Circuit Breaker & RCD Selection Guide

A six-page PDF step-by-step selection algorithm for miniature circuit breakers (B/C/D curves) and residual current devices (10/30/100/300 mA, AC/A/B types), plus a fully automated Excel calculator.

Input load power, voltage, and type – the spreadsheet returns recommended protective devices and checks selectivity. Suitable for both training and real-world design.

• MCB selection guide: B, C, D trip curves explained
• RCD selection: 10/30/100/300 mA, AC/A/B types
• Automated Excel calculator with selectivity check
• Fully editable formulas
• Suitable for training and real-world electrical design
• Immediate download after purchase

Format: PDF (6 pages) + Excel (.xlsx)