Lighting Ballasts

A lighting ballast helps to safely start and operate lighting equipment such as fluorescent or HID lamps. They provide the lamp with the correct voltage at its initial start up and then adjusts the voltage input to maintain the safe running of the lamp during use. Our range of lighting ballasts includes electronic and electromagnetic products from some of the industry's leading brands, including Osram, Philips Lighting, Tridonic and our own RS PRO.

How do lighting ballasts work?

Without a ballast to limit its current as part of its circuitry, a fluorescent lamp would overheat and burn out within seconds, drastically reducing the bulb's operating life. The ballast counteracts this by briefly supplying an initially-high voltage that establishes an arc between the two lamp electrodes when the bulb is turned on, bringing the light to life. Once the arc is established, the ballast quickly reduces the voltage and regulates the electric current to produce a steady light output without overheating or overpowering the bulb, allowing it to remain lit without issue and therefore extending its performance life. For more information on how it works, you can consult our complete Lighting Ballasts Guide.

Types of Lighting Ballasts

The most common types of ballasts are magnetic and electronic, and they come in several start technologies to suit different purposes.

  • Magnetic Ballasts – Magnetic ballasts are located inside your light sockets between the plug and the light bulb and the power cable. They convert mains electricity into a correct voltage to start, make sure that you always match the wattage of the ballast to the wattage of the lamp.
  • Electronic Ballasts – Electronic ballasts alter the flow of electricity in the light bulb by using a series of induction coils that are separated from one another. They change the frequency of the electrical current without changing the voltage. While magnetic ballasts in fluorescent lamps work at a frequency of 60 Hz, electronic ballasts greatly increase that frequency of 20000 Hz. This high frequency ensures you will not see the lights flickering and will not hear a buzzing sound.

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Description Price Wattage Ballast Type Supported Lamp Shape Supported Lamp Type Voltage Rating Dimmable High Frequency Length Width Height Minimum Operating Temperature Maximum Operating Temperature Dimming Protocol EU Energy Efficiency Rating
RS Stock No. 778-5326
BrandRS PRO
MYR143.64
Each
units
18 → 36 (T8) W, 18 → 36 (TC-F) W, 18 → 40 (TC-L) W, 24 and 39 (T5 HO) W Electronic T5 HO, T8, TC-F, TC-L Compact Fluorescent, Fluorescent 220 → 240 V No Yes 285 mm 30 mm 26mm -25°C +60°C - A2
RS Stock No. 778-5313
BrandRS PRO
MYR141.09
Each
units
14 → 35 (T5) W Electronic T5 Fluorescent 220 → 240 V No Yes 285 mm 30 mm 21mm -25°C +60°C - A2
RS Stock No. 778-5329
BrandRS PRO
MYR161.28
Each
units
18 → 36 (T8) W, 24 → 36 (TC-F) W, 24 → 39 (T5 HO) W, 34 → 40 (TC-L) W Electronic T5 HO, T8, TC-F, TC-L Compact Fluorescent, Fluorescent 220 → 240 V No Yes 360 mm 30 mm 26mm -25°C +60°C - A2
RS Stock No. 778-5323
BrandRS PRO
MYR154.43
Each
units
54 (T5 HO) W, 55 (TC-L) W, 58 (T8) W Electronic T5 HO, T8, TC-L Compact Fluorescent, Fluorescent 220 → 240 V No Yes 285 mm 30 mm 26mm -25°C +60°C - A2
RS Stock No. 796-1909
BrandRS PRO
MYR328.64
Each
units
32 W Electronic - LED 220 → 240 V Yes - 103 mm 67 mm 21mm -25°C +50°C DALI -
RS Stock No. 778-5317
BrandRS PRO
MYR177.26
Each
units
14 → 35 (T5) W Electronic T5 Fluorescent 220 → 240 V No Yes 360 mm 30 mm 26mm -25°C +60°C - A2
RS Stock No. 796-1895
BrandRS PRO
MYR300.31
Each
units
50 W Electronic - LED 220 → 240 V Yes - 124 mm 79 mm 22mm -25°C +50°C - -
RS Stock No. 796-1898
BrandRS PRO
MYR285.87
Each
units
80 W Electronic - LED 220 → 240 V Yes - 280 mm 21 mm 30mm -25°C +50°C - -
RS Stock No. 796-1918
BrandRS PRO
MYR287.17
Each
units
80 W Electronic - LED 220 → 240 V Yes - 360 mm 21 mm 30mm -25°C +50°C DALI -
RS Stock No. 721-0853
BrandRS PRO
MYR64.09
Each
units
1 x 14 → 18 W, 1 x 18 → 24 W, 1 x 22 W, 1 x 24 W Electronic T5, T8, TC-F, TC-L, T-R5 Compact Fluorescent, Fluorescent 220 → 240 V No Yes 80 mm 41 mm 18mm -15°C +55°C - A2
RS Stock No. 775-3997
Mfr. Part No.22185217
BrandTridonic
MYR233.48
Each
units
36 W Electronic T8 Fluorescent 220 → 240 V No Yes 280 mm 30 mm 28mm -25°C +60°C - A2
RS Stock No. 789-7930
Mfr. Part No.PCA 2X36 T8 ECO lp
BrandTridonic
MYR442.21
Each
units
2 x 36 W Electronic T8 Fluorescent 220 → 240 V Yes - 360 mm 30 mm 21mm -25°C +70°C DALI A1
RS Stock No. 899-7854
Mfr. Part No.HF-P 3/414 TL5 III
MYR158.18
Each
units
- Electronic TL5 Fluorescent 220 → 240 V No Yes 280 mm 39 mm 21mm -25°C +60°C - A2
RS Stock No. 778-5281
Mfr. Part No.BE 236-2
BrandELT
MYR121.61
Each
units
18 W, 24 W, 30 W, 36 W, 39 W Electronic T5, T8, TC-L Fluorescent 220 → 240 V No Yes 230 mm 40 mm 28mm -20°C +50°C - A2
RS Stock No. 775-3981
Mfr. Part No.22185214
BrandTridonic
MYR201.26
Each
units
36 W Electronic T8 Fluorescent 220 → 240 V No Yes 230 mm 30 mm 21mm -25°C +65°C - A2
RS Stock No. 667-7252
Mfr. Part No.HSA25223221-N
BrandParmar
MYR253.58
Each
units
250 W Electromagnetic - Ceramic Metal Halide, HPS, Metal Halide 230/240 V No - 167 mm 87 mm 72mm 0°C +75°C - A3
RS Stock No. 775-3988
Mfr. Part No.22185216
BrandTridonic
MYR190.58
Each
units
18 W Electronic T8 Fluorescent 220 → 240 V No Yes 280 mm 30 mm 21mm -25°C +70°C - A2
RS Stock No. 667-7246
Mfr. Part No.HSA07223221
BrandParmar
MYR184.01
Each
units
70 W Electromagnetic - Ceramic Metal Halide, HPS, Metal Halide 230/240 V No - 107 mm 69 mm 59mm 0°C +75°C - A3
RS Stock No. 873-5123
Mfr. Part No.QT-ECO 1x18-24/220-240 L long
BrandOsram
MYR51.89
Each
units
20 W Electronic CFL Compact Fluorescent 220 → 240 V No Yes 150 mm 22 mm 22mm -15°C +50°C - A3
RS Stock No. 873-5038
Mfr. Part No.QTP-OPTIMAL 2x18-40
BrandOsram
MYR101.63
Each
units
40 W Electronic T5 Fluorescent 220 → 240 V No - 360 mm 30 mm 21mm -20°C +50°C - A2