PERKO Quartz-Halogen Medium Prefocus Bulb 500W/120V - Fig. 0844
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PERKO Quartz-Halogen Medium Prefocus
The PERKO Quartz-Halogen Medium Prefocus bulb (Figure No. 0844) is a purpose-built replacement lamp designed specifically for PERKO Solar-Ray® Searchlights. Operating at 120 volts and 500 watts, this quartz-halogen bulb produces a maximum candlepower output of 3,861,000, delivering an approximate visible range of 1-3/4 miles under ideal photometric conditions. The compact T6 shape and P28S Medium Prefocus base (Socket Code Letter E, manufacturer bulb code BTL) ensure precise alignment and reliable performance in searchlight applications.
Range figures are based on photometric measurements of beam candlepower output under ideal conditions. Many factors — including atmospheric conditions, the size and color of the target, background lighting, and other environmental variables — may reduce effective range considerably. These figures are intended only as a guide for comparing different bulb and voltage options.
The rated average laboratory life of 500 hours is obtained under closely controlled laboratory conditions at the design voltage. Actual service life in marine or working environments may be shorter due to shock, vibration, voltage fluctuation, and other real-world factors.
Please Order Carefully — Bulbs Are Not Returnable.
Key Features
- Replacement bulb for PERKO Solar-Ray® Searchlights
- 500 watts, 120 volts
- Medium Prefocus socket (P28S), Socket Code Letter E
- Manufacturer bulb code: BTL
- Maximum candlepower output: 3,861,000
- Approximate range: 1-3/4 miles under ideal conditions
- Horizontal beam spread: 3.0 degrees
- Vertical beam spread: 5.4 degrees
- Rated laboratory life: 500 hours
- T6 bulb shape, clear finish
- Color temperature: 3050K; Lumens: 11,000
- Maximum overall length (MOL): 4.50 inches
