Sylvania 54243 HSD 250W/80 4ARXS Metal Halide Short-Arc Lamp — 250W | 8000K Ice Daylight | 17,000 Lumens | GY9.5 Bi-Pin Base

The Sylvania Entertainment 54243 (HSD 250W/80 4ARXS) Lamp is a professional-grade, high-intensity metal halide short-arc discharge bulb engineered exclusively for moving-head intelligent automated fixtures, theatrical ellipsoidal spots, concert wash luminaires, and architectural profile projectors. Delivering a brilliant 17,000 initial lumens of intense 8000K ice-daylight illumination, this premium double-ended style single twin-tube module utilizes an advanced high-pressure gas fill to achieve an exceptional color rendering index of 85 CRI. Outfitted with robust, precision GY9.5 bi-pin bases and patented 4ARXS eXtreme Seal thermal protection technology, it provides a reliable 3,000-hour rated average service life under demanding staging operational cycles.

ADL Supply Expert Application & Replacement Guide

The Sylvania HSD 250W/80 4ARXS metal halide lamp is an industry-standard concert entertainment baseline specified universally across nightlife clubs, multi-tier theater spaces, touring production stages, and dynamic outdoor architectural spotlight tracks. Featuring an intensely focused compact arc gap, it delivers a piercing, blue-rich 8000K daylight beam that cuts through heavy synthetic stage fog and laser paths with absolute definition, maximizing beam output contrast throughout its operational lifecycle.

Critical 4ARXS eXtreme Seal Protection and High-Voltage Ignition Requirements: Stage technicians and lighting crew chiefs executing lamp swaps must analyze operational temperature parameters closely prior to checkout: this module utilizes patented 4ARXS metallurgy, applying a robust chromium-coated layer over the internal molybdenum foil contacts to safely resist localized pinch temperatures up to 450°C. This specialized shielding prevents rapid seal oxidation and structural micro-cracking common inside modern high-density automated moving-head fixtures.

Please enforce proper initialization procedures during installation: while this short-arc capsule maintains an 85V operating voltage baseline, striking the cold gas column requires an intense 2.5 kV to 4.5 kV (4,500 Volts) high-voltage pulse strike from an approved ballast electronic igniter. Ensure the GY9.5 bi-pin prongs sit fully seated and locked with clean contact fields inside the lampholder socket to prevent catastrophic arcing or terminal melting from structural fixture vibrations.

Detailed Product Specifications

• Brand Name: Sylvania (OSRAM Sylvania Entertainment Lighting Division)
• Product Series Line: HSD Metal Halide Short-Arc eXtreme Seal Series
• Sylvania NAED Factory Product Catalog Order Code SKU: 54243
• Full Manufacturer Description Model: HSD 250W/80 4ARXS
• UPC / EAN Logistical Tracking Number: 4008321625786
• Core Technology Class: High-Intensity Discharge (HID) — High-Pressure Metal Halide Short-Arc Capsule
• Primary Control Requirement: Calibrated 250W Electronic or Magnetic HID Entertainment Ballast + Igniter Kit
• Operational Power: 250 Watts
• Nominal Arc Operating Voltage: 85V AC Baseline current tracking
• Continuous Operating Amperage Draw: 3.2 Amperes current load profile
• Required Cold Ignition Pulse Threshold: 2.5 Kilovolts Minimum to 4.5 Kilovolts Maximum (2500V–4500V Spike)
• Initial Luminous Brightness: 17,000 Lumens (Post standard seasoning burn)
• Color Temperature Configuration: 8000K Cool Ice Daylight (Blue/UV-Rich Spectrum Finish)
• Color Rendering Index (CRI): 85 Ra (High Theatrical Rendering Precision Baseline)
• Base Type Configuration: GY9.5 Bi-Pin Base (Molded ceramic alignment insulation plug)
• Maximum Pin Surface Temperature Limits: 450°C Max Pinch Seal safety threshold via 4ARXS shielding
• Maximum Overall Length (MOL): 108.0mm (4.25" Inches total footprint size pin tip to envelope apex)
• Light Center Length (LCL Dimension): 55.0mm (Precision calibrated optical focal height center)
• Electrode Arc Gap Distance: 5.0mm actual discharge center gap width
• Rated Average Service Lifespan: 3,000 Hours (Driven by approved electronic high-frequency gears)
• Chassis Burn Position Limit: Universal — Operates reliably at any horizontal, vertical, or tilted stage angle

Operation, Safety & Mounting Compliance

Low-Frequency Square-Wave Electronic Balance Control

When driven by modern high-efficiency solid-state electronic entertainment ballasts, this lamp processes power over precise low-frequency square waves, completely preventing internal acoustic arc resonance and visual plasma shifting loops typical under old magnetic line signals. This advanced electronic stabilization maintains color-point integrity across your entire moving-head tracking wash row, ensuring adjacent spotlights project matched visual depth without color drift.

Mercury Content Dosing and Safe Bulk Recycling Protocols

This short-arc high-intensity capsule utilizes a highly concentrated chemical vapor volume of heavy-metal mercury to activate its hyper-bright discharge illumination track. While structurally shielded to endure extreme physical moving acceleration and intense internal atmospheres, it remains a hazardous component at end-of-life cycles. National environmental safety laws mandate processing spent modules through certified commercial e-waste repository centers during staging teardown sweeps rather than discharging them into municipal solid landfills or common trash streams.

Commercial Moving Head Cross-References

This premium 250W GY9.5 short-arc lamp serves as a replacement or alternative for the following lines:

• Philips Alternative Match: MSD 250/2 / USA Product Order Code 245365
• Osram Group Alternative: HSD 250W/78 4ARXS Lumend Line / Code equivalent
• Grainger Reference: Automated Stage Spot Special Application Bulb / SKU 40X562

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.