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 adjust the voltage input to maintain the safe running of the lamp during use. Our range of lighting ballasts includes both 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 lights ballast counteracts this by briefly supplying an initial high voltage that establishes an arc between the lamps two electrodes when the bulb is turned on, bringing the light to life. Once this arc is established, the ballast can then quickly reduce the voltage and is then able to regulate the electrical current to produce a steady and safe light output without overheating or overpowering the bulb. This function allows the bulb 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.

...
Read more Read less

Filters

Viewing 1 - 20 of 91 products
Results per page
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. 775-3994
Mfr. Part No.22185219
BrandTridonic
HK$407.78
Each
units
18 W - Electronic T8 Fluorescent 220 → 240 V No Yes 280 mm 30 mm 21mm -25°C +70°C -
RS Stock No. 778-5281
Mfr. Part No.BE 236-2
BrandELT
HK$214.55
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 -
RS Stock No. 781-2967
Mfr. Part No.22185211
BrandTridonic
HK$241.16
Each
units
14 W - Electronic T5 Fluorescent 220 → 240 V No Yes 360 mm 30 mm 21mm -25°C +60°C -
RS Stock No. 696-8769
BrandConvac
HK$1,557.79
Each
units
- - - - - - - - - - - - - -
RS Stock No. 873-5072
Mfr. Part No.QT-FIT5 2X14-35 / 220-240v
BrandOsram
HK$151.68
Each
units
35 W - Electronic T5 Fluorescent 220 → 240 V No - 280 mm 30 mm 21mm -15°C +50°C -
RS Stock No. 781-2945
Mfr. Part No.22185148
BrandTridonic
HK$334.73
Each
units
14 W, 21 W, 28 W, 35 W - Electronic T5 Fluorescent 220 → 240 V No Yes 360 mm 30 mm 21mm -25°C +75°C -
RS Stock No. 775-3997
Mfr. Part No.22185217
BrandTridonic
HK$372.92
Each
units
36 W - Electronic T8 Fluorescent 220 → 240 V No Yes 280 mm 30 mm 28mm -25°C +60°C -
RS Stock No. 873-5041
Mfr. Part No.QTP-OPTIMAL 2x54-58
BrandOsram
HK$179.96
Each
units
54 W - Electronic T5 Fluorescent 220 → 240 V No - 360 mm 30 mm 21mm -20°C +50°C -
RS Stock No. 667-7252
Mfr. Part No.HSA25223221-N
BrandParmar
HK$445.29
Each
units
250 W - Electromagnetic - Ceramic Metal Halide, HPS, Metal Halide 230/240 V No - 167 mm 87 mm 72mm 0°C +75°C -
RS Stock No. 775-3981
Mfr. Part No.22185214
BrandTridonic
HK$355.88
Each
units
36 W - Electronic T8 Fluorescent 220 → 240 V No Yes 230 mm 30 mm 21mm -25°C +65°C -
RS Stock No. 775-3972
Mfr. Part No.22185213
BrandTridonic
HK$355.10
Each
units
18 W - Electronic T8 Fluorescent 220 → 240 V No Yes 230 mm 30 mm 21mm -25°C +70°C -
RS Stock No. 873-5066
Mfr. Part No.QTP5 2X14-35/220-240
BrandOsram
HK$176.41
Each
units
35 W - Electronic T5 Fluorescent 220 → 240 V No - 360 mm 30 mm 21mm -20°C +50°C -
RS Stock No. 899-7854
Mfr. Part No.HF-P 3/414 TL5 III
HK$299.93
Each
units
- - Electronic TL5 Fluorescent 220 → 240 V No Yes 280 mm 39 mm 21mm -25°C +60°C -
RS Stock No. 775-3988
Mfr. Part No.22185216
BrandTridonic
HK$382.10
Each
units
18 W - Electronic T8 Fluorescent 220 → 240 V No Yes 280 mm 30 mm 21mm -25°C +70°C -
RS Stock No. 729-9156
Mfr. Part No.BMH70L302ITS (HK)
HK$1,447.37
Each
units
- - Electromagnetic - Metal Halide 230 V - - 117 mm 57.1 mm 51.5mm - - -
RS Stock No. 775-4007
Mfr. Part No.22176405
BrandTridonic
HK$436.41
Each
units
10 W - Electronic T4 Fluorescent 220 → 240 V No Yes 103 mm 67 mm 31mm -25°C +70°C -
RS Stock No. 544-339
Mfr. Part No.PVC035SCDM
HK$579.06
Each
units
35 W - Electronic - Ceramic Metal Halide 220 → 240 V No Yes 109 mm 75 mm 32mm -20°C +45°C -
RS Stock No. 781-2958
Mfr. Part No.22185210
BrandTridonic
HK$489.56
Each
units
80 W - Electronic T5 Fluorescent 220 → 240 V No Yes 425 mm 30 mm 21mm -25°C +55°C -
RS Stock No. 729-9165
Mfr. Part No.EB-P 226 (HK)
HK$1,825.05
Each
units
- - Electromagnetic - Fluorescent 220 → 240 V - - 94 mm 72 mm 31mm - +65°C -
RS Stock No. 729-9169
Mfr. Part No.EB-P 218 (HK)
HK$1,803.84
Each
units
- - Electronic - Fluorescent 220 → 240 V - - 123 mm 79 mm 33mm - +65°C -