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Osram

64255 54122 Osram 20W 8V MR11 G4 Clear Halogen Lamp
20.49 USD
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Match OSRAM 64255, Americas product number 54122, or the exact 8V 20W reflector-lamp reference in the equipment documentation. Similar MR11 or G4 lamps can differ in focal length, reflector design, cooling requirements, and electrical rating.

Need help confirming fit? Email help@dynamiclamps.com with the equipment manufacturer, model number, and a clear photo of the existing lamp markings.

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Specifications

OSRAM 64255 / 54122 20W 8V Halogen Reflector Lamp

  • Manufacturer: OSRAM
  • Global order reference: 64255
  • Americas product number: 54122
  • Power: 20 W
  • Voltage: 8 V AC
  • Base: G4 two-pin reflector-lamp base
  • Reflector diameter: 35 mm
  • Maximum overall length: 32 mm
  • Focal length: 26 mm
  • Color rendering index: 100
  • Nominal lamp weight: 20 g
  • Cooling: Designed for equipment with forced cooling

Older catalog records may describe this lamp as MR11/GZX4 and list 3200 K and 50-hour nominal life. Use the current OSRAM order code and the equipment requirement as the controlling identifiers.

Equipment compatibility

Compatible-equipment references

These light-source references specify an 8V 20W halogen reflector lamp in the 64255/54122 class. Equipment revisions can vary; verify the installed lamp code, 26 mm focal length, base, and cooling arrangement before ordering.

  • Leica L2 fibre-optic cold-light source
  • Schott KL 200 cold-light source
  • Carl Zeiss KL 200 cold-light source — lamp reference 417085-9005-000
  • Carl Zeiss KL 200 120V and 230V source assemblies when the lamp compartment specifies 8V 20W

The mains input shown on a light source is not the lamp voltage. Replace only with the low-voltage lamp specified inside the equipment or in its service documentation.

Cross references

Codes that may appear in service records

  • OSRAM 64255
  • OSRAM 54122
  • Carl Zeiss 417085-9005-000
  • A1/269 — legacy microscope-lamp reference; verify electrical and optical specifications

No separate stocked cross-brand alternative is currently linked in our active catalog. Do not substitute a visually similar 8V 20W lamp unless the focal length, reflector, base, and equipment cooling requirement also match.

Documentation & safety

Documentation

OSRAM 64255 datasheet

Safety and handling

Halogen lamps operate at high temperature and pressure. Disconnect power, allow the lamp to cool, avoid touching the reflector or envelope with bare fingers, keep all protective covers in place, and follow the equipment manufacturer's installation instructions.

This lamp is designed for forced-cooled equipment. Do not operate it in an unventilated holder or outside the intended enclosure.

Specifications are based on the current OSRAM product sheet. Equipment references were included only where the documentation identifies the same 8V 20W reflector-lamp class; production revisions can still vary.