Sylvania 54241 HTI 400W/D3/75 SHARXS

Product Overview

Sylvania HTI 400W D3 75 SHARXS — 400W 50V Short-Arc Metal Halide Lamp, 7500K, SFc10-4 Base

The Sylvania HTI 400W D3 75 SHARXS is a 400-watt, 50-volt short-arc metal halide discharge lamp from Sylvania (formerly Osram), designed for professional entertainment, medical, projection, and industrial applications. With an SFc10-4 base, T18 single-ended reflector construction, 7500K daylight color temperature, CRI 80, 26,000 lumens, universal burn position, and a 1,000-hour rated life, this lamp delivers powerful, stable illumination with tight beam control for demanding optical systems. Enclosed fixture required. Verify wattage, voltage, and base type before ordering.

Wattage

400W

HTI Short-Arc MH

Lumens

26,000 lm

Initial Output

Color Temp

7500K

Daylight

Base

SFc10-4

Single-Ended

Rated Life

1,000 hrs

Average Life

Technical Specifications

Brand	Sylvania (formerly Osram)
Model	HTI 400W D3 75 SHARXS
Lamp Type	Short-Arc Metal Halide (HTI) — T18 Reflector, Single-Ended
Wattage	400W
Voltage	50V
Current	8.5A
Initial Lumens	26,000 lm
CRI	80
Color Temperature	7500K Daylight
Base Type	SFc10-4
Bulb Shape / Finish	T18 Reflector — Clear, Single-Ended
Burn / Operating Position	Universal
Rated Average Life	1,000 hours
Length	73mm
Fixture Requirement	Enclosed fixtures only
UPC / EAN	4008321285157

Product Overview

The Sylvania HTI 400W D3 75 SHARXS is a professional short-arc metal halide discharge lamp engineered for applications demanding maximum luminous intensity, precise beam control, and stable color output. Short-arc HTI lamps concentrate the arc into an extremely small source, enabling tight optical control in projection systems, followspots, medical luminaires, and high-output entertainment fixtures. At 7500K daylight color temperature with 26,000 lumens, this lamp produces the crisp, blue-white output characteristic of professional entertainment and cinema lighting systems.

This lamp was formerly manufactured under the Osram brand and is now marketed by Sylvania — performance specifications are unchanged. Requires a compatible ballast and ignitor rated for HTI short-arc discharge lamps at 400W/50V. Always confirm the correct lamp model against your fixture's manufacturer documentation — short-arc lamps are equipment-specific and substituting an incorrect model can damage the fixture or create a safety hazard.

Compatible Applications

Entertainment and effect lighting — Followspots, moving head fixtures, and professional theatrical and concert lighting systems.
Digital projection — Cinema, large-venue, and simulation projectors requiring high-luminance short-arc sources.
Medical and surgical lighting — Intense, color-accurate illumination for diagnostic and surgical equipment.
Industrial and laboratory — UV curing systems, photometric testing, and precision optical instruments.
Aviation lighting — Runway and signal lighting applications where specified.

Before Ordering — Verify

Lamp Model: Confirm your fixture manual specifies HTI 400W D3 75 SHARXS or an equivalent. Short-arc lamps are equipment-specific — always verify against fixture documentation.
Voltage: Confirm the ballast output is rated for 50V.
Wattage: Confirm the fixture and ballast are rated for 400W.
Base Type: Confirm the lampholder accepts SFc10-4.
Physical Fit: Confirm 73mm length fits within your fixture's lamp housing.

Safety and Handling Guidelines

High UV Radiation: This lamp emits high levels of ultraviolet radiation. Use only in enclosed fixtures with appropriate UV shielding — never operate in open or unshielded housings.
High Internal Pressure: Short-arc metal halide lamps operate under extreme internal pressure. Always wear safety glasses and protective gear when handling. Never handle a damaged or cracked lamp without eye and hand protection.
Do not touch the lamp envelope with bare hands. Use clean gloves or a lint-free cloth. Skin oils cause hot spots. If accidentally touched, clean with isopropyl alcohol before use.
Allow Cooling: Allow the lamp to cool completely before handling or removal — operating temperatures are extremely high.
Compatible Ballast and Ignitor Required: This lamp requires a ballast and ignitor specifically rated for HTI short-arc discharge operation. Do not use with general-purpose HID ballasts.
Mercury Content: Contains mercury. Dispose per local lamp recycling regulations.

Compliance

Contains mercury — subject to applicable lamp recycling and disposal regulations.
Verify RoHS compliance status and additional certifications with the Sylvania manufacturer specification sheet prior to use in regulated installations.