Ushio WA09500 Metal Halide 54.5V 24W Replacement Lamp

The Ushio WA09500 is not a general-purpose lamp — it is an engineered replacement for precision lighting systems where color accuracy is a functional specification, not an aesthetic preference. Its CRI 100 rating places it in the same category as daylight standards used in colorimetry labs, medical imaging devices, print proofing stations, and professional inspection systems. In an MR11 form factor, it delivers full-spectrum output in a compact package sized to work within the precision optics of Solarc-series fixtures. The 24W input (21W operating) keeps thermal load manageable relative to the quality of output it produces.

Manufactured in the USA, the WA09500 reflects the production consistency that matters in calibrated applications — color temperature variance between production units can affect workflows where the lamp is the reference source. Installation is direct for supported systems: drop it into a compatible Solarc fixture and the form factor and operating parameters match without modification. The 60V / 0.40A operating requirement means the correct electronic ballast is a prerequisite — this lamp does not work with standard sockets. Plan for warm-up time before rated output is reached, and account for restrike delay when designing duty cycles. For the systems it is built for, it performs as a long-life, color-stable replacement that holds its output characteristics through normal service intervals.