R 2S40 1 TP

Advance Ballast





The Phillips Advance Ballast R 2S40 1 TP is part of the Mark III brand and is a T12 Magnetic Ballast with Rapid Start with support for 2 lamps. It’s suitable for general use where lights are on for extended amounts of time. The lamp connection is series based and this ballast supports five types of lamps (see table below). This is an older ballast and new supplies may be challenging to find. A newer ballast (RELB-2S40-N) is recommended below – it is suggested to use the newer recommended model unless you want to replace your ballast with the same model.

Buy this ballast/replacement parts:

This ballast has been discontinued by Advance / Philips – new supplies are challenging to find – many. Please click the links below for replacements.

Check pricing for R 2S40 1 TP on Amazon.com

Click here for pricing on Amazon.com for the recommended replacement RELB-2S40-N (to replace an older R 2S40 1 TP). This newer model is an electronic ballast with greater efficiency and supports T12 Lamps at 120V, upto 72 watts.

General Specifications

Brand NameMARK III
Ballast TypeMagnetic
Starting MethodRapid Start
Lamp ConnectionSeries
Input Voltage120
Input Frequency60 HZ

Specifications by Lamp Type and Numbers of Lamps – 120V

Lamp TypeNum. of LampsRated Lamp WattsMin. Start Temp (F°/C°)Input Current (Amps)Input Power (ANSI Watts)Ballast FactorMAX THD %Power FactorMAX Lamp Current Crest FactorB.E.F.
F40T12/U 224050/100.73870.95200.991.61.09


  • Tube type: T12
  • Height (in): 1.5 in
  • Length (in): 9.50 in
  • Width (in): 2.375 in
Input Watts / Input Voltage Range120 V
Ballast Factor
Power Factor
Output wattage32-40

Additional information/Conclusion:

This Advance MARK III Magnetic Fluorescent R 2S40 1 TP is an older profile 2 lamp ballast for indoor industry general office, retrofitting or replacement lighting and features Rapid Start and outputs 32-40W with inputs watts of 120v. A newer ballast is recommended above if original parts are not needed.

Electronic Fluorescent Ballast vs. Magnetic Fluorescent

This Phillips Advance ballast is magnetic fluorescent.

Does R 2S40 1 TP contain PCBs?

R 2S40 1 TP may contain PCBs per Advance’s specifications literature for this ballast especially if the ballast was manufactured before January 1, 1979. Ballasts created after January 1, 1979, were mandated by the US government not to include PCBs. For more information please visit our page on ballast disposal and PCBs.

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Learn about Advance Ballasts and other tools by visiting our homepage

Need help with Advance Ballasts? Visit out home page for help. You can also find helpful articles about general tools, a fluorescent ballast and energy saving lamps. Consider contacting us if you need help finding ballasts – be sure to include your email id so we can write back.