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 adjusts the voltage input to maintain the safe running of the lamp during use. Our range of lighting ballasts includes 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 ballast counteracts this by briefly supplying an initially-high voltage that establishes an arc between the two lamp electrodes when the bulb is turned on, bringing the light to life. Once the arc is established, the ballast quickly reduces the voltage and regulates the electric current to produce a steady light output without overheating or overpowering the bulb, allowing it 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 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庫存編號 775-3994
製造零件編號22185219
BrandTridonic
HK$279.23
單位
18 W - Electronic T8 Fluorescent 220 → 240 V No Yes 280 mm 30 mm 21mm -25°C +70°C -
RS庫存編號 781-2967
製造零件編號22185211
BrandTridonic
HK$221.87
單位
14 W - Electronic T5 Fluorescent 220 → 240 V No Yes 360 mm 30 mm 21mm -25°C +60°C -
RS庫存編號 778-5281
製造零件編號BE 236-2
BrandELT
HK$198.72
單位
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庫存編號 696-8769
BrandConvac
HK$1,557.79
單位
- - - - - - - - - - - - - -
RS庫存編號 781-2945
製造零件編號22185148
BrandTridonic
HK$317.66
單位
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庫存編號 873-5041
製造零件編號QTP-OPTIMAL 2x54-58
BrandOsram
HK$170.78
單位
54 W - Electronic T5 Fluorescent 220 → 240 V No - 360 mm 30 mm 21mm -20°C +50°C -
RS庫存編號 775-3997
製造零件編號22185217
BrandTridonic
HK$362.53
單位
36 W - Electronic T8 Fluorescent 220 → 240 V No Yes 280 mm 30 mm 28mm -25°C +60°C -
RS庫存編號 873-5072
製造零件編號QT-FIT5 2X14-35 / 220-240v
BrandOsram
HK$117.56
單位
35 W - Electronic T5 Fluorescent 220 → 240 V No - 280 mm 30 mm 21mm -15°C +50°C -
RS庫存編號 775-3981
製造零件編號22185214
BrandTridonic
HK$336.90
單位
36 W - Electronic T8 Fluorescent 220 → 240 V No Yes 230 mm 30 mm 21mm -25°C +65°C -
RS庫存編號 667-7252
製造零件編號HSA25223221-N
BrandParmar
HK$422.48
單位
250 W - Electromagnetic - Ceramic Metal Halide, HPS, Metal Halide 230/240 V No - 167 mm 87 mm 72mm 0°C +75°C -
RS庫存編號 775-3972
製造零件編號22185213
BrandTridonic
HK$328.88
單位
18 W - Electronic T8 Fluorescent 220 → 240 V No Yes 230 mm 30 mm 21mm -25°C +70°C -
RS庫存編號 775-4007
製造零件編號22176405
BrandTridonic
HK$424.25
單位
10 W - Electronic T4 Fluorescent 220 → 240 V No Yes 103 mm 67 mm 31mm -25°C +70°C -
RS庫存編號 729-9156
製造零件編號BMH70L302ITS (HK)
HK$1,447.37
單位
- - Electromagnetic - Metal Halide 230 V - - 117 mm 57.1 mm 51.5mm - - -
RS庫存編號 899-7854
製造零件編號HF-P 3/414 TL5 III
HK$264.78
單位
- - Electronic TL5 Fluorescent 220 → 240 V No Yes 280 mm 39 mm 21mm -25°C +60°C -
RS庫存編號 544-339
製造零件編號PVC035SCDM
HK$549.40
單位
35 W - Electronic - Ceramic Metal Halide 220 → 240 V No Yes 109 mm 75 mm 32mm -20°C +45°C -
RS庫存編號 775-3988
製造零件編號22185216
BrandTridonic
HK$353.90
單位
18 W - Electronic T8 Fluorescent 220 → 240 V No Yes 280 mm 30 mm 21mm -25°C +70°C -
RS庫存編號 873-5066
製造零件編號QTP5 2X14-35/220-240
BrandOsram
HK$134.19
單位
35 W - Electronic T5 Fluorescent 220 → 240 V No - 360 mm 30 mm 21mm -20°C +50°C -
RS庫存編號 544-351
製造零件編號PVC035ICDM
HK$200.35
單位
35 W - Electronic - Ceramic Metal Halide 220 → 240 V No Yes 188 mm 82.7 mm 35mm -20°C +45°C -
RS庫存編號 873-5079
製造零件編號QT-FIT5 1X14-35 / 220-240v
BrandOsram
HK$98.51
單位
35 W - Electronic T5 Fluorescent 220 → 240 V No - 280 mm 30 mm 21mm -15°C +50°C -
RS庫存編號 781-2923
製造零件編號22185147
BrandTridonic
HK$312.99
單位
14 W, 21 W, 28 W, 35 W - Electronic T5 Fluorescent 220 → 240 V No Yes 280 mm 30 mm 21mm -25°C +80°C -