power distribution: fast, affordable circuit breakers.Their prototype semiconductor breaker interrupts a 1,400-volt DC fault in under 50 microseconds—orders of magnitude faster than today’s mechanical devices. Why does it matter?👉 AI-era data centers demand more megawatts than local grids can supply.👉 DC distribution is inherently more efficient—but also far riskier without protection.👉 Legacy breakers were built for AC, not DC.ORNL’s design uses old-school thyristors with a ...