300 kW to Amps at 48V DC Battery / Telecom Bus
Exact current (Amps), real power (kW), apparent power (kVA), mechanical horsepower (HP), breaker rating, and conductor size for 300 kW on a 48V DC Battery / Telecom Bus circuit.
Line Current (0.85 PF)6250.0 AAt 1.0 PF: 6250.0 A
Active / Apparent Power300.0 kW300.0 kVA · 0.0 kVAR
Recommended Breaker7900 A (NEC)6300 A (IEC Nominal)
Recommended Copper Wire12× 1000 kcmil (Parallel)IEC Metric: 11× 400 mm²
Engineering Breakdown for 300 kW at 48V
| Input Rating | 300 kW (48V DC Battery / Telecom Bus) |
| Amperage at 0.85 Power Factor (Industrial Motor/Transformer) | 6250.0 Amps |
| Amperage at 1.00 Power Factor (Resistive Load) | 6250.0 Amps |
| Real Power (kW / Watts) | 300.0 kW (300,000 W) |
| Apparent Power (kVA) & Reactive Power (kVAR) | 300.0 kVA / 0.0 kVAR |
| Equivalent Mechanical Horsepower (HP) | 402.31 HP |
| NEC 125% Continuous Circuit Breaker | 7900 A |
| Minimum Copper Conductor (100 ft / 30 m, ≤3% Drop) | 12× 1000 kcmil (Parallel) (NEC) / 11× 400 mm² (IEC) |
Frequently Asked Questions
How many amps is 300 kW at 48V (1-Phase)?
At 48V DC Battery / Telecom Bus, 300 kW equals 6250.0 Amps at an industrial power factor of 1.0 (or 6250.0 Amps at unity power factor 1.0).
What size breaker and wire is needed for 300 kW at 48V?
For 6250.0A continuous load, NEC requires a 125% rated breaker of 7900A with 12× 1000 kcmil (Parallel) copper conductors, while IEC standard sizing uses a 6300A breaker with 11× 400 mm² copper cable.
Other Power Ratings & Voltages
5 kW at 48V (1P)10 kW at 48V (1P)15 kW at 48V (1P)20 kW at 48V (1P)25 kW at 48V (1P)30 kW at 48V (1P)45 kW at 48V (1P)50 kW at 48V (1P)75 kW at 48V (1P)100 kW at 48V (1P)150 kW at 48V (1P)200 kW at 48V (1P)250 kW at 48V (1P)500 kW at 48V (1P)300 kW at 120V Single-Phase AC300 kW at 208V Single-Phase AC300 kW at 230V Single-Phase AC (IEC)300 kW at 240V Single-Phase AC (NEC)300 kW at 208V Three-Phase AC300 kW at 230V Three-Phase AC300 kW at 400V Three-Phase AC (IEC Europe)300 kW at 415V Three-Phase AC (UK / AU)300 kW at 480V Three-Phase AC (US Industrial)300 kW at 600V Three-Phase AC (Canada / Heavy)300 kW at 24V DC Direct Current