CH40-120B FC40T5 FC12T5 Circular Fluorescent Lamp Ballast
CH40-120B FC40T5 FC12T5 Circular Fluorescent Lamp Ballast

*Ballast for 40W Circular $12.95 Each

*1,550 Remaining In Stock

Lamps ordered will generally be shipped the next business day by USPS Priority Mail or UPS, check here for Shipping Information. Large orders may qualify for a discount and may not qualify for next day shipment. If you do not know what lamp you require or for lamps not listed, email your request or call 336-882-2854. To order, please use our secure shopping cart or call 336-882-2852 or 800-692-3051. Click to go to our Home Page and View Cart.

Model: CH40-120B
Electronic Ballast
Lamp Type: FC40 T5 T9, FC40T5, FC40T9 Circular
Rapid Start
Class P, Type 1 Outdoor
Sound Rating: A
120V 50/60Hz .66A or .60A
Dimensions: 2.656"/67.47mm long, 1.743"/44.29mm wide and 1.061"/26.95mm tall. The length including the base plate is 3.356"/85.26mm long.

Use Only Within an Electrical Enclosure
Ballast Must Be Grounded
UL Listed E240748

You can find the FC12T5/841 lamp to match this ballast here.

This is not a dimmable ballast. Do not use with a dimmer.
Do not use in 230V applications.
This ballast is specifically made for the 40W Circular style bulbs. This ballast is not designed for any other bulb type.
We have had customers mistakenly purchase this ballast for 27W fluorescent lamps with lower amperage requirements and it does not work in that application.

If you have any questions about using or installing this ballast please call technical support at 336-882-2854.

This ballast is designed to drive the FC40W circular bulbs including the FCL40T5, FC40T5, FC12T5/841 and all other color temperature and part number variations of this bulb. This ballast may not fit in all fixtures. Each equipment manufacturer has their own ballast with a variety of shapes, sizes and wiring methods. In some cases it may require a little engineering to use this ballast in your fixture.

Basic Wiring Information

The white wire is the neutral wire and goes to the white wire coming from the wall.

The black wire is the hot wire and will go through your switch. This means that the black wire from the wall will go to one side of your switch and a wire from the other side of the switch goes to the black wire on the ballast. The switch interrupts the power supplied to the ballast.

Our ballast has two red and two yellow wires coming out of the ballast. These four wires go to the socket directly. The bulb has two filaments and the two red wires go to one filament and the two yellow wires go to the other filament. Lay your FC40W bulb on a table in front of you with the pins facing toward you. The circular lamp should be flat on the surface. There is a filament on the right and a filament on the left. You can wire to the relative positions in the socket a red wire to the upper left, a red wire to the lower left, a yellow wire to the upper right and the other yellow wire to the lower right. The red wires go to the filament on the left and the yellow go to the filament on the right. It does not matter which side is red and which side is yellow but you cannot cross the wires. A red and a yellow will not light up a filament.

You can order the following replacement socket here.

Alternate Part Numbers: CH40120B-120V, AccuPro, Accu Pro, AP-CH40-120B, FC12 T5

Cross reference information is designed to help you find the correct part for your application. We do not verify the accuracy of this information. You are responsible for ordering the correct part and we make every attempt to help you in that process. We recommend that you confirm the information with the equipment manufacturer before ordering.
800 Burton Avenue, Suite 107
High Point, NC 27262
336-882-BULB (2852)

Order Line: 800-692-3051
Technical Support Line: 336-882-2854
Fax Line: 336-882-2819

Hours: 8 AM to 4 PM EST Monday through Friday

Sales: Address changes, invoice copies, tracking and delivery confirmation numbers, order status, product availability, payment options, shipping quotes, returns, damage claims

Technical Support: Help finding a product not listed, determining the correct lamp for your application, lamp handling and premature lamp failures

International Orders: Large international orders that require special shipping arrangements and quotes

If you have compliments, complaints, suggestions, or help with areas not listed above please contact:

Ron Miller
General Manager