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. 873-5038
Mfr. Part No.QTP-OPTIMAL 2x18-40
BrandOsram
MYR71.70
Each
units
40 W 2 Electronic T5 Fluorescent 220 → 240 V No - 360 mm 30 mm 21mm -20°C +50°C -
RS Stock No. 873-5123
Mfr. Part No.QT-ECO 1x18-24/220-240 L long
BrandOsram
MYR43.34
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. 873-5035
Mfr. Part No.QTP-OPTIMAL 1x18-40
BrandOsram
MYR54.45
Each
units
40 W 1 Electronic T5 Fluorescent 220 → 240 V No - 280 mm 30 mm 21mm -20°C +50°C -
RS Stock No. 873-5098
Mfr. Part No.QTP-DL 2X36-40/220-240
BrandOsram
MYR87.96
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. 873-5076
Mfr. Part No.QT-FIT5 3X14 4X14 / 220-240v
BrandOsram
MYR61.09
Each
units
14 W - Electronic T5 Fluorescent 220 → 240 V No - 280 mm 40 mm 21mm -15°C +50°C -
RS Stock No. 873-5079
Mfr. Part No.QT-FIT5 1X14-35 / 220-240v
BrandOsram
MYR47.76
Each
units
35 W 1 Electronic T5 Fluorescent 220 → 240 V No - 280 mm 30 mm 21mm -15°C +50°C -
RS Stock No. 873-5060
Mfr. Part No.QTP5 2X49/220-240
BrandOsram
MYR66.83
Each
units
92 W 1 Electronic T5 Fluorescent 220 → 240 V No - 360 mm 30 mm 21mm -20°C +50°C -
RS Stock No. 873-5091
Mfr. Part No.QTP-DL 2x55/220-240 GII
BrandOsram
MYR89.85
Each
units
55 W 2 Electronic CFL Compact Fluorescent 220 → 240 V No - 423 mm 30 mm 21mm -20°C +50°C -
RS Stock No. 873-5066
Mfr. Part No.QTP5 2X14-35/220-240
BrandOsram
MYR65.36
Each
units
35 W 2 Electronic T5 Fluorescent 220 → 240 V No - 360 mm 30 mm 21mm -20°C +50°C -
RS Stock No. 873-5114
Mfr. Part No.QTi DALI 1x21/39/220-240 DIM
BrandOsram
MYR171.63
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. 873-5101
Mfr. Part No.QTP-T/E 1X26-42,2X26/220-240
BrandOsram
MYR64.13
Each
units
42 W 2 Electronic CFL Compact Fluorescent 220 → 240 V No - 103 mm 67 mm 31mm -20°C +50°C -
RS Stock No. 873-5032
Mfr. Part No.QTP-OPTIMAL 1x54-58
BrandOsram
MYR58.35
Each
units
50 W 1 Electronic T5 Fluorescent 220 → 240 V No - 280 mm 30 mm 21mm -20°C +50°C -
RS Stock No. 873-5108
Mfr. Part No.QTP-T/E 1x18, 2x18
BrandOsram
MYR57.66
Each
units
18 W 1, 2 Electronic CFL Compact Fluorescent 220 → 240 V No - 103 mm 67 mm 31mm -20°C +50°C -
RS Stock No. 873-5127
Mfr. Part No.QT-ECO 2x5-11/220-240 S square
BrandOsram
MYR62.53
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. 873-5041
Mfr. Part No.QTP-OPTIMAL 2x54-58
BrandOsram
MYR66.90
Each
units
54 W 2 Electronic T5 Fluorescent 220 → 240 V No - 360 mm 30 mm 21mm -20°C +50°C -
RS Stock No. 873-5117
Mfr. Part No.QTi DALI 2x14/24/220-240 DIM
BrandOsram
MYR148.29
Each
units
22.5 W 2 Electronic T5, T8 Compact Fluorescent 220 → 240 V Yes - 423 mm 30 mm 21mm -25°C +75°C 1-10V
RS Stock No. 873-5088
Mfr. Part No.QTP-M 2X26-32/220-240 S
BrandOsram
MYR67.48
Each
units
68 W 2 Electronic CFL Fluorescent 220 → 240 V No - 123 mm 79 mm 33mm -20°C +50°C -
RS Stock No. 873-5085
Mfr. Part No.QTP-M 1X26-42/220-240 S
BrandOsram
MYR64.13
Each
units
46 W 1 Electronic CFL Fluorescent 220 → 240 V No - 103 mm 67 mm 31mm -20°C +50°C -
RS Stock No. 873-5072
Mfr. Part No.QT-FIT5 2X14-35 / 220-240v
BrandOsram
MYR56.81
Each
units
35 W 2 Electronic T5 Fluorescent 220 → 240 V No - 280 mm 30 mm 21mm -15°C +50°C -
RS Stock No. 873-5120
Mfr. Part No.QT-ECO 1x4-16/220-240 L long
BrandOsram
MYR43.34
Each
units
13 W 1 Electronic DD Compact Fluorescent 220 → 240 V No Yes 150 mm 22 mm 22mm -15°C +50°C -