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 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 544-339
製造零件編號PVC035SCDM
HK$652.39
單位
35 W 1 Electronic - Ceramic Metal Halide 220 → 240 V No Yes 109 mm 75 mm 32mm -20°C +45°C -
RS庫存編號 899-7854
製造零件編號HF-P 3/414 TL5 III
HK$200.52
單位
- 3/4 Piece Electronic TL5 Fluorescent 220 → 240 V No Yes 280 mm 39 mm 21mm -25°C +60°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 544-351
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 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 -
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 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 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 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 544-355
製造零件編號PVC070SCDM
HK$588.90
單位
70 W 1 Electronic - Ceramic Metal Halide 220 → 240 V No Yes 109 mm 75 mm 32mm -20°C +45°C -