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. 873-5066
Mfr. Part No.QTP5 2X14-35/220-240
BrandOsram
SGD20.81
Each
units
35 W 2 Electronic T5 Fluorescent 220 → 240 V No - 360 mm 30 mm 21mm -20°C +50°C -
RS Stock No. 775-4007
Mfr. Part No.22176405
BrandTridonic
SGD49.38
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. 873-5120
Mfr. Part No.QT-ECO 1x4-16/220-240 L long
BrandOsram
SGD13.80
Each
units
13 W 1 Electronic DD Compact Fluorescent 220 → 240 V No Yes 150 mm 22 mm 22mm -15°C +50°C -
RS Stock No. 873-5035
Mfr. Part No.QTP-OPTIMAL 1x18-40
BrandOsram
SGD17.34
Each
units
40 W 1 Electronic T5 Fluorescent 220 → 240 V No - 280 mm 30 mm 21mm -20°C +50°C -
RS Stock No. 873-5085
Mfr. Part No.QTP-M 1X26-42/220-240 S
BrandOsram
SGD20.42
Each
units
46 W 1 Electronic CFL Fluorescent 220 → 240 V No - 103 mm 67 mm 31mm -20°C +50°C -
RS Stock No. 873-5038
Mfr. Part No.QTP-OPTIMAL 2x18-40
BrandOsram
SGD22.83
Each
units
40 W 2 Electronic T5 Fluorescent 220 → 240 V No - 360 mm 30 mm 21mm -20°C +50°C -
RS Stock No. 873-5127
Mfr. Part No.QT-ECO 2x5-11/220-240 S square
BrandOsram
SGD19.91
Each
units
21 W 2 Electronic CFL Compact Fluorescent 220 → 240 V No Yes 80 mm 40 mm 22mm -15°C +50°C -
RS Stock No. 781-2923
Mfr. Part No.22185147
BrandTridonic
SGD30.89
Each
units
14 W, 21 W, 28 W, 35 W 1 Electronic T5 Fluorescent 220 → 240 V No Yes 280 mm 30 mm 21mm -25°C +80°C -
RS Stock No. 544-339
Mfr. Part No.PVC035SCDM
SGD106.75
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. 873-5098
Mfr. Part No.QTP-DL 2X36-40/220-240
BrandOsram
SGD28.01
Each
units
90 W 1 Electronic CFL Compact Fluorescent 220 → 240 V No - 280 mm 40 mm 28mm -20°C +50°C -
RS Stock No. 793-4691
Mfr. Part No.AC1 6/24-SC
BrandELT
SGD21.21
Each
units
58 W, 65 W 1 Electromagnetic T8 Fluorescent 240 V No - 190 mm 41 mm 28.5mm - +130°C -
RS Stock No. 873-5060
Mfr. Part No.QTP5 2X49/220-240
BrandOsram
SGD21.28
Each
units
92 W 1 Electronic T5 Fluorescent 220 → 240 V No - 360 mm 30 mm 21mm -20°C +50°C -
RS Stock No. 778-5284
Mfr. Part No.BE 258-2
BrandELT
SGD28.95
Each
units
54 W, 55 W, 58 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. 778-5281
Mfr. Part No.BE 236-2
BrandELT
SGD31.46
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. 781-2951
Mfr. Part No.22185154
BrandTridonic
SGD32.92
Each
units
49 W 2 Electronic T5 Fluorescent 220 → 240 V No Yes 360 mm 30 mm 21mm -25°C +55°C -
RS Stock No. 789-7933
Mfr. Part No.PCA 2X58 T8 ECO lp
BrandTridonic
SGD71.77
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. 873-5088
Mfr. Part No.QTP-M 2X26-32/220-240 S
BrandOsram
SGD21.49
Each
units
68 W 2 Electronic CFL Fluorescent 220 → 240 V No - 123 mm 79 mm 33mm -20°C +50°C -
RS Stock No. 873-5114
Mfr. Part No.QTi DALI 1x21/39/220-240 DIM
BrandOsram
SGD54.65
Each
units
60 W 1 Electronic T5, T8 Compact Fluorescent 220 → 240 V Yes - 360 mm 30 mm 21mm -25°C +75°C DALI
RS Stock No. 873-5123
Mfr. Part No.QT-ECO 1x18-24/220-240 L long
BrandOsram
SGD13.80
Each
units
20 W 1 Electronic CFL Compact Fluorescent 220 → 240 V No Yes 150 mm 22 mm 22mm -15°C +50°C -
RS Stock No. 775-3990
Mfr. Part No.22185218
BrandTridonic
SGD47.40
Each
units
58 W 2 Electronic T8 Fluorescent 220 → 240 V No Yes 280 mm 30 mm 28mm -25°C +55°C -
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