Osram 41840 WFL 75W 12V 40Dg

The Osram Halospot® 111 41840WFL 75W 12V Lamp is a commercial-grade, low-voltage tungsten halogen reflector lamp engineered for high-impact retail displays, large-scale gallery exhibitions, and premium architectural downlight canisters. Delivering 850 initial lumens of crisp 3000K warm white illumination, this professional AR111 lamp projects a beautifully balanced 40° wide flood beam spread yielding a powerful 1,500 center beam candlepower (CBCP). Outfitted with an industry-standard G53 screw terminal bi-pin base and an integrated anti-glare metal vertex cap, it provides a 3,000-hour rated average service life while utilizing a massive 111mm block-aluminum reflector envelope to isolate backend sockets from intensive thermal loads.

ADL Supply Expert Application & Replacement Guide

The Osram Halospot 111 series bulb is an elite property maintenance standard specified heavily by gallery lighting directors, electrical contractors, and luxury commercial display teams. This heavy-duty module is engineered explicitly to seat inside specialized low-voltage track spot heads, gimbal ring tracks, large retail clothing racks, and exhibition display downlights where a wide, high-intensity flood beam pattern (1,500 CBCP) is required to cover large merchandise arrays evenly.

Critical Thermal Dispersion Data and Terminal Wiring Warnings: Unlike standard glass dichroic fixtures that pass destructive infrared heat backward into sensitive canopy tracks, this model incorporates a heavy-duty **block-aluminum reflector shield envelope**. This design completely seals the back-end of the lamp, channeling 100% of visible light and generated thermal energy forward away from the lampholder assembly. While this process protects internal canopy wiring insulation, track transformers, and sensitive electrical joints from drying out or melting over long shifts, it does project intense localized heat forward onto targeted merchandise. Furthermore, maintenance crews must verify terminal layouts: the G53 base features flat contact tabs spaced 53mm apart that accept both direct screw wiring or push-in spade lug connectors. Ensure connections are crimped tightly—because this lamp draws 6.25 Amps at 12V, a loose terminal connection will bridge current resistance and melt the socket contacts.

Detailed Product Specifications

• Brand: Osram (Premium Professional Optic Group)
• Product Series Line: HALOSPOT® 111 Low-Voltage AR111 Series
• Osram Order Code Catalog SKU: 41840WFL (Alternative Production Reference: 41840 WFL)
• Official Trade Industry ANSI / ILCOS Identifier: HMGS//UB-75-12-G53-111/40
• Global UPC Barcode Reference: 4050300011769
• Core Technology Class: Low-Voltage Miniature Tungsten-Halogen Reflector
• Operational Wattage: 75 Watts
• Nominal Input Voltage Requirement: 12 Volts AC/DC (Step-down transformer circuit required)
• Sustained Continuous Amperage Draw: 6.25 Amps
• Initial Luminous Brightness: 850 Lumens
• Center Beam Luminous Intensity: 1,500 Candelas (cd)
• Luminous Efficacy Ratio: 11.3 Lumens per Watt (LPW)
• Beam Spread Profile: 40° Wide Flood (WFL)
• Color Temperature Configuration: 3000K Warm White Halogen Balance
• Color Rendering Index (CRI): 100 Ra (Absolute Light Quality Representation)
• Reflector Envelope Construction: Hard Block-Aluminum Coating (Forward Thermal Passing)
• Front Lens Treatment: Open Face Design with Integrated UV-Filter Glass Screening
• Optics Framework: Precision Segmented Diamond-Faceted Reflector Bowl
• Base Type Configuration: G53 (Flat Twin Tabs for Screw or Spade Terminal Connectors)
• Maximum Overall Length (MOL): 2.64" Inches (67.0mm actual from cap to base plate)
• Bulb Nominal Diameter (DIA): 4.37" Inches (AR111 / 111.0mm actual reflector rim width)
• Rated Average Lifespan: 3,000 - 4,000 Hours (Constant Regulated Voltage)
• Chassis Burn Position Limit: Universal — Operates reliably in any mounting angle
• Safety Standard Compliance: Conforms fully with IEC 60598-1 open fixture security parameters

Operation, Safety & Mounting Compliance

Low-Voltage Transformer and Dimming Controls

This 75-watt capsule operates strictly on low-voltage 12V grids driven by high-quality electronic or magnetic core-and-coil step-down transformers. Check your transformer nameplate under load to confirm total available wattage parameters safely accommodate the heavy 75W continuous load draw. This module is 100% dimmable to low light levels—to prevent filament buzzing or flicker loops across the system, ensure that your wall dimmers are specifically certified for low-voltage lighting control (electronic low-voltage ELV or magnetic low-voltage MLV tracking, matching your transformer's internal circuit framework).

Handling Rules and Casing Maintenance

Never handle the outer glass casing or base plate with bare hands during installation sweeps. Human fingers automatically deposit microscopic alkaline body oils that fuse chemically to the quartz lens during rapid heating cycles. This containment creates localized hot spots, prompting envelope clouding, micro-fracturing, and accelerated pressure breakdown. Installers must execute re-lamping sweeps using clean cotton tech gloves, a microfiber lint-free wipe, or its protective cardboard wrapper sleeve. Meticulously wipe the bulb with isopropyl alcohol if skin tracking occurs. Let the fixture cool down for 15 minutes before servicing components to prevent contact skin burns.

Commercial Equipment Industry Cross-References

• Philips Alternative: 75W 12V AR111 40D Wide Flood G53
• Sylvania Match: 75AR111/WFL40 / Heritage Series Line
• Ushio Cross: 1002241 / Glass-Reflector AR111 75W Flood

Bulk Commercial Lighting Supply & Project Support

ADL Supply handles volume distribution shipments, multi-pack logistics, and contractor project quotes for procurement teams, schools, and warehouse facilities nationwide.

For specialized contractor pricing tiers, job-site pallet deliveries, or comprehensive submittal documentation, contact our support team directly at 1-800-235-3489. We are your commercial supply partners as an authorized wholesale Lighting Distributor In Doral, Florida.