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METAL HALIDE BALLAST KITS

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175W METAL HALIDE BALLAST KIT. 4-TAP. 120 THRU 277V
KEYSTONE

KEYSTONE MH-175A-Q-KIT

MH175-QT-K

$37.39

per ballast

SKU: MH175-QT-K

Mfr Part: KEYSTONE MH-175A-Q-KIT

Color Temp: N/A

KEYSTONE CATALOG
175W METAL HALIDE BALLAST KIT. 4-TAP. 120 THRU 277V
$37.39

$37.39 per ballast

175W METAL HALIDE BALLAST KIT. 5-TAP. 120 THRU 480V
KEYSTONE

KEYSTONE MH-175A-P-KIT

MH175-PT-K

$48.15

per ballast

SKU: MH175-PT-K

Mfr Part: KEYSTONE MH-175A-P-KIT

Color Temp: N/A

KEYSTONE CATALOG
175W METAL HALIDE BALLAST KIT. 5-TAP. 120 THRU 480V
$48.15

$48.15 per ballast

250W METAL HALIDE BALLAST KIT. 4-TAP. 120 THRU 277V..
KEYSTONE

KEYSTONE MH-250A-Q-KIT

MH250-QT-K

$46.99

per ballast

SKU: MH250-QT-K

Mfr Part: KEYSTONE MH-250A-Q-KIT

Color Temp: N/A

KEYSTONE CATALOG
250W METAL HALIDE BALLAST KIT. 4-TAP. 120 THRU 277V..
$46.99

$46.99 per ballast

250W METAL HALIDE BALLAST KIT. 5-TAP. 120 THRU 480V
KEYSTONE

KEYSTONE MH-250A-P-KIT

MH250-PT-K

$49.79

per ballast

SKU: MH250-PT-K

Mfr Part: KEYSTONE MH-250A-P-KIT

Color Temp: N/A

KEYSTONE CATALOG
250W METAL HALIDE BALLAST KIT. 5-TAP. 120 THRU 480V
$49.79

$49.79 per ballast

250W METAL HALIDE BALLAST KIT. 480V ONLY
KEYSTONE

KEYSTONE MH-250A-480-KIT

MH250-480-K

$49.99

per ballast

SKU: MH250-480-K

Mfr Part: KEYSTONE MH-250A-480-KIT

Color Temp: N/A

KEYSTONE CATALOG
250W METAL HALIDE BALLAST KIT. 480V ONLY
$49.99

$49.99 per ballast

400W METAL HALIDE BALLAST KIT. 4-TAP. 120 THRU 277V..
KEYSTONE

KEYSTONE MH-400A-Q-KIT

MH400-QT-K

$51.95

per ballast

SKU: MH400-QT-K

Mfr Part: KEYSTONE MH-400A-Q-KIT

Color Temp: N/A

KEYSTONE CATALOG
400W METAL HALIDE BALLAST KIT. 4-TAP. 120 THRU 277V..
$51.95

$51.95 per ballast

400W METAL HALIDE BALLAST KIT. 5-TAP. 120 THRU 480V..
KEYSTONE

KEYSTONE MH-400A-P-KIT

MH400-PT-K

$57.99

per ballast

SKU: MH400-PT-K

Mfr Part: KEYSTONE MH-400A-P-KIT

Color Temp: N/A

KEYSTONE CATALOG
400W METAL HALIDE BALLAST KIT. 5-TAP. 120 THRU 480V..
$57.99

$57.99 per ballast

400W METAL HALIDE BALLAST KIT. 480V ONLY..
KEYSTONE

KEYSTONE MH-400A-480-KIT

MH400-480-K

$61.19

per ballast

SKU: MH400-480-K

Mfr Part: KEYSTONE MH-400A-480-KIT

Color Temp: N/A

KEYSTONE CATALOG
400W METAL HALIDE BALLAST KIT. 480V ONLY..
$61.19

$61.19 per ballast

1000W METAL HALIDE BALLAST KIT. 4-TAP. 120 THRU 277V..
KEYSTONE

KEYSTONE MH-1000A-Q-KIT

MH1000-QT-K

$99.89

per ballast

SKU: MH1000-QT-K

Mfr Part: KEYSTONE MH-1000A-Q-KIT

Color Temp: N/A

KEYSTONE CATALOG
1000W METAL HALIDE BALLAST KIT. 4-TAP. 120 THRU 277V..
$99.89

$99.89 per ballast

1000W METAL HALIDE BALLAST KIT. 5-TAP. 120 THRU 480V..
KEYSTONE

KEYSTONE MH-1000A-P-KIT

MH1000-PT-K

$105.29

per ballast

SKU: MH1000-PT-K

Mfr Part: KEYSTONE MH-1000A-P-KIT

Color Temp: N/A

KEYSTONE CATALOG
1000W METAL HALIDE BALLAST KIT. 5-TAP. 120 THRU 480V..
$105.29

$105.29 per ballast

1000W METAL HALIDE BALLAST KIT. 480V ONLY..
KEYSTONE

KEYSTONE MH-1000A-480-KIT

MH1000-480/KIT-K

$90.43

per ballast

SKU: MH1000-480/KIT-K

Mfr Part: KEYSTONE MH-1000A-480-KIT

Color Temp: N/A

KEYSTONE CATALOG
1000W METAL HALIDE BALLAST KIT. 480V ONLY..
$90.43

$90.43 per ballast

1500W METAL HALIDE BALLAST KIT. 4-TAP. 120 THRU 277V..
KEYSTONE

KEYSTONE MH-1500A-Q-KIT

MH1500-QT-K

$161.19

per ballast

SKU: MH1500-QT-K

Mfr Part: KEYSTONE MH-1500A-Q-KIT

Color Temp: N/A

KEYSTONE CATALOG
1500W METAL HALIDE BALLAST KIT. 4-TAP. 120 THRU 277V..
$161.19

$161.19 per ballast

1500W METAL HALIDE BALLAST KIT. 5-TAP. 120 THRU 480V
KEYSTONE

KEYSTONE MH-1500A-P-KIT

MH1500-PT-K

$159.99

per ballast

SKU: MH1500-PT-K

Mfr Part: KEYSTONE MH-1500A-P-KIT

Color Temp: N/A

KEYSTONE CATALOG
1500W METAL HALIDE BALLAST KIT. 5-TAP. 120 THRU 480V
$159.99

$159.99 per ballast

Viewing Page 1 of 1

Metal halide ballasts work by converting a range of electrical voltages into optimal charges to initiate and sustain the electrical arcs that provide illumination in gas-discharge lights. Fluorescent ballasts use energy more efficiently than incandescent lights by converting between 20 and 30 percent of electrical output into light. Fluorescent lamps last up to 18 times longer than incandescent lights and continue to deliver up to 80 percent of their initial light throughout the bulb's life cycle. Modern ballasts operate at higher cycling rates than older equipment, so you get less humming and flickering than was common with older fluorescent technology.

Choosing the Right Ballast

Designs and functions are different for each type of lamp, so choose the right ballast based on the lamp's ANSI rating, start method, bulb type and ballast factor. Fluorescent lamps can deliver a range of lumen outputs, and ballasts control how bright the actual output will be. Modern ballasts can often work with more than one type of lamp by allowing voltages that range from 100 volts to 300 volts.

Comparing Lighting Options

Compare lighting requirements to see whether you can use one type of ballast for multiple lamps to simplify ordering or whether it makes better sense to stock specific ballasts for each application to save energy and extend bulb life. The federal government is gradually phasing out incandescent lighting, so installing more energy-efficient lamps is becoming increasingly more essential for home and business owners.