IEC 61439-1 — Low-voltage switchgear and controlgear assemblies

Clauses of IEC 61439-1 with EB-authored summaries.

Tools

MCB selection by load
Breaker rating and trip curve selection (B/C/D) with coordination and selectivity check.
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Phase load balancing
Consumer distribution across phases L1/L2/L3 to minimize imbalance in a three-phase grid.
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Sticker Generator for Panel
Create and print labels for MCBs, RCDs, RCBOs. Multiple rails, phase colors, exact DIN size. Logo and QR code when printing.
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