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.

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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. 873-5035
Mfr. Part No.QTP-OPTIMAL 1x18-40
BrandOsram
MYR86.89
Each
units
40 W Electronic T5 Fluorescent 220 → 240 V No - 280 mm 30 mm 21mm -20°C +50°C - A2
RS Stock No. 873-5038
Mfr. Part No.QTP-OPTIMAL 2x18-40
BrandOsram
MYR103.79
Each
units
40 W Electronic T5 Fluorescent 220 → 240 V No - 360 mm 30 mm 21mm -20°C +50°C - A2
RS Stock No. 873-5098
Mfr. Part No.QTP-DL 2X36-40/220-240
BrandOsram
MYR136.48
Each
units
90 W Electronic CFL Compact Fluorescent 220 → 240 V No - 280 mm 40 mm 28mm -20°C +50°C - A2
RS Stock No. 873-5076
Mfr. Part No.QT-FIT5 3X14 4X14 / 220-240v
BrandOsram
MYR94.96
Each
units
14 W Electronic T5 Fluorescent 220 → 240 V No - 280 mm 40 mm 21mm -15°C +50°C - A2
RS Stock No. 873-5079
Mfr. Part No.QT-FIT5 1X14-35 / 220-240v
BrandOsram
MYR52.52
Each
units
35 W Electronic T5 Fluorescent 220 → 240 V No - 280 mm 30 mm 21mm -15°C +50°C - A2
RS Stock No. 873-5114
Mfr. Part No.QTi DALI 1x21/39/220-240 DIM
BrandOsram
MYR266.01
Each
units
60 W Electronic T5, T8 Compact Fluorescent 220 → 240 V Yes - 360 mm 30 mm 21mm -25°C +75°C DALI A1
RS Stock No. 873-5060
Mfr. Part No.QTP5 2X49/220-240
BrandOsram
MYR103.79
Each
units
92 W Electronic T5 Fluorescent 220 → 240 V No - 360 mm 30 mm 21mm -20°C +50°C - A2
RS Stock No. 873-5091
Mfr. Part No.QTP-DL 2x55/220-240 GII
BrandOsram
MYR138.30
Each
units
55 W Electronic CFL Compact Fluorescent 220 → 240 V No - 360 mm 30 mm 21mm -20°C +50°C - A2
RS Stock No. 873-5066
Mfr. Part No.QTP5 2X14-35/220-240
BrandOsram
MYR101.41
Each
units
35 W Electronic T5 Fluorescent 220 → 240 V No - 360 mm 30 mm 21mm -20°C +50°C - A2
RS Stock No. 873-5032
Mfr. Part No.QTP-OPTIMAL 1x54-58
BrandOsram
MYR84.65
Each
units
50 W Electronic T5 Fluorescent 220 → 240 V No - 280 mm 30 mm 21mm -20°C +50°C - A2
RS Stock No. 873-5117
Mfr. Part No.QTi DALI 2x14/24/220-240 DIM
BrandOsram
MYR281.99
Each
units
22.5 W Electronic T5, T8 Compact Fluorescent 220 → 240 V Yes - 423 mm 30 mm 21mm -25°C +75°C 1-10V A1
RS Stock No. 873-5088
Mfr. Part No.QTP-M 2X26-32/220-240 S
BrandOsram
MYR105.06
Each
units
68 W Electronic CFL Fluorescent 220 → 240 V No - 123 mm 79 mm 33mm -20°C +50°C - A2
RS Stock No. 873-5054
Mfr. Part No.PT-FIT 35/220-240 I
BrandOsram
MYR135.80
Each
units
39 W Electronic - HID 220 → 240 V No - 171 mm 83 mm 33mm -15°C +60°C - A2
RS Stock No. 873-5085
Mfr. Part No.QTP-M 1X26-42/220-240 S
BrandOsram
MYR103.09
Each
units
46 W Electronic CFL Fluorescent 220 → 240 V No - 103 mm 67 mm 31mm -20°C +50°C - A2
RS Stock No. 873-5072
Mfr. Part No.QT-FIT5 2X14-35 / 220-240v
BrandOsram
MYR87.80
Each
units
35 W Electronic T5 Fluorescent 220 → 240 V No - 280 mm 30 mm 21mm -15°C +50°C - A2
RS Stock No. 873-5041
Mfr. Part No.QTP-OPTIMAL 2x54-58
BrandOsram
MYR106.74
Each
units
54 W Electronic T5 Fluorescent 220 → 240 V No - 360 mm 30 mm 21mm -20°C +50°C - A2
RS Stock No. 873-5101
Mfr. Part No.QTP-T/E 1X26-42,2X26/220-240
BrandOsram
MYR99.59
Each
units
42 W Electronic CFL Compact Fluorescent 220 → 240 V No - 103 mm 67 mm 31mm -20°C +50°C - A2
RS Stock No. 873-5108
Mfr. Part No.QTP-T/E 1x18, 2x18
BrandOsram
MYR99.91
Each
units
18 W Electronic CFL Compact Fluorescent 220 → 240 V No - 103 mm 67 mm 31mm -20°C +50°C - A2
RS Stock No. 873-5127
Mfr. Part No.QT-ECO 2x5-11/220-240 S square
BrandOsram
MYR68.85
Each
units
21 W Electronic CFL Compact Fluorescent 220 → 240 V No Yes 80 mm 40 mm 22mm -15°C +50°C - A3
RS Stock No. 191-7738
Mfr. Part No.4008321537041
BrandOsram
MYR236.90
Each
units
- Electronic - Fluorescent 220 → 240 V - - 103 mm 67 mm 31mm - - - A2