45 kVA 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 45 kVA on a 48V DC Battery / Telecom Bus circuit.
Line Current (0.85 PF)937.5 AAt 1.0 PF: 937.5 A
Active / Apparent Power45.0 kW45.0 kVA · 0.0 kVAR
Recommended Breaker1200 A (NEC)1000 A (IEC Nominal)
Recommended Copper Wire2× 1000 kcmil (Parallel)IEC Metric: 2× 400 mm²
Engineering Breakdown for 45 kVA at 48V
| Input Rating | 45 kVA (48V DC Battery / Telecom Bus) |
| Amperage at 0.85 Power Factor (Industrial Motor/Transformer) | 937.5 Amps |
| Amperage at 1.00 Power Factor (Resistive Load) | 937.5 Amps |
| Real Power (kW / Watts) | 45.0 kW (45,000 W) |
| Apparent Power (kVA) & Reactive Power (kVAR) | 45.0 kVA / 0.0 kVAR |
| Equivalent Mechanical Horsepower (HP) | 60.35 HP |
| NEC 125% Continuous Circuit Breaker | 1200 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 45 kVA at 48V (1-Phase)?
At 48V DC Battery / Telecom Bus, 45 kVA equals 937.5 Amps at an industrial power factor of 1.0 (or 937.5 Amps at unity power factor 1.0).
What size breaker and wire is needed for 45 kVA at 48V?
For 937.5A continuous load, NEC requires a 125% rated breaker of 1200A with 2× 1000 kcmil (Parallel) copper conductors, while IEC standard sizing uses a 1000A breaker with 2× 400 mm² copper cable.
Other Power Ratings & Voltages
5 kVA at 48V (1P)10 kVA at 48V (1P)15 kVA at 48V (1P)20 kVA at 48V (1P)25 kVA at 48V (1P)30 kVA at 48V (1P)50 kVA at 48V (1P)75 kVA at 48V (1P)100 kVA at 48V (1P)150 kVA at 48V (1P)200 kVA at 48V (1P)250 kVA at 48V (1P)500 kVA at 48V (1P)45 kVA at 120V Single-Phase AC45 kVA at 208V Single-Phase AC45 kVA at 230V Single-Phase AC (IEC)45 kVA at 240V Single-Phase AC (NEC)45 kVA at 208V Three-Phase AC45 kVA at 230V Three-Phase AC45 kVA at 400V Three-Phase AC (IEC Europe)45 kVA at 415V Three-Phase AC (UK / AU)45 kVA at 480V Three-Phase AC (US Industrial)45 kVA at 600V Three-Phase AC (Canada / Heavy)45 kVA at 24V DC Direct Current