Model # 496786

Internet #202960408

Store SKU #277266

Philips Advance AmbiStar 40-Watt 2-Lamp T12 Rapid Start High Frequency Electronic Replacement Ballast
0781087090428

Philips Advance

AmbiStar 40-Watt 2-Lamp T12 Rapid Start High Frequency Electronic Replacement Ballast

  • 2 year limited manufacturer's warranty
  • Thermally protected
  • Lights 2 F8T5 lamp
$18.97 /each

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Product Overview

The Philips Advance AmbiStar Metal Black Ballast is UTL, CSA and ETL listed. It offers metal construction for strength. This lightweight ballast has a traditional style and black finish.

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Customer Questions & Answers

Will this replace R-2S40-1-TP?

Asked by: Bill
can this ballast work with 9 ft lamp
Answered by: alvin
Date published: 2016-05-04

Is this an electronic ballast or a magnetic ballast?

The description says "electronic ballast" but the specifications says "magnetic ballast. Which is it? Thanks
Asked by: mwarney
The Philips website describes this RELB-2S40-N ballast as a T12 electronic ballast.
Answered by: RogerS
Date published: 2016-12-01

There's no specification on the length of the lamps? Can I use the ballast with T12 4ft lamps? Can I connect it in parallel?

Asked by: RPang
Yes. works with standard 34W and 40W 4foot tubes.
Answered by: jnd
Date published: 2016-06-10

I NEED A REPLACEMENT BALLAST FOR ADVANCE TRANSFORMER R-2S40-TP F40T12 / RS 48" 40W 430MA--34W 460MA

I NEED A REPLACEMENT BALLAST FOR ADVANCE TRANSFORMER R-2S40-TP F40T12 / RS 48" 40W 430MA--34W 460MA
Asked by: Djdoms
If you have, and want to retain, T12 48" bulbs then this ballast is not for you. If you have T8 bulbs, or are willing to trade in your T12s for T8 bulbs, then this ballast is a very good choice at a very good price. I swapped out my magnetic T12 ballast, removed all existing wires, and rewired it as shown in the documentation + one jumper and it worked like a charm. Instant on, instant off, no hum. Be sure to recycle your old ballast at your local recycle system; it is likely full of nasty stuff.
Answered by: RogerS
Date published: 2017-02-07
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Customer Reviews

AmbiStar 40-Watt 2-Lamp T12 Rapid Start High Frequency Electronic Replacement Ballast is rated 4.1 out of 5 by 44.
Rated 1 out of 5 by from I replaced this ballast twice in the last 5 years, they only last a few months past the warranty.... I replaced this ballast twice in the last 5 years, they only last a few months past the warranty. The original ballast in that light fixture was more than 30 years old. Instead of being a fool 3 times I bought a whole light fixture at a building supplies recycler for 1/2 the price. The used ballast weighs about 3 times as much as this "new" ballast, which is probably why the old ones last 30 years plus. This light fixture is one of three all on the same switch and are original equipment in a house that was built in 1979. The other 2 ballasts have yet to be replaced (knock on wood).
Date published: 2017-03-08
Rated 3 out of 5 by from Very Slow Start BEWARE: This ballast is classified as "Rapid Start" by Philips, but this means it takes 1-1.5 seconds to produce any light. I called Philips tech support when I experienced this delay (with new Philips Alto bulbs), and they confirmed this is normal--the delay is also stated in the on-line spec sheet (but not on or with the product in the store). My previous ballast (older magnetic type, Universal Therm-O-Matic-X brand, also rated Rapid Start) started nearly instantly. Waiting for light as you come into a dark room is very annoying. HD is selling Philips exclusively, and Philips does not appear to make/sell any "Instant Start" ballasts for the F40T12 bulbs, so there does not appear to be any alternatives with Philips or at HD. The slow start is supposed to increase life, even though my last one, which came on instantly, lasted at least 15 years with constant on-off use. Personally, I would like to have a choice: life vs. speed (with an "Instant" start rating?). Aside from the "Rapid" rating on the item's label, the in-store literature should at least notify the buyer of what to expect--you should not have to call tech support to find out something so basic. On the plus side, if you can tolerate the slow start, it's size and weight are very convenient compared to the older magnetic ballasts, the price is relatively good, and it evens comes with a good 5-year warranty (probably, partially because of the slow start).
Date published: 2016-10-07
Rated 5 out of 5 by from Easy Install Make sure one gets the right replacement part. Follow the wiring in the replacement, not in what is getting replaced. School yourself on what wiring diagrams mean. Putting in was easy, you need a wire stripper and wire connectors. Rest is simple!
Date published: 2016-10-08
Rated 5 out of 5 by from My maintenance supervisor is well pleased with this product. He states it is easy to install and... My maintenance supervisor is well pleased with this product. He states it is easy to install and gives flawless performance.
Date published: 2017-01-10
Rated 5 out of 5 by from This is a High Quality ballast with simple instructions. There is plenty of wire length to make t... This is a High Quality ballast with simple instructions. There is plenty of wire length to make the connections with.
Date published: 2017-03-21
Rated 5 out of 5 by from Exact fit and same colors! Excellent replacement had wires of same colors which made installation quite simple. Service was great and quick.
Date published: 2017-03-07
Rated 5 out of 5 by from Thought we would have to get new fixtures. This ballast fixed the problem light fixture and save... Thought we would have to get new fixtures. This ballast fixed the problem light fixture and saved the whole set.
Date published: 2016-12-09
Rated 5 out of 5 by from Works Well First time replacing a ballast- east to install with wire colors matching existing fixture
Date published: 2016-11-01
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