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Sold in Quantities of:
1 unit(s)
ALB Price: $12.95 per item
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Ballast for 1 40W Circline Lamp 4 Pin This is a TCP Model 17040Q ballast that operates 1 40w circline lamp. 120V 60hz 40W Circleline. Ballast has 2 pins on bottom and 2 clips on either side with a 4 wire harness and 4 pin socket for your lamp.

17040Q2 - TCP 40W Circline Bulb Ballast

Ideal for ceiling fixture applications and all of your retrofit needs, this TCP ballast for a T6 40W Circline bulb is a fantastic buy. Enjoy an incredibly long lifespan and outstanding energy efficiency at work or at home.

This compact fluorescent ballast uses snap-in technology for your convenience, and it features two pins on the bottom, two clips on the sides, a four-wire harness, and a four-pin socket.

Ballast Specs and Features

  • 40W
  • 120V
  • Operates one 40W Circline bulb
  • 50000-hour lifespan
  • Snap-in technology
  • Model 17040Q2 is hard to find!

Your #1 Lighting Resource

You simply can’t beat our selection and prices, but that’s not the only reason to choose Atlanta Light Bulbs for all your lighting needs. We’ve been in business since 1981, and we only employ qualified, experienced lighting specialists. If you have any questions at all, we’re more than happy to help.

Get the Best Deal

Why spend more on a TCP ballast for your T6 40W Circline bulb? We offer brand-name lighting products at discount prices so you can stay within your budget. If you have any questions about placing your order, installing this ballast, compatibility, or anything else at all, call 1-888-988-2852 or message us now. Save on quality lighting products at Atlanta Light Bulbs.

This Item Replaces

This product is a direct replacement for the following items:
  • 17040Q TCP EC2T-40LPF
  • TCP 17040Q
  • TCP 17040Q2


Minimum Qty 1
Brand TCP
Technology Ballast
Actual Wattage 40
Equivalent Wattage
Voltage 120
Lumen Output
Lumens Per Watt
Color Temperature (Kelvin)
Color Rendering Index
Light Color
Bulb Shape
Base Type
Burn Position
Beam Degrees
Ansi Code
Ballast Factor
Ballast Start Type
Useful Life Hours
Dimmable No
Outdoor Rated No
DLC Certified No
LDL Certified No
LM79 Certified No
LM80 Certified No
TM21 Certified No
Energy Star Rated No
Manufacturer Code
Manufacturers Notes
Diameter (Inch)
Dimensions (Inch) (Length) • (Width) • (Height)


Lead Time:
IN STOCK – Same Day Shipping (order by 4PM ET M-F)

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