Quickly screen current-limiting fuses and estimate peak let-through energy with the Instant Peak Let-Through & I2t calculator. Fast, accurate, and easy to use, it helps engineers pick the right protection in seconds.
Need the right disconnect switch size fast? This quick guide walks you through calculating it from load current and matching the result to standard, off-the-shelf options.
Find the right electrical fuse size for any circuit with straightforward calculations, standard size charts, and a simple rule of thumb—so you can protect equipment without guesswork. This friendly guide makes choosing the correct fuse from load current quick and reliable.
Use the SPD SCCR calculator to quickly verify that your surge protective devices can handle the available fault current—fast, reliable checks without the guesswork. Protect equipment and simplify compliance with clear, instant results.
Calculate transformer overcurrent and overload protection per NEC standards quickly and accurately with our easy-to-use online calculator tool.