Half Light for 6 Lamp Fixtures

Half-Light Ballast Controller: for Use with 6-Lamp Fixtures

$32.51

SKU: HAF3 Category: Tag:

Product Description

The Three Stage Half-Light® (HAF3) is designed for a 6 lamp fixture where one ballast controls two lamps and the other ballast controls the remaining four lamps. Within this configuration, an initial toggle “on” of the wall switch activates ballast one only to deliver 33% light; toggling the switch “off” then “on” again will activate ballast two only to produce 67% light, and by toggling the switch “off” and “on” again a final time, both ballasts will be activated to deliver full light output. Like the Two Stage Half-Light®, the sequence can be easily restarted by holding the switch in the “off” mode for at least 5 seconds.

  • Up to 50% energy savings
  • Uses existing wall switch
  • Installs easily in wiring compartment of light fixture
  • Bi-level lighting control
  • Passive energy savings
  • 120 Vac / 208-277 Vac
  • Does not change voltage waveform
  • Can be used with motion sensing switches
  • Low cost
  • Potential 2 year ROI
  • Made in USA
  • UL Listed, C-UL, CE approved

Further Reading:

Additional Information

Weight 0.227 lbs
Dimensions 3.75 x 1.66 x 0.24 in

Product Applications

Multiple Ballast Light Fixtures

The Three Stage Half-Light™ (HAF3) is designed for a 6 lamp fixture where one ballast controls two lamps and the other ballast controls the remaining four lamps. Within this configuration, an initial toggle "on" of the wall switch activates ballast one only to deliver 33% light; toggling the switch "off" then "on" again will activate ballast two only to produce 67% light, and by toggling the switch "off" and "on" again a final time, both ballasts will be activated to deliver full light output. Like the Two Stage Half-Light™, the sequence can be easily restarted by holding the switch in the "off" mode for at least 5 seconds.

Switch Sequence

Switch On Activates ballast 1 only (33% light) Switch Off, then On Activates ballast 2 only (67% light) Switch Off, then On Activates both ballasts (full light)

Step Dimming Ballast Control

The Half-Light™ controller can be used in conjunction with step dimming ballasts, as well as conventional magnetic and electronic ballasts. By switching between the step dimming input and the primary input, 50% light can be achieved when switch is on and full light when switch is cycled off then on again.

Switch Sequence

Switch On Activates ballast 1 only (50% light) Switch Off, then On Activates both ballasts (full light)

*For 120 Vac systems, black wire is used and red wire is not used. For 208-277 Vac systems, red wire is used and black wire is not used.

Alternate Fixture Control

The Half-Light® controller can be used to control alternating fixtures by switching between the Half-Light® controlled fixture and the normal line voltage controlled fixture. 50% light level is achieved by the first cycle on, while cycling off then on achieves full light.

Switch Sequence

Switch On Activates ballast 1 only (50% light) Switch Off, then On Activates both ballasts (full light)

*For 120 Vac systems, black wire is used and red wire is not used. For 208-277 Vac systems, red wire is used and black wire is not used.

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