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庫存編號 873-5127
製造零件編號QT-ECO 2x5-11/220-240 S square
BrandOsram
HK$117.18
單位
21 W 2 Electronic CFL Compact Fluorescent 220 → 240 V No Yes 80 mm 40 mm 22mm -15°C +50°C -
RS庫存編號 789-7930
製造零件編號PCA 2X36 T8 ECO lp
BrandTridonic
HK$475.25
單位
2 x 36 W 2 Electronic T8 Fluorescent 220 → 240 V Yes - 360 mm 30 mm 21mm -25°C +70°C DALI
RS庫存編號 667-7246
製造零件編號HSA07223221
BrandParmar
HK$262.14
單位
70 W 1 Electromagnetic - Ceramic Metal Halide, HPS, Metal Halide 230/240 V No - 107 mm 69 mm 59mm 0°C +75°C -
RS庫存編號 873-5076
製造零件編號QT-FIT5 3X14 4X14 / 220-240v
BrandOsram
HK$112.14
單位
14 W - Electronic T5 Fluorescent 220 → 240 V No - 280 mm 40 mm 21mm -15°C +50°C -
RS庫存編號 544-349
製造零件編號HID-PV C 070I
HK$605.57
單位
70 W 1 Electronic - Ceramic Metal Halide 220 → 240 V No Yes 188 mm 82.7 mm 35mm -20°C +45°C -
RS庫存編號 873-5120
製造零件編號QT-ECO 1x4-16/220-240 L long
BrandOsram
HK$80.05
單位
13 W 1 Electronic DD Compact Fluorescent 220 → 240 V No Yes 150 mm 22 mm 22mm -15°C +50°C -
RS庫存編號 729-9147
製造零件編號BSN150L300I (HK)
HK$1,711.42
單位
- - Electromagnetic - - 220 V - - 125 mm 75.5 mm 64.5mm - - -
RS庫存編號 544-361
製造零件編號HIDPVC150S
HK$816.17
單位
150 W 1 Electronic - Ceramic Metal Halide 220 → 240 V No Yes 135 mm 75 mm 32mm -20°C +60°C -
RS庫存編號 775-3990
製造零件編號22185218
BrandTridonic
HK$345.96
單位
58 W 2 Electronic T8 Fluorescent 220 → 240 V No Yes 280 mm 30 mm 28mm -25°C +55°C -
RS庫存編號 873-5060
製造零件編號QTP5 2X49/220-240
BrandOsram
HK$123.35
單位
92 W 1 Electronic T5 Fluorescent 220 → 240 V No - 360 mm 30 mm 21mm -20°C +50°C -
RS庫存編號 781-2923
製造零件編號22185147
BrandTridonic
HK$216.77
單位
14 W, 21 W, 28 W, 35 W 1 Electronic T5 Fluorescent 220 → 240 V No Yes 280 mm 30 mm 21mm -25°C +80°C -
RS庫存編號 778-5317
BrandRS PRO
HK$245.49
單位
14 → 35 (T5) W 2 Electronic T5 Fluorescent 220 → 240 V No Yes 360 mm 30 mm 26mm -25°C +60°C -
RS庫存編號 781-2958
製造零件編號22185210
BrandTridonic
HK$308.96
單位
80 W 2 Electronic T5 Fluorescent 220 → 240 V No Yes 425 mm 30 mm 21mm -25°C +55°C -
RS庫存編號 544-351
製造零件編號PVC035ICDM
HK$548.11
單位
35 W 1 Electronic - Ceramic Metal Halide 220 → 240 V No Yes 188 mm 82.7 mm 35mm -20°C +45°C -
RS庫存編號 775-3984
製造零件編號22185215
BrandTridonic
HK$251.26
單位
58 W 1 Electronic T8 Fluorescent 220 → 240 V No Yes 230 mm 30 mm 21mm -25°C +55°C -
RS庫存編號 873-5038
製造零件編號QTP-OPTIMAL 2x18-40
BrandOsram
HK$128.78
單位
40 W 2 Electronic T5 Fluorescent 220 → 240 V No - 360 mm 30 mm 21mm -20°C +50°C -
RS庫存編號 729-9169
製造零件編號EB-P 218 (HK)
HK$1,803.84
單位
- - Electronic - Fluorescent 220 → 240 V - - 123 mm 79 mm 33mm - +65°C -
RS庫存編號 873-5079
製造零件編號QT-FIT5 1X14-35 / 220-240v
BrandOsram
HK$88.10
單位
35 W 1 Electronic T5 Fluorescent 220 → 240 V No - 280 mm 30 mm 21mm -15°C +50°C -
RS庫存編號 873-5035
製造零件編號QTP-OPTIMAL 1x18-40
BrandOsram
HK$100.43
單位
40 W 1 Electronic T5 Fluorescent 220 → 240 V No - 280 mm 30 mm 21mm -20°C +50°C -
RS庫存編號 729-9165
製造零件編號EB-P 226 (HK)
HK$1,825.05
單位
- - Electromagnetic - Fluorescent 220 → 240 V - - 94 mm 72 mm 31mm - +65°C -