Lighting Ballasts

A lighting ballast helps to safely start and operate lamps such as HID and fluorescent lamps. They provide it with the correct voltage for start-up and the running of the lamp.

How do they work?

Without a ballast to limit it is current, within seconds a fluorescent lamp would overheat and burn out. The ballast briefly supplies high voltage to establish an arc between the two lamp electrodes. Once the arc is established, the ballast quickly reduces the voltage and regulates the electric current to produce a steady light output. For more information on how it works, you can consult our complete Lighting Ballasts Guide.

Types of Ballasts

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

  • Magnetic Ballasts – These 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 – These 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 Number of Lamps Ballast Type Supported Lamp Shape Supported Lamp Type Voltage Rating Dimmable High Frequency Length Width Height Minimum Operating Temperature Maximum Operating Temperature Dimming Protocol
RS Stock No. 778-5317
BrandRS PRO
$72.26
Each
units
14 → 35 (T5) W 2 Electronic T5 Fluorescent 220 → 240 V No Yes 360 mm 30 mm 26mm -25°C +60°C -
RS Stock No. 778-5323
BrandRS PRO
$59.30
Each
units
54 (T5 HO) W, 55 (TC-L) W, 58 (T8) W 1 Electronic T5 HO, T8, TC-L Compact Fluorescent, Fluorescent 220 → 240 V No Yes 285 mm 30 mm 26mm -25°C +60°C -
RS Stock No. 778-5313
BrandRS PRO
$66.92
Each
units
14 → 35 (T5) W 1 Electronic T5 Fluorescent 220 → 240 V No Yes 285 mm 30 mm 21mm -25°C +60°C -
RS Stock No. 778-5281
Mfr. Part No.BE 236-2
BrandELT
$55.42
Each
units
18 W, 24 W, 30 W, 36 W, 39 W 1, 2 Electronic T5, T8, TC-L Fluorescent 220 → 240 V No Yes 230 mm 40 mm 28mm -20°C +50°C -
RS Stock No. 784-0515
Mfr. Part No.7840515-N
BrandParmar
$119.71
Each
units
400 W, 450 W - Electromagnetic - SON 220 → 240 V No - 150 mm 96 mm 81mm - - -
RS Stock No. 789-7930
Mfr. Part No.PCA 2X36 T8 ECO lp
BrandTridonic
$139.98
Each
units
2 x 36 W 2 Electronic T8 Fluorescent 220 → 240 V Yes - 360 mm 30 mm 21mm -25°C +70°C DALI
RS Stock No. 775-4000
Mfr. Part No.22176407
BrandTridonic
$80.23
Each
units
18 W 1, 2 Electronic T4 Fluorescent 220 → 240 V No Yes 103 mm 67 mm 31mm -25°C +70°C -
RS Stock No. 667-7246
Mfr. Part No.HSA07223221
BrandParmar
$56.71
Each
units
70 W 1 Electromagnetic - Ceramic Metal Halide, HPS, Metal Halide 230/240 V No - 107 mm 69 mm 59mm 0°C +75°C -
RS Stock No. 789-7933
Mfr. Part No.PCA 2X58 T8 ECO lp
BrandTridonic
$139.98
Each
units
2 x 58 W 2 Electronic T8 Fluorescent 220 → 240 V Yes - 425 mm 30 mm 21mm -25°C +55°C DALI
RS Stock No. 667-7252
Mfr. Part No.HSA25223221-N
BrandParmar
$79.09
Each
units
250 W 1 Electromagnetic - Ceramic Metal Halide, HPS, Metal Halide 230/240 V No - 167 mm 87 mm 72mm 0°C +75°C -
RS Stock No. 775-4007
Mfr. Part No.22176405
BrandTridonic
$75.09
Each
units
10 W 1, 2 Electronic T4 Fluorescent 220 → 240 V No Yes 103 mm 67 mm 31mm -25°C +70°C -
RS Stock No. 544-361
Mfr. Part No.HIDPVC150S
$182.41
Each
units
150 W 1 Electronic - Ceramic Metal Halide 220 → 240 V No Yes 135 mm 75 mm 32mm -20°C +60°C -
RS Stock No. 678-4600
Mfr. Part No.CP010200
BrandMegaman
$102.94
Each
units
200 W 1 Electromagnetic - Compact Fluorescent 220 → 240 V No - 175 mm 103 mm 59mm -40°C +60°C -
RS Stock No. 544-339
Mfr. Part No.PVC035SCDM
$138.53
Each
units
35 W 1 Electronic - Ceramic Metal Halide 220 → 240 V No Yes 109 mm 75 mm 32mm -20°C +45°C -
RS Stock No. 899-7854
Mfr. Part No.HF-P 3/414 TL5 III
$49.33
Each
units
- 3/4 Piece Electronic TL5 Fluorescent 220 → 240 V No Yes 280 mm 39 mm 21mm -25°C +60°C -
RS Stock No. 544-351
Mfr. Part No.PVC035ICDM
$48.52
Each
units
35 W 1 Electronic - Ceramic Metal Halide 220 → 240 V No Yes 188 mm 82.7 mm 35mm -20°C +45°C -
RS Stock No. 544-349
Mfr. Part No.HID-PV C 070I
$51.67
Each
units
70 W 1 Electronic - Ceramic Metal Halide 220 → 240 V No Yes 188 mm 82.7 mm 35mm -20°C +45°C -
RS Stock No. 544-355
Mfr. Part No.PVC070SCDM
$87.74
Each
units
70 W 1 Electronic - Ceramic Metal Halide 220 → 240 V No Yes 109 mm 75 mm 32mm -20°C +45°C -
New
RS Stock No. 203-5803
Mfr. Part No.UVI/K0027A
$224.31
Each
units
22.5 W 1 Electronic Cable - 26.4 V - - - - - - - -
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