mm inches
    KTL-G16T5-254-4P 317mm 12.48in G10q 16W 37V 425mA 254nm >8000 hrs 4.3W Download
    KTL-G17T5-254-4P 357mm 14.06in 17W 51V 425mA 5.7W
    KTL-G22T5-254-4P 436mm 17.17in 21W 62V 425mA 7.3W
    KTL-G36T5-254-4P 843mm 33.19in 40W 120V 425mA 15W
    KTL-G150T5-254-HO-4P 1554mm 61.18in 150W 220V 800mA 45W
  • Compact

  • Compact 2-Pin
    Catalog Number Length Base Type Nominal Power Nominal
    Voltage
    Nominal
    Lamp Current
    Peak
    Wavelength
    Average
    Lifetime
    Nominal UV
    Output
    Spec Sheet
    mm inches
    KTL-G5PLS-254-G23 85mm 3.35in G23 5W 34V 180mA 254nm >8000 hrs 1.1W Download
    KTL-G9PLS-254-G23 145mm 5.71in 9W 60V 170mA 2.4W
    KTL-G13PLS-254-GX23 165mm 6.5in GX23 13W 60V 290mA 3.4W
  • Long Compact 4-Pin
    Catalog Number Length Base Type Nominal Power Nominal
    Voltage
    Nominal
    Lamp Current
    Peak
    Wavelength
    Average
    Lifetime
    Nominal UV
    Output
    Spec Sheet
    mm inches
    KTL-G18PLL-254-2G11 217mm 8.54in 2G11 18W 60V 370mA 254nm >8000 hrs 5.8W Download
    KTL-G36PLL-254-2G11 410mm 16.14in 36W 105V 440mA 12W
    KTL-G55PLL-254-2G11 530mm 20.87in 55W 103V 540mA 18W
    KTL-G95PLL-254-HO-2G11 530mm 20.87in 95W 100V 950mA 33W
  • Ballasts for UVC Lamps

  • Compact Case
    Catalog Number Lamp Type Number of Lamps Input Volts (V) Input Power (W) Lamp Current (mA) Lamp Power (W) per
    lamp
    Spec Sheet
    KTG15-2L-150-UV-PS-C1 KTL-G4T5-254-DE 1 120 5.9 150 3.4 Download
    277 6.2 150 3.4
    2 120 9.7 150 3.4
    277 10 150 3.5
    KTL-G6T5-254-DE 1 120 7.9 150 5.2
    277 8.6 150 5.4
    2 120 13.7 150 5.1
    277 13.6 150 5.1
    KTL-G8T5-254-DE 1 120 10.1 150 7.2
    277 10.4 150 7.1
    2 120 17.9 150 7
    277 17.7 150 7
    KTG40-2L-300-UV-PS-C1 KTL-G15T8-254_DE 1 120 18 300 14 Download
    277 18 300 14
    2 120 32 295 14
    277 32 295 14
    KTL-G30T8-254-DE 1 120 34 295 29
    277 33 295 29
    KTL-G36T8-254-DE 1 120 42 295 37
    277 42 295 37
    KTG45-2L-370-UV-PS-C1 KTL-G16T5-254-4P (GPH317T5L/4P) 1 120 19 380 12 Download
    277 19 380 12
    2 120 36 350 13
    277 35 350 13
    KTL-G17T5-254-4P (GPH357T5L/4P) 1 120 20 370 14
    277 21 370 14
    2 120 36 350 14
    277 35 350 13
    KTL-G22T5-254-4P 1 120 24 370 17
    277 24 370 17
    2 120 42 340 16
    277 41 340 16
    KTL-G36T5-254-4P 1 120 42 370 34
    277 41 370 34
    KTL-G18PLL-254-2G11 1 120 21 390 16
    277 22 390 17
    2 120 38 360 15
    277 37 360 15
    KTL-G36PLL-254-2G11 1 120 37 380 31
    277 38 380 32
    KTL-G30T8-254-DE 1 120 39 370 31
    277 38 370 30
    KTL-G36T8-254-DE 1 120 52 370 43
    277 52 370 46
    KTG75-1L-800-UV-PS-C2 KTL-G55T8-254-HO-DE 1 120 61 820 52 Download
    277 60 820 50
    KTL-G75T8-254-HO-DE 1 120 74 810 63
    277 74 810 63
  • Linear Case Type
    Catalog Number Lamp Type Number of Lamps Input Volts (V) Input Power (W) Lamp Current (mA) Lamp Power (W) per lamp Spec Sheet
    KTG200-2L-500-UV-PS-L4 KTL-G95T8-254-HO-DE 1 120 71 510 64 Download
    277 74 510 65
    2 120 136 490 62
    277 134 490 612
    KTL-G55PLL-254-2G11 1 120 53 520 48
    277 54 520 48
    2 120 104 500 49
    277 99 500 47
    KTG100-2L-480-UV-PS-L1 KTL-G16T5-254-4P (GPH317T5L/4P) 1 120 19 490 15 Download
    277 19 490 15
    2 120 35 480 15
    277 35 480 15
    KTL-G17T5-254-4P (GPH357T5L/4P) 1 120 21 490 17
    277 21 490 17
    2 120 39 480 17
    277 39 480 17
    KTL-G22T5-254-4P 1 120 25 485 21
    277 25 485 21
    2 120 48 475 21
    277 47 475 21
    KTL-G36T5-254-4P 1 120 48 480 42
    277 47 480 42
    2 120 89 455 40
    277 87 455 40
    KTL-G36T8-254-DE 1 120 60 480 53
    277 59 480 53
    2 120 108 445 50
    277 107 445 50
    KTL-G36PLL-254-2G11 1 120 46 485 42
    277 46 485 42
    2 120 88 460 40
    277 87 460 40
    KTG75-2L-350-UV-PS-L1 KTL-G15T8-254-DE 1 120 18 350 16 Download
    277 18 350 16
    2 120 34 345 15
    277 34 345 15
    KTL-G30T8-254-DE 1 120 34 350 31
    277 34 350 31
    2 120 68 345 31
    277 67 345 31
    KTL-G36T8-254-DE 1 120 45 350 42
    277 45 350 42
    KTL-G16T5-254-4P (GPH317T5L/4P) 1 120 15 350 12
    277 15 350 12
    2 120 28 345 13
    277 28 345 13
    KTL-G17T5-254-4P (GPH357T5L/4P) 1 120 18 350 15
    277 18 350 15
    2 120 33 345 15
    277 33 345 15
    KTL-G22T5-254-4P 1 120 20 350 18
    277 20 350 18
    2 120 39 345 18
    277 39 345 18
    KTL-G36T5-254-4P 1 120 39 350 36
    277 39 350 36
    2 120 75 340 35
    277 74 340 35
    KTL-G18PLL-254-2G11 1 120 19 350 16
    277 19 350 16
    2 120 35 345 16
    277 35 345 16
    KTL-G36PLL-254-2G11 1 120 37 350 34
    277 37 350 34
    2 120 75 340 34
    277 73 340 34
    KTG100-1L-800-UV-PS-L2 KTL-G55T8-254-HO-DE 1 120 57 825 52 Download
    277 57 825 52
    KTL-G75T8-254-HO-DE 1 120 76 815 70
    277 76 815 70
    KTL-G95PLL-254-HO-2G11 1 120 91 805 85
    277 91 805 85
    KTG150-1L-840-UV-PS-L3 KTL-G150T5-254-HO-4P 1 120 123 830 116 Download
    277 123 830 116

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