3 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 3 kW on a 48V DC Battery / Telecom Bus circuit.
Line Current (0.85 PF)62.5 AAt 1.0 PF: 62.5 A
Active / Apparent Power3.0 kW3.0 kVA · 0.0 kVAR
Recommended Breaker80 A (NEC)63 A (IEC Nominal)
Recommended Copper Wire6 AWGIEC Metric: 16 mm²
Engineering Breakdown for 3 kW at 48V
| Input Rating | 3 kW (48V DC Battery / Telecom Bus) |
| Amperage at 0.85 Power Factor (Industrial Motor/Transformer) | 62.5 Amps |
| Amperage at 1.00 Power Factor (Resistive Load) | 62.5 Amps |
| Real Power (kW / Watts) | 3.0 kW (3,000 W) |
| Apparent Power (kVA) & Reactive Power (kVAR) | 3.0 kVA / 0.0 kVAR |
| Equivalent Mechanical Horsepower (HP) | 4.02 HP |
| NEC 125% Continuous Circuit Breaker | 80 A |
| Minimum Copper Conductor (100 ft / 30 m, ≤3% Drop) | 6 AWG (NEC) / 16 mm² (IEC) |
Frequently Asked Questions
How many amps is 3 kW at 48V (1-Phase)?
At 48V DC Battery / Telecom Bus, 3 kW equals 62.5 Amps at an industrial power factor of 1.0 (or 62.5 Amps at unity power factor 1.0).
What size breaker and wire is needed for 3 kW at 48V?
For 62.5A continuous load, NEC requires a 125% rated breaker of 80A with 6 AWG copper conductors, while IEC standard sizing uses a 63A breaker with 16 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)3 kW at 120V Single-Phase AC3 kW at 208V Single-Phase AC3 kW at 230V Single-Phase AC (IEC)3 kW at 240V Single-Phase AC (NEC)3 kW at 208V Three-Phase AC3 kW at 230V Three-Phase AC3 kW at 400V Three-Phase AC (IEC Europe)3 kW at 415V Three-Phase AC (UK / AU)3 kW at 480V Three-Phase AC (US Industrial)3 kW at 600V Three-Phase AC (Canada / Heavy)3 kW at 24V DC Direct Current