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T12 Ballasts

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  • 2x F96T8HO, 120-277V, Instant Start, Distributor Pack - main product image
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    2x F96T8HO, 120-277V, Instant Start, Distributor Pack

    KST-KTEB-286HO-UV-IS-N-DP
    $78.08
    2x F96T8HO, 120-277V, Instant Start, Distributor Pack is a Keystone electronic fluorescent for linear fluorescent retrofit and maintenance projects.This Keystone item is configured for linear fluorescent retrofit and maintenance projects. Key selection...
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    $78.08
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  • 2x F96T12, 120-277V, 9" case - main product image
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    2x F96T12, 120-277V, 9" case

    KST-KTEB-275-UV-TP-PIC-SL-DP
    $45.54
    2x F96T12, 120-277V, 9" case is a Keystone electronic fluorescent for replacement and maintenance work where electrical compatibility must match the fixture.This Keystone item is configured for replacement and maintenance work where electrical...
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    $45.54
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  • 2xF96T12 Ballast, 120-277V Input, 9" Case - main product image
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    2xF96T12 Ballast, 120-277V Input, 9" Case

    KST-KTEB-275-UV-TP-PIC-SL-CP
    $45.54
    2xF96T12 Ballast, 120-277V Input, 9" Case is a Keystone electronic fluorescent for replacement and maintenance work where electrical compatibility must match the fixture.This Keystone item is configured for replacement and maintenance work where...
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    $45.54
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  • 2x F96T12 75W & 60W, 120-277V, 11" case, Electronic - main product image
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    2x F96T12 75W & 60W, 120-277V, 11" case, Electronic

    KST-KTEB-275-UV-TP-PIC-DP
    $45.54
    2x F96T12 75W & 60W, 120-277V, 11" case, Electronic is a Keystone electronic fluorescent for linear fluorescent retrofit and maintenance projects.This Keystone item is configured for linear fluorescent retrofit and maintenance projects. Key...
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    $45.54
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  • 2 Lite F96T12, 120V, 9" Case, Distributor Pack - main product image
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    2 Lite F96T12, 120V, 9" Case, Distributor Pack

    KST-KTEB-275-1-TP-PIC-SL-DP
    $41.85
    2 Lite F96T12, 120V, 9" Case, Distributor Pack is a Keystone electronic fluorescent for linear fluorescent retrofit and maintenance projects.This Keystone item is configured for linear fluorescent retrofit and maintenance projects. Key selection...
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    $41.85
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  • 2x F40T12, HPF, 120-277V, Electronic - main product image
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    2x F40T12, HPF, 120-277V, Electronic

    KST-KTEB-240-UV-TP-PIC-DP
    $27.92
    2x F40T12, HPF, 120-277V, Electronic is a Keystone electronic fluorescent for linear fluorescent retrofit and maintenance projects.This Keystone item is configured for linear fluorescent retrofit and maintenance projects. Key selection points include...
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    $27.92
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  • 2x F40T12, HPF, 120-277V, Electronic - main product image
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    2x F40T12, HPF, 120-277V, Electronic

    KST-KTEB-240-UV-TP-PIC-CP
    $27.92
    2x F40T12, HPF, 120-277V, Electronic is a Keystone electronic fluorescent for replacement and maintenance work where electrical compatibility must match the fixture.This Keystone item is configured for replacement and maintenance work where electrical...
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    $27.92
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  • 2x F96T12HO, 120-277V, Electronic - main product image
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    2x F96T12HO, 120-277V, Electronic

    KST-KTEB-2110-UV-TP-PIC /A-DP
    $73.92
    2x F96T12HO, 120-277V, Electronic is a Keystone electronic fluorescent for linear fluorescent retrofit and maintenance projects.This Keystone item is configured for linear fluorescent retrofit and maintenance projects. Key selection points include...
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    $73.92
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  • CARTON PACK, 2x F96T12HO, 120-277V, narrow 11 inch case, ELECTRONIC - main product image
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    CARTON PACK, 2x F96T12HO, 120-277V, narrow 11 inch case, ELECTRONIC

    KST-KTEB-2110-UV-TP-PIC /A-CP
    $73.92
    CARTON PACK, 2x F96T12HO, 120-277V, narrow 11 inch case, ELECTRONIC is a Keystone electronic fluorescent for replacement and maintenance work where electrical compatibility must match the fixture.This Keystone item is configured for replacement and...
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    $73.92
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  • 1x F40T12, 120V, NPF, Electronic - main product image
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    1x F40T12, 120V, NPF, Electronic

    KST-KTEB-140-1-TP-EMI /C-DP
    $21.85
    1x F40T12, 120V, NPF, Electronic is a Keystone electronic fluorescent for replacement and maintenance work where electrical compatibility must match the fixture.This Keystone item is configured for replacement and maintenance work where electrical...
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    $21.85
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  • 1x F32T8 or F40T12, 120V, NPF, Electronic
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    1x F32T8 or F40T12, 120V, NPF, Electronic

    KST-KTEB-132-1-TP-EMI-CP
    $28.46
    1x F32T8 or F40T12, 120V, NPF, Electronic is a Keystone electronic fluorescent for linear fluorescent retrofit and maintenance projects.This Keystone item is configured for linear fluorescent retrofit and maintenance projects. Key selection points...
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    $28.46
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  • KTEB-240-1-TP-PIC / B Series - main product image
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    Keystone 120V Black Replacement Ballast Series

    KST-KTEB-240-1-TP-PIC/B-SERIES
    $26.38
    Keystone 120V Black Replacement Ballast Series groups Keystone models in the same series so customers can choose the needed option without leaving the product page. It is suited for replacement and maintenance work where electrical compatibility must...
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    $26.38
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  • KTEB-220-1-TP-EMI / C Series - main product image
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    Keystone 13W 120V Replacement Ballast Series

    KST-KTEB-220-1-TP-EMI/C-SERIES
    $37.77
    Keystone 13W 120V Replacement Ballast Series groups Keystone models in the same series so customers can choose the needed option without leaving the product page. It is suited for replacement and maintenance work where electrical compatibility must match...
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    $37.77
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  • KTEB-120-1-TP-EMI / C Series - main product image
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    Keystone 60W 120V Replacement Ballast Series

    KST-KTEB-120-1-TP-EMI/C-SERIES
    $21.85
    Keystone 60W 120V Replacement Ballast Series groups Keystone models in the same series so customers can choose the needed option without leaving the product page. It is suited for replacement and maintenance work where electrical compatibility must match...
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    $21.85
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  • Electronic Plastic Sign Ballast, Instant Start, 120-277V
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    Electronic Plastic Sign Ballast, Instant Start, 120-277V

    HLT-ESB/0432/14
    $121.65
    Compact electronic plastic sign ballast with instant start for T12HO and T8HO lamps, operating voltages 120-277V and adjustable lamp configurations. Key Features and Benefits Instant start for energy efficiency and extended lamp...
    Qty in Cart: 0
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    $121.65
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  • 40W T12 Medium Bi-pin Base, Cool White, High Efficacy
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    40W T12 Medium Bi-pin Base, Cool White, High Efficacy

    E-F40T12/CW/HE
    $5.85
    40W T12 fluorescent tube with medium bi-pin base, 4100K cool white color temperature, and high color rendering index of 90. Key Features and Benefits High color rendering index (CRI) of 90 Cool white color temperature of...
    Qty in Cart: 0
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    $5.85
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T12 fluorescent ballasts power the older T12 lamp format, the 1.5-inch diameter fluorescent tubes that were the commercial standard prior to the widespread adoption of the more efficient T8 format. While new T12 lamp production has been phased out in the United States under EPACT energy regulations, a significant installed base of T12 fixtures remains in older commercial buildings, schools, warehouses, and industrial facilities that have not yet completed a retrofit to T8 or LED.

Facility maintenance teams maintaining legacy T12 systems need replacement ballasts to keep existing fixtures operational until a planned retrofit or renovation occurs. T12 ballasts are available in magnetic (core-and-coil) and electronic types. Electronic T12 ballasts are compatible with certain T12 lamp types and offer improvements in efficiency and flicker reduction compared to the magnetic designs they replace. It is worth noting that some T12 fixtures can be converted to T8 operation using a compatible T8 ballast and T8 lamps with appropriate adapters, which may be a practical path forward for facilities managing long-term ballast replacement costs.

RelightDepot carries T12 ballasts in magnetic and electronic configurations for facilities maintaining legacy fluorescent systems. For modern fluorescent alternatives, browse our T8 Ballasts and T5 and T5HO Ballasts. Replacement fluorescent lamps across all tube sizes are available in our Fluorescent Lamps section. The complete Fluorescent Ballasts category is organized by lamp type for easy cross-referencing.