Pulse Start Metal Halide Ballasts. The pulse start metal halide ballasts are designed to work better in cooler temperatures or from greater distances from the light. The new generation of ballasts uses high starting voltages to power lamps, resulting in a higher lumen rating.

Keystone 175W Pulse Start Metal Halide Ballast Kit Five Tap
- Brand: Keystone
- Lamp Type: ;Pulse Start Metal Halide
- Wattage controlled: 175
- Voltage: 120/208/240/277
- ANSI Code: M137/M152
- Min Start Temp: -30 C
- Power Factor: High
- Warranty: 2 Years

ITEM: MPS-175A-P-KIT
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Keystone 175W Pulse Start Metal Halide Ballast Kit Quad Tap
- Brand: Keystone
- Lamp Type: ;Pulse Start Metal Halide
- Wattage controlled: 175
- Voltage: 120/208/240/277
- ANSI Code: M137/M152
- Min Start Temp: -30 C
- Power Factor: High
- Warranty: 2 Years

ITEM: MPS-175A-Q-KIT
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Keystone 200W Pulse Start Metal Halide Ballast Kit Quad Tap
- Brand: Keystone
- Lamp Type: ;Pulse Start Metal Halide
- Wattage controlled: 200
- Voltage: 120/208/240/277
- ANSI Code: M136
- Min Start Temp: -30 C
- Power Factor: High
- Warranty: 2 Years

ITEM: MPS-200A-Q-KIT
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Keystone 200W Pulse Start Metal Halide Ballast Kit Five Tap
- Brand: Keystone
- Lamp Type: ;Pulse Start Metal Halide
- Wattage controlled: 200
- Voltage: 120/208/240/277/480
- ANSI Code: M136
- Min Start Temp: -30 C
- Power Factor: High
- Warranty: 2 Years

ITEM: MPS-200A-P-KIT
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Keystone 250W Pulse Start Metal Halide Ballast Kit Quad Tap
- Brand: Keystone
- Lamp Type: ;Pulse Start Metal Halide
- Wattage controlled: 250
- Voltage: 120/208/240/277
- ANSI Code: M138/M153
- Min Start Temp: -30 C
- Power Factor: High
- Warranty: 2 Years

ITEM: MPS-250A-Q-KIT
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Keystone 250W Pulse Start Metal Halide Ballast Kit Five Tap
- Brand: Keystone
- Lamp Type: ;Pulse Start Metal Halide
- Wattage controlled: 250
- Voltage: 120/208/240/277/480
- ANSI Code: M138/M153
- Min Start Temp: -30 C
- Power Factor: High
- Warranty: 2 Years

ITEM: MPS-250A-P-KIT
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Keystone 320W Pulse Start Metal Halide Ballast Kit Quad Tap
- Brand: Keystone
- Lamp Type: ;Pulse Start Metal Halide
- Wattage controlled: 250
- Voltage: 120/208/240/277
- ANSI Code: M132/M154
- Min Start Temp: -30 C
- Power Factor: High
- Warranty: 2 Years

ITEM: MPS-320A-Q-KIT
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Keystone 320W Pulse Start Metal Halide Ballast Kit 5 Tap
- Brand: Keystone
- Lamp Type: ;Pulse Start Metal Halide
- Wattage controlled: 250
- Voltage: 120/208/240/277/480
- ANSI Code: M132/M154
- Min Start Temp: -30 C
- Power Factor: High
- Warranty: 2 Years

ITEM: MPS-320A-P-KIT
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Keystone 350W Pulse Start Metal Halide Ballast Kit Quad Tap
- Brand: Keystone
- Lamp Type: ;Pulse Start Metal Halide
- Wattage controlled: 350
- Voltage: 120/208/240/277
- ANSI Code: M131/M171
- Min Start Temp: -30 C
- Power Factor: High
- Warranty: 2 Years

ITEM: MPS-350A-Q-KIT
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Keystone 350W Pulse Start Metal Halide Ballast Kit Five Tap
- Brand: Keystone
- Lamp Type: ;Pulse Start Metal Halide
- Wattage controlled: 350
- Voltage: 120/208/240/277/480
- ANSI Code: M131/M171
- Min Start Temp: -30 C
- Power Factor: High
- Warranty: 2 Years

ITEM: MPS-350A-P-KIT
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Keystone 400W Pulse Start Metal Halide Ballast Kit Quad Tap
- Brand: Keystone
- Lamp Type: ;Pulse Start Metal Halide
- Wattage controlled: 400
- Voltage: 120/208/240/277
- ANSI Code: M135/M155
- Min Start Temp: -30 C
- Power Factor: High
- Warranty: 2 Years

ITEM: MPS-400A-Q-KIT
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ITEM: P400MLTAC4M500K
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Keystone 400W Pulse Start Metal Halide Ballast Kit Five Tap
- Brand: Keystone
- Lamp Type: ;Pulse Start Metal Halide
- Wattage controlled: 400
- Voltage: 120/208/240/277/480
- ANSI Code: M135/M155
- Min Start Temp: -30 C
- Power Factor: High
- Warranty: 2 Years

ITEM: MPS-400A-P-KIT
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ITEM: P350MLTAC4M500K
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Keystone 400W Pulse Start Metal Halide Ballast Kit 480V
- Brand: Keystone
- Lamp Type: ;Pulse Start Metal Halide
- Wattage controlled: 400
- Voltage: 480V
- ANSI Code: M135/M155
- Min Start Temp: -30 C
- Power Factor: High
- Warranty: 2 Years

ITEM: MPS-400A-480-KIT
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ITEM: B-320-MH-Q
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Keystone 450W Pulse Start Metal Halide Ballast Kit Quad Tap
- Brand: Keystone
- Lamp Type: ;Pulse Start Metal Halide
- Wattage controlled: 450
- Voltage: 120/208/240/277
- ANSI Code: M144
- Min Start Temp: -30 C
- Power Factor: High
- Warranty: 2 Years

ITEM: MPS-450A-Q-KIT
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ITEM: B320-MH/PS-5 TAP
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Keystone 450W Pulse Start Metal Halide Ballast Kit Five Tap
- Brand: Keystone
- Lamp Type: ;Pulse Start Metal Halide
- Wattage controlled: 450
- Voltage: 120/208/240/277/480
- ANSI Code: M144
- Min Start Temp: -30 C
- Power Factor: High
- Warranty: 2 Years

ITEM: MPS-450A-P-KIT
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Keystone 750W Pulse Start Metal Halide Ballast Kit Quad Tap
- Brand: Keystone
- Lamp Type: ;Pulse Start Metal Halide
- Wattage controlled: 750
- Voltage: 120/208/240/277
- ANSI Code: M149
- Min Start Temp: -30 C
- Power Factor: High
- Warranty: 2 Years

ITEM: MPS-750A-Q-KIT
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Keystone 750W Pulse Start Metal Halide Ballast Kit Five Tap
- Brand: Keystone
- Lamp Type: ;Pulse Start Metal Halide
- Wattage controlled: 750
- Voltage: 120/208/240/277/480
- ANSI Code: M149
- Min Start Temp: -30 C
- Power Factor: High
- Warranty: 2 Years

ITEM: MPS-750A-P-KIT
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Keystone 1000W Pulse Start Metal Halide Ballast Kit Quad Tap
- Brand: Keystone
- Lamp Type: ;Pulse Start Metal Halide
- Wattage controlled: 1000
- Voltage: 120/208/240/277
- ANSI Code: M141
- Min Start Temp: -30 C
- Power Factor: High
- Warranty: 2 Years

ITEM: MPS-1000A-Q-KIT
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Keystone 1000W Pulse Start Metal Halide Ballast Kit Five Tap
- Brand: Keystone
- Lamp Type: ;Pulse Start Metal Halide
- Wattage controlled: 1000
- Voltage: 120/208/240/277/480
- ANSI Code: M141
- Min Start Temp: -30 C
- Power Factor: High
- Warranty: 2 Years

ITEM: MPS-1000A-P-KIT
Select ProductPulse-start MH lamps do not have a starting probe electrode . Instead they have a high-voltage igniter that works with the ballast to start the lamp using a series of high-voltage pulses. Without the probe electrode, the amount of pinch area at the end of the arc tube is reduced, which results in a reduced heat loss.