Motor Full-Load Current
Compute FLA for a 3-phase or single-phase motor — sizing contactors, breakers, OLR.
Inputs
Result
Full-load current
53.4 A
3-phase, 92% η, 0.85 PF
Contactor size (≥)
62 A
AC-3 utilisation, +15% safety
MPCB / breaker (≥)
67 A
+25% over FLA
OLR setting
56.0 A
1.05× FLA per IEC 60947-4
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Indicative only — final values must be verified against your single-line diagram, applicable standards (IEC 60364 / 61439 / 60947 / 60529 / 60364-5-52) and local regulations.
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