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🏭 Industrial Electrical Conversion · Three-Phase & Single-Phase

1025 kW 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 1025 kW on a 400V Three-Phase AC (IEC Europe) circuit.

Line Current (0.85 PF)1740.54 AAt 1.0 PF: 1479.46 A
Active / Apparent Power1025.0 kW1205.88 kVA · 635.24 kVAR
Recommended Breaker2500 A (NEC)2000 A (IEC Nominal)
Recommended Copper Wire4× 1000 kcmil (Parallel)IEC Metric: 4× 400 mm²

Engineering Breakdown for 1025 kW at 400V

Input Rating1025 kW (400V Three-Phase AC (IEC Europe))
Amperage at 0.85 Power Factor (Industrial Motor/Transformer)1740.54 Amps
Amperage at 1.00 Power Factor (Resistive Load)1479.46 Amps
Real Power (kW / Watts)1025.0 kW (1,025,000 W)
Apparent Power (kVA) & Reactive Power (kVAR)1205.88 kVA / 635.24 kVAR
Equivalent Mechanical Horsepower (HP)1374.55 HP
NEC 125% Continuous Circuit Breaker2500 A
Minimum Copper Conductor (100 ft / 30 m, ≤3% Drop)4× 1000 kcmil (Parallel) (NEC) / 4× 400 mm² (IEC)

Frequently Asked Questions

How many amps is 1025 kW at 400V (3-Phase)?

At 400V Three-Phase AC (IEC Europe), 1025 kW equals 1740.54 Amps at an industrial power factor of 0.85 (or 1479.46 Amps at unity power factor 1.0).

What size breaker and wire is needed for 1025 kW at 400V?

For 1740.54A continuous load, NEC requires a 125% rated breaker of 2500A with 4× 1000 kcmil (Parallel) copper conductors, while IEC standard sizing uses a 2000A breaker with 4× 400 mm² copper cable.

Other Power Ratings & Voltages

5 kW at 400V (3P)10 kW at 400V (3P)15 kW at 400V (3P)20 kW at 400V (3P)25 kW at 400V (3P)30 kW at 400V (3P)45 kW at 400V (3P)50 kW at 400V (3P)75 kW at 400V (3P)100 kW at 400V (3P)150 kW at 400V (3P)200 kW at 400V (3P)250 kW at 400V (3P)500 kW at 400V (3P)1025 kW at 120V Single-Phase AC1025 kW at 208V Single-Phase AC1025 kW at 230V Single-Phase AC (IEC)1025 kW at 240V Single-Phase AC (NEC)1025 kW at 208V Three-Phase AC1025 kW at 230V Three-Phase AC1025 kW at 415V Three-Phase AC (UK / AU)1025 kW at 480V Three-Phase AC (US Industrial)1025 kW at 600V Three-Phase AC (Canada / Heavy)1025 kW at 24V DC Direct Current1025 kW at 48V DC Battery / Telecom Bus