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 781-2951
製造零件編號22185154
BrandTridonic
HK$241.16
單位
49 W 2 Electronic T5 Fluorescent 220 → 240 V No Yes 360 mm 30 mm 21mm -25°C +55°C -
RS庫存編號 873-5117
製造零件編號QTi DALI 2x14/24/220-240 DIM
BrandOsram
HK$272.16
單位
22.5 W 2 Electronic T5, T8 Compact Fluorescent 220 → 240 V Yes - 423 mm 30 mm 21mm -25°C +75°C 1-10V
RS庫存編號 781-2942
製造零件編號22185152
BrandTridonic
HK$241.16
單位
39 W 2 Electronic T5 Fluorescent 220 → 240 V No Yes 360 mm 30 mm 21mm -25°C +60°C -
RS庫存編號 796-1895
BrandRS PRO
HK$547.86
單位
50 W 1 Electronic - LED 220 → 240 V Yes - 124 mm 79 mm 22mm -25°C +50°C -
RS庫存編號 191-7738
製造零件編號4008321537041
BrandOsram
HK$331.76
單位
- - - - - - - - - - - - - -
RS庫存編號 729-9162
製造零件編號HF-P 258 (HK)
HK$1,867.49
單位
- 2 Electronic - Fluorescent 220 → 240 V - - 280 mm 30. mm 28mm - +75°C -
RS庫存編號 873-5088
製造零件編號QTP-M 2X26-32/220-240 S
BrandOsram
HK$138.54
單位
68 W 2 Electronic CFL Fluorescent 220 → 240 V No - 123 mm 79 mm 33mm -20°C +50°C -
RS庫存編號 778-5323
BrandRS PRO
HK$291.38
單位
54 (T5 HO) W, 55 (TC-L) W, 58 (T8) W 1 Electronic T5 HO, T8, TC-L Compact Fluorescent, Fluorescent 220 → 240 V No Yes 285 mm 30 mm 26mm -25°C +60°C -
RS庫存編號 729-9099
製造零件編號PTI150 (HK)
BrandOsram
HK$7,823.58
單位
147 W - - - - 220 → 240 V - - 151 mm 40 mm 91mm -25°C +55 °C, +85 °C, +110 °C -
RS庫存編號 729-9080
製造零件編號PTZ70 (HK)
BrandOsram
HK$4,694.15
單位
- - - - - - - - - - - - - -
RS庫存編號 778-5326
BrandRS PRO
HK$271.01
單位
18 → 36 (T8) W, 18 → 36 (TC-F) W, 18 → 40 (TC-L) W, 24 and 39 (T5 HO) W 1 Electronic T5 HO, T8, TC-F, TC-L Compact Fluorescent, Fluorescent 220 → 240 V No Yes 285 mm 30 mm 26mm -25°C +60°C -
RS庫存編號 873-5085
製造零件編號QTP-M 1X26-42/220-240 S
BrandOsram
HK$156.32
單位
46 W 1 Electronic CFL Fluorescent 220 → 240 V No - 103 mm 67 mm 31mm -20°C +50°C -
RS庫存編號 873-5054
製造零件編號PT-FIT 35/220-240 I
BrandOsram
HK$253.17
單位
39 W 1 Electronic - HID 220 → 240 V No - 171 mm 83 mm 33mm -15°C +60°C -
RS庫存編號 781-2939
製造零件編號22185153
BrandTridonic
HK$312.99
單位
49 W 1 Electronic T5 Fluorescent 220 → 240 V No Yes 280 mm 30 mm 21mm -25°C +60°C -
RS庫存編號 778-5313
BrandRS PRO
HK$276.62
單位
14 → 35 (T5) W 1 Electronic T5 Fluorescent 220 → 240 V No Yes 285 mm 30 mm 26mm -25°C +60°C -
RS庫存編號 678-4600
製造零件編號CP010200
BrandMegaman
HK$549.92
單位
200 W 1 Electromagnetic - Compact Fluorescent 220 → 240 V No - 175 mm 103 mm 59mm -40°C +60°C -