Cut through NEC 450.3 confusion with our quick selector that helps you instantly pick the best transformer primary protection. Friendly guidance and clear options make code compliance fast and painless.
Stop coordination headaches with the Pickup Separation Helper — quickly check protective device spacing and catch potential coordination errors before they cause outages.
Use our electrical coordination calculator to quickly compare screen ground-fault pickup settings against downstream breakers and ensure selective, reliable protection. Small adjustments can prevent nuisance trips while keeping your system safe and compliant.
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.