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Ushio MHR-250N 250W metal halide bulb with ellipsoidal dichroic reflector and AMP connector

Ushio

Ushio MHR-250N 250W Metal Halide Standard Bulb

SKU CH-ZJXA-7MP63

250 watt metal halide bulb delivering 3500 lumens at 4200K for fibre optic and light pipe systems

  • TypeHigh Intensity Discharge
  • Lumen Range3500
  • Wattage250
  • Color Temperature4200K
  • Life Time Hours4000
  • Color Rendering Index72
  • Delivers 3500 lumens for bright fibre-optic illumination
  • 250-watt metal-halide arc produces 4200K cool-white light
  • Cold-mirror reflector directs heat rearward protecting fibres
  • 85 lumens per watt efficacy reduces running cost
  • Aligned to fibre during manufacture for precise coupling

High-Intensity Discharge Lamp for Fiber Optics

The Ushio MHR-250N is a 250 watt metal halide bulb built for fiber optic and light pipe systems. It suits installations that require a standardized AMP connector and a cold mirror reflector to manage heat at the front end. The lamp aligns to the fiber during manufacturing for consistent output in professional lighting setups.

Thermal Management and Ballast Compatibility

A dichroic coating on the ellipsoidal reflector directs most heat radiation toward the rear of the lamp. This design supports unproblematic operation with standard M80 ballasts for the 250 watt model, reducing system complexity. The compact form factor fits existing housings without additional cooling requirements.

6.5 mm Arc Gap Determines Fiber Coupling

The fixed 6.5 mm arc gap is the critical dimension that matches the lamp to fibers larger than 8 mm at the input. Buyers working with smaller fiber diameters or different connector standards cannot use this lamp effectively. The arc geometry is not adjustable and defines the optical compatibility.

Highlights

  • Delivers 3500 lumens for bright fibre-optic illumination
  • 250-watt metal-halide arc produces 4200K cool-white light
  • Cold-mirror reflector directs heat rearward protecting fibres
  • 85 lumens per watt efficacy reduces running cost
  • Aligned to fibre during manufacture for precise coupling

Specifications

BrandUshio
TypeHigh Intensity Discharge
Lumen Range3500
Wattage250
Color Temperature4200K
Life Time Hours4000
Color Rendering Index72

Questions about this item

How is the Ushio MHR-250N installed and which step is often missed?

Install the bulb into a compatible M80 ballast fixture and connect the standardized AMP connector; the step often missed is verifying the 6.5 mm arc gap alignment before powering on.

What maintenance or replacement will the Ushio MHR-250N need later?

Replace the bulb after approximately 4000 hours of use when light output drops below the 3500 lumen rating; the cold mirror reflector requires no separate maintenance.

What limit appears first during sustained use of the Ushio MHR-250N?

The 4000-hour rated life is the first limit; after this the arc degrades and lumen output falls below the specified 85 lumens per watt efficacy.

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