420 kVA to Amps at 400V Three-Phase AC (IEC Europe)
Exact current (Amps), real power (kW), apparent power (kVA), mechanical horsepower (HP), breaker rating, and conductor size for 420 kVA on a 400V Three-Phase AC (IEC Europe) circuit.
Line Current (0.85 PF)606.22 AAt 1.0 PF: 606.22 A
Active / Apparent Power357.0 kW420.0 kVA · 221.25 kVAR
Recommended Breaker800 A (NEC)700 A (IEC Nominal)
Recommended Copper Wire2× 1000 kcmil (Parallel)IEC Metric: 2× 400 mm²
Engineering Breakdown for 420 kVA at 400V
| Input Rating | 420 kVA (400V Three-Phase AC (IEC Europe)) |
| Amperage at 0.85 Power Factor (Industrial Motor/Transformer) | 606.22 Amps |
| Amperage at 1.00 Power Factor (Resistive Load) | 606.22 Amps |
| Real Power (kW / Watts) | 357.0 kW (357,000 W) |
| Apparent Power (kVA) & Reactive Power (kVAR) | 420.0 kVA / 221.25 kVAR |
| Equivalent Mechanical Horsepower (HP) | 478.74 HP |
| NEC 125% Continuous Circuit Breaker | 800 A |
| Minimum Copper Conductor (100 ft / 30 m, ≤3% Drop) | 2× 1000 kcmil (Parallel) (NEC) / 2× 400 mm² (IEC) |
Frequently Asked Questions
How many amps is 420 kVA at 400V (3-Phase)?
At 400V Three-Phase AC (IEC Europe), 420 kVA equals 606.22 Amps at an industrial power factor of 0.85 (or 606.22 Amps at unity power factor 1.0).
What size breaker and wire is needed for 420 kVA at 400V?
For 606.22A continuous load, NEC requires a 125% rated breaker of 800A with 2× 1000 kcmil (Parallel) copper conductors, while IEC standard sizing uses a 700A breaker with 2× 400 mm² copper cable.
Other Power Ratings & Voltages
5 kVA at 400V (3P)10 kVA at 400V (3P)15 kVA at 400V (3P)20 kVA at 400V (3P)25 kVA at 400V (3P)30 kVA at 400V (3P)45 kVA at 400V (3P)50 kVA at 400V (3P)75 kVA at 400V (3P)100 kVA at 400V (3P)150 kVA at 400V (3P)200 kVA at 400V (3P)250 kVA at 400V (3P)500 kVA at 400V (3P)420 kVA at 120V Single-Phase AC420 kVA at 208V Single-Phase AC420 kVA at 230V Single-Phase AC (IEC)420 kVA at 240V Single-Phase AC (NEC)420 kVA at 208V Three-Phase AC420 kVA at 230V Three-Phase AC420 kVA at 415V Three-Phase AC (UK / AU)420 kVA at 480V Three-Phase AC (US Industrial)420 kVA at 600V Three-Phase AC (Canada / Heavy)420 kVA at 24V DC Direct Current420 kVA at 48V DC Battery / Telecom Bus