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. 669-2961
Mfr. Part No.638560
BrandOsram
kr 167,18
Each
Units
18 W, 24 W, 15 (HF) W, 20 (HF) W 1 Electronic CFL Compact Fluorescent 220 → 240 V No Yes 80 mm 40 mm 22mm -15°C +50°C -
RS Stock No. 781-2960
Mfr. Part No.22185212
BrandTridonic
kr 419,72
Each
Units
24 W 3, 4 Electronic T5 Fluorescent 220 → 240 V No Yes 360 mm 30 mm 21mm -25°C +60°C -
RS Stock No. 781-2945
Mfr. Part No.22185148
BrandTridonic
kr 348,55
Each
Units
14 W, 21 W, 28 W, 35 W 2 Electronic T5 Fluorescent 220 → 240 V No Yes 360 mm 30 mm 21mm -25°C +75°C -
RS Stock No. 789-7933
Mfr. Part No.PCA 2X58 T8 ECO lp
BrandTridonic
kr 500,77
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. 359-6138
Mfr. Part No.D36-22.3-3
BrandMagnatec
kr 80,56
Each
Units
- - - - - - - - - - - - - -
RS Stock No. 873-5085
Mfr. Part No.QTP-M 1X26-42/220-240 S
BrandOsram
kr 176,26
Each
Units
46 W 1 Electronic CFL Fluorescent 220 → 240 V No - 103 mm 67 mm 31mm -20°C +50°C -
RS Stock No. 775-3994
Mfr. Part No.22185219
BrandTridonic
kr 436,23
Each
Units
18 W 3 Electronic T8 Fluorescent 220 → 240 V No Yes 280 mm 30 mm 21mm -25°C +70°C -
RS Stock No. 873-5127
Mfr. Part No.QT-ECO 2x5-11/220-240 S square
BrandOsram
kr 135,28
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. 667-7252
Mfr. Part No.HSA25223221-N
BrandParmar
kr 500,19
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. 312-3027
Mfr. Part No.BSX3555L82
kr 529,36
Each
Units
35 W, 55 W 1 Electromagnetic - SOX 240 V No - 196 mm 39 mm 28mm 0°C +75°C -
RS Stock No. 778-5284
Mfr. Part No.BE 258-2
BrandELT
kr 219,84
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. 721-0847
Mfr. Part No.BE 436-2
BrandELT
kr 602,49
Each
Units
18 W, 24 W, 30 W, 36 W, 39 W 3, 4 Electronic T5, T8, TC-L Compact Fluorescent, Fluorescent 220 → 240 V No Yes 360 mm - 28mm -20°C +50°C -
RS Stock No. 714-1420
Mfr. Part No.BE 218-4-UN
BrandELT
kr 370,58
Each
Units
14 W, 18 W 2 Electronic T8 Fluorescent 110 → 260 V No Yes 220 mm 40 mm 28mm -20°C +55°C -
RS Stock No. 775-3997
Mfr. Part No.22185217
BrandTridonic
kr 408,76
Each
Units
36 W 2 Electronic T8 Fluorescent 220 → 240 V No Yes 280 mm 30 mm 28mm -25°C +60°C -
RS Stock No. 873-5101
Mfr. Part No.QTP-T/E 1X26-42,2X26/220-240
BrandOsram
kr 176,26
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. 413-055
Mfr. Part No.HF-P 2 14-35 TL5 HE EII
kr 231,72
Each
Units
14 W, 21 W, 28 W, 35 W 2 Electronic TL5 Fluorescent 220 → 240 V No Yes 360 mm 30 mm 22mm -25°C +60°C -
RS Stock No. 873-5048
Mfr. Part No.PTi 70/220-240 I
BrandOsram
kr 315,22
Each
Units
73 W 1 Electronic - HID 220 → 240 V No - 110 mm 75 mm 30mm -25°C +55°C -
RS Stock No. 775-4000
Mfr. Part No.22176407
BrandTridonic
kr 478,35
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. 873-5088
Mfr. Part No.QTP-M 2X26-32/220-240 S
BrandOsram
kr 185,98
Each
Units
68 W 2 Electronic CFL Fluorescent 220 → 240 V No - 123 mm 79 mm 33mm -20°C +50°C -
RS Stock No. 873-5060
Mfr. Part No.QTP5 2X49/220-240
BrandOsram
kr 183,90
Each
Units
92 W 1 Electronic T5 Fluorescent 220 → 240 V No - 360 mm 30 mm 21mm -20°C +50°C -
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