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Clear tubular halogen bulb with medium prefocus P28s base

Antique Light Bulb Co.

Antique Light Bulb Co. BTH 575W 115V P28s 54365 Halogen standard bulb

SKU CH-NWT1-27MXB

A 575-watt halogen bulb with a P28s medium prefocus base delivering 15,500 lumens at 3,250 K colour temperature and 100 CRI for 300 hours

  • TypeHalogen Bulbs
  • Lumen Range15500
  • Wattage575
  • Color Temperature3250K
  • Life Time Hours300
  • Color Rendering Index100
  • 575 watts delivers 15,500 lumens for high-output illumination
  • 3,250 K colour temperature produces a bright white light
  • CRI 100 renders colours with maximum accuracy
  • P28s medium prefocus base fits compatible fixtures directly
  • 300-hour rated life matches standard SSTV lamp expectancy

Halogen lamp for stage and studio

The Antique Light Bulb Co. BTH 54365 is a 575 watt halogen lamp built for fixtures that accept a P28s medium prefocus base. It runs at 115 volts and delivers 15500 lumens at a 3250 kelvin colour temperature with a colour rendering index of 100. Designed as a direct replacement for 500 watt 120 volt BTL types, it suits theatre, film and television lighting where accurate colour and high output are required.

Output capacity and limits

At 575 watts the lamp produces thirty percent more luminous flux than the 500 watt lamps it replaces, giving a brighter, whiter beam for demanding productions. The rated life is 300 hours, matching typical studio lamp cycles, so it covers a standard run of performances before replacement. It is not intended for continuous architectural lighting or installations where a multi-thousand hour lifespan is expected.

Heat, noise and electrical load

As a halogen source the lamp generates significant heat during operation and requires fixtures rated for the thermal load; no active cooling is built into the bulb itself. It draws 575 watts at 115 volts, so the supply circuit and dimmer must be sized accordingly. The lamp operates silently, adding no acoustic noise to the venue.

Highlights

  • 575 watts delivers 15,500 lumens for high-output illumination
  • 3,250 K colour temperature produces a bright white light
  • CRI 100 renders colours with maximum accuracy
  • P28s medium prefocus base fits compatible fixtures directly
  • 300-hour rated life matches standard SSTV lamp expectancy

Specifications

BrandBulbamerica
TypeHalogen Bulbs
Lumen Range15500
Wattage575
Color Temperature3250K
Life Time Hours300
Color Rendering Index100

Questions about this item

Will the P28s base fit the same socket as my existing 500W 120V BTL lamp?

Yes, the P28s medium prefocus base is a direct replacement for the 500W 120V BTL lamp socket.

How can I confirm the 3250K colour temperature and 15500 lumen output once installed?

The bulb emits a brighter, whiter light at 3250K with 15500 lumens, visibly higher than the 30 percent lower output of the BTL lamp it replaces.

Does the box include a fixture or just the T6 halogen bulb itself?

Only the 575W 115V T6 halogen bulb with P28s base is supplied; any fixture or dimmer must be purchased separately.

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