Ushio 1000545 FLW JC24V-300WA-H – 300W 24V Halogen Lamp | GY6.35 | 3500K 

10,450 lumens at 3500K with high efficacy 34.8 lm/W – a 300W/24V halogen lamp with GY6.35 base, T4 clear bulb, and CBAR6 filament for professional projection and stage lighting applications.

Quick Specs

• Brand: Ushio
• Item Code: 1000545
• ANSI / Prod. ID: FLW
• Description: JC24V-300WA-H
• Lamp Type: Halogen (T4, Clear)
• Wattage: 300 W
• Voltage: 24 V
• Base Type: GY6.35 (2-Pin)
• Bulb Shape: T4
• Bulb Finish: Clear
• Color Temperature: 3500K
• Initial Lumens: 10,450 lm
• Efficacy: 34.8 lm/W
• Rated Average Life: 50 hours
• Filament Type: CBAR6
• Burn Position: Base Down (BD)
• Maximum Overall Length (MOL): 2.17 in (55 mm)
• Bulb Diameter: 0.53 in (13.5 mm)
• Light Center Length (LCL): 30.0 mm (1.18 in)

Product Overview

The Ushio 1000545 FLW (JC24V-300WA-H) is a high-output 300‑watt, 24‑volt halogen lamp delivering 10,450 initial lumens at 3500K with a CBAR6 filament. It features a GY6.35 two‑pin base and a T4 clear bulb, making it ideal for professional projection systems, stage lighting, and specialty equipment requiring intense, focused illumination.

With an efficacy of 34.8 lumens per watt and a rated life of 50 hours, this lamp is optimized for high‑brightness applications where maximum light output is prioritized over extended life. The base‑down (BD) burn position ensures proper cooling and filament stability.

Why Choose This Product

• 10,450 lumens – extremely high output for 300W halogen: Ideal for projection, follow spots, and specialty fixtures.
• ANSI FLW – industry-standard replacement: Ensures consistent performance across compatible equipment.
• 3500K neutral white color temperature: Provides bright, natural illumination for professional environments.
• GY6.35 base – secure two‑pin connection: Common in low‑voltage halogen fixtures.
• CBAR6 filament – optimized for optical systems: Delivers a compact, intense light source.
• Ushio quality – trusted for OEM and replacement lamps.

Technical Specifications

Dimensions

Applications

• Professional projection systems – slide projectors, overhead projectors
• Stage lighting – follow spots, ellipsoidal spotlights
• Specialty equipment – medical / industrial inspection
• Compatible with Eastman Kodak Ektalite L3, L5; Elmo HP-285P, HP-285S

Compatibility & Replacement

Fixture type: Designed for low‑voltage (24V) halogen fixtures with GY6.35 two‑pin sockets. Commonly used in Kodak Ektalite projectors and Elmo overhead projectors.

Base: GY6.35 – a two‑pin base with 6.35mm pin spacing. Confirm your fixture uses GY6.35 lampholders (not G6.35 or GZ6.35).

Ballast / Transformer: Requires a 24V power supply (transformer or electronic driver) rated for at least 300W. Do not operate on higher voltage.

Before ordering, confirm:

• ANSI code – FLW: Verify your equipment specifies FLW or equivalent.
• Voltage – 24V: Ensure your fixture provides 24V AC or DC as required.
• Base type – GY6.35: Physically inspect the lampholder.
• Burn position – Base Down only: This lamp must be operated with the base facing downward for proper cooling and filament life.
• Physical dimensions: Verify your fixture accepts a T4 bulb with 2.17″ MOL, 0.53″ diameter, and 1.18″ LCL.

Ordering Information

• Brand: Ushio
• Item Code: 1000545
• ANSI Code: FLW
• Description: JC24V-300WA-H – 300W 24V Halogen Lamp, GY6.35 Base, Clear T4
• Cross Reference Part Numbers: Eiko 03480 FLW, GE 19886 FLW, Grainger 1K437, Philips 20492-5 FLW 300W 24V 24PK
• Case quantities and bulk pricing available – contact ADL Supply for volume orders.

Compliance & Certifications

• Verify UL / ETL listing status with manufacturer specification sheet.
• Verify RoHS compliance status with manufacturer specification sheet.
• Verify FDA radiation performance compliance (if applicable) with manufacturer specification sheet.
• Verify Prop 65 warning requirements with manufacturer specification sheet.

ADL Supply recommends confirming all applicable compliance data with the Ushio official product data sheet (Item Code 1000545 / FLW) prior to specification or installation.

Safety & Handling Notes

• High pressure warning – face shield required: Halogen lamps operate under high internal pressure. Always wear a face shield and protective gloves during handling and installation.
• No bare hands: Never touch the quartz envelope with bare skin. Oils cause hot spots leading to premature failure or lamp burst. Use clean gloves or a lint‑free cloth.
• Do not exceed rated voltage: Operating above 24V dramatically shortens lamp life and may cause rupture. Verify supply voltage before installing.
• Burn position – Base Down only (BD): This lamp is rated for base‑down operation only. Incorrect orientation can cause premature failure or lamp burst.
• Extreme heat and UV output: Use only in approved enclosed luminaires with appropriate UV filtering.
• Allow complete cool‑down before handling: Allow lamp to cool completely before relamping. Do not touch immediately after switching off.
• Follow your fixture manufacturer's service documentation for lamp replacement procedures.