// TECHNICAL DEFINITIONS
Engineering Glossary
Clear, answer-first definitions for electrical, solar, and industrial electronics specifications.
MPPT
Maximum Power Point Tracking — an electronic algorithm in solar charge controllers that optimizes PV array voltage to harvest peak power.
Mono-PERC
Monocrystalline Passivated Emitter and Rear Cell — solar cell technology with a reflective rear layer that improves photon capture efficiency.
MCCB Icu
Ultimate Short-Circuit Breaking Capacity — the maximum fault current in kA a Molded Case Circuit Breaker can safely interrupt per IEC 60947-2.
Inrush Current
The initial surge of current drawn by electrical equipment (like DIN power supplies or transformers) when first powered on.