B234SR120M-A Universal Ballast - F34T12 or F40T12 Fluorescent Tubes

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Bulk discount rates

Below are the available bulk discount rates for each individual item when you purchase a certain amount

Buy 50 or above and get 5% off
  • B234SR120M-A Universal
  • B234SR120M-A Universal Ballast Wiring
  • B234SR120M-A Universal Ballast Dimensions
  • B234SR120M-A Universal
MSRP: $16.00
Now: $11.75
Was: $16.00
— You save $4.25


UNIVERSAL Electronic Fluorescent Ballast, 120V, Two F40T12, F40T12ES, F34T12, F32T12, or F40T10 Linear and U-bend Lamps, Rapid Start Ballast.

Universal Electronic Fluorescent F40T12 or F34T12 Replacement Ballast

Basic-12® ballasts are the ideal replacement for magnetic T12 ballasts. Save 20% on energy without changing the lamp or fixture! 

More than 500 in stock and ready to ship same day!

  • 20% increase in efficiency - lowers lighting operation cost
  • Full Light Output - same level as magnetic equivalent
  • Quite Operation - much quieter that magnetic equivalent
  • High Frequency Operation - no lamp flickering
  • Light weight and low profile case - simplifies install with less cover interference in fixture
  • Excellent 3 year warranty 
  • UL Listed (Class P, Type 1 Outdoor), CSA Certified
Equivalent Replacement for:
  • Osram Sylvania MB2X40/120RS, QTP2X40T12/120RSN-B
  • Advance Philips R-2S34-TP, R-2S40-TP, Mark III, R-2S40-1-TP, RK-2S34-TP, RK-2S40-TP, RELB-2S40-SC, RQM-2S40-3-TP, R-2SP30-TP
  • Hatch HL240RS/12/W
  • Howard M2/40RS-120
  • PLP/Sli/Valmont: 6G1020, 6G1022, 89G480, 89G999, 8G1018, 8G1021W, 8G1022W, 8G1023W, 8G1024W, 8G1025, 8G1028W, 8G1122W, RF-240, RFC-240, RFH-240, RFH-240ES, RHC-240, M28-120, M-28-120,
  • Sola E-420-F-234-IC, ERSF-240-TP
  • Universal \ MagneTek 446-L-SLH-TC-P, 438-L-TC-P, 420-L-TC-P, W589DTCP, 755-L-SLH-TC-P magnetic ballasts
  • Pacific EN-234-TP
  • Lumi-Kon R-240-120-CP
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Additional Information

Our Part No:
Mfr Part #:
Input Voltage:
(2) F40T12ES, (2) F40T12, (2) F34T12, (2) F32T12, (2) F40T10. Also equivalent U-bend.
9.50" (L) x 1.70" (W) x 1.18" (H)
Product Data Sheet:
Meets Energy Star Requirements
Fixture Type:
Case Size:
Alternative Keywords:
B234SR120MA, B234SR120M-A0001, B234SR120M-A000I, B234SR120M-A010C
Number Of Lamps:
F32T12, F34T12, F40T12, F40T12ES
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25 Reviews

  • 5
    Universal Ballast

    Posted by Julian Wilson on Jun 8th 2020

    I received the items quickly. They looked pretty much the same as the old one but much lighter. They fit in the space perfectly. After all connections were made, they worked quickly and wonderfully. I would fully recommend them.

  • 5
    Electronic Ballast for Fluorescent Fixture

    Posted by Paul Michaels on Jun 5th 2020

    When I went to the website to find replacement ballasts for my fluorescent fixture, ballastshop.com informed me that the magnetic ballast I was looking for was no longer available. I was directed to this electronic ballast. I bought two ballasts for my four-lamp fixture. They arrived quickly (four days) and they were easy to install and they were exactly what I needed. I am quite pleased with ballastshop.com and will use them again.

  • 5

    Posted by wayne compton on Jun 5th 2020

    fast, good price, exact item.... what else could you say.

  • 5
    Universal Ballast

    Posted by Mark Finger on May 11th 2020

    The folks at Ballastshop were easy to work with and very helpful on the chat to find the right product. All went well with the installation as I am not a professional electrician, just a competent home handyman. Buzz is gone in the old lights and all is quiet again. I would highly recommend Ballastshop.

  • 5
    Basic 12 ballasts

    Posted by Joseph Crawford on May 10th 2020

    From start to finish Universal Lighting has shown themselves to be at the top of their field! Very easy and straightforward ordering, impressively fast shipping and 100% accuracy of goods purchased. Outstanding prices as well. If you have need of anything lighting they are THE best by far. Great thanks to them all!

  • 5
    Universal ballast B234SR120M-A

    Posted by John on May 4th 2020

    Arrived quickly. Easy to install. Fixed the problem. Fair price. Very satisfied.

  • 5
    Replacement Ballast

    Posted by DENNIS PARTEKA on Apr 24th 2020

    It couldn't have been any more simpler to replace the ballast, just match up the colored wires. It works great but it does make the other five light fixtures look inferior when starting. I'll definitely purchase more in the future.

  • 5
    Universal Ballast

    Posted by Unknown on Apr 23rd 2020

    Worked at the flick of the day switch 1st time

  • 5
    Works great!

    Posted by Brian Biles on Apr 23rd 2020

    Fast shipping, easy to read installation notes. Replaced 2 worn out bassasts. I am no electrician by any means, however, these worked perfect!! Would definitely buy from this company again. Just wish I had bought 3 instead of 2 as I really need 1 more now, just not willing to pay the flat rate shipping again for only 1.

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