How Many Amps Is 0.5 kW at 575V?

At 575V, 0.5 kW pulls approximately 0.5906 amps on AC three-phase (PF 0.85). This is the case typical for commercial HVAC, industrial motors, rooftop units, and three-phase panel loads. Always verify against the equipment nameplate for actual install sizing.

0.5 kW at 575V, AC three-phase (PF 0.85)

0.5906 Amps

0.5 kilowatts at 575V on AC three-phase ≈ 0.5906 amps

AC Single Phase (PF 0.85)1.02 A

DC (ideal baseline)0.8696 A

Try: 0.75kW at 575V 1kW at 575V 1.5kW at 575V 2kW at 575V

Volts

Amps (AC three-phase, PF 0.85)

0.5906

Formulas

DC: kW to Amps

I_(A) = 1000 × P_(kW) ÷ V_(V)

1000 × 0.5 ÷ 575 = 500 ÷ 575 = 0.8696 A

AC Single Phase (PF = 0.85)

I_(A) = 1000 × P_(kW) ÷ (PF × V_(V))

500 ÷ (0.85 × 575) = 500 ÷ 488.75 = 1.02 A

AC Three Phase (PF = 0.85)

I_(A) = 1000 × P_(kW) ÷ (√3 × PF × V_L-L), where V_L-L is the line-to-line voltage

500 ÷ (1.732 × 0.85 × 575) = 500 ÷ 846.52 = 0.5906 A

Equipment & Circuit Sizing

Breaker Sizing

Breaker ratings are in amps, not watts, so the real install answer depends on the equipment nameplate FLA, whether the load is continuous (NEC 210.19(A) sizes the conductor and OCP at 125% of a continuous load, equivalently 80% of breaker rating), conductor ampacity and temperature rating, ambient and bundling derates, and any motor or HVAC provisions (NEC 430 / 440). At roughly 0.5906A on AC three-phase at 575V, the load sits in the bracket between a 15A standard size (non-continuous) and the next size up that covers a continuous load under 210.19(A). The actual install pick depends on whether the load is continuous and the factors above; a conversion page can't pick a single "right" breaker from the amp draw alone.

Energy Cost

0.5 kW costs $0.09/hour at $0.17/kWh (rates last reviewed April 2026). See breakdown.

Power Factor Reference (AC three-phase)

How the line current for 0.5 kW at 575V changes with load power factor, on the same AC three-phase circuit basis the rest of the page uses. DC has no power factor; PF 1.0 represents resistive AC loads.

Load Type	PF	0.5 kW at 575V (AC three-phase)
Resistive (heaters, incandescent)	1	0.502 A
Fluorescent lamps	0.95	0.5285 A
LED lighting	0.9	0.5578 A
Synchronous motors	0.9	0.5578 A
Typical mixed loads	0.85	0.5906 A
Induction motors (full load)	0.8	0.6276 A
Computers (without PFC)	0.65	0.7724 A
Induction motors (no load)	0.35	1.43 A

AC Conversion Comparison

On DC, 0.5kW at 575V draws 0.8696A. AC single-phase at PF 0.85 pulls 1.02A because reactive current is added on top of the real power. Three-phase at the same voltage needs only 0.5906A per line since the same 0.5kW is shared across three conductors instead of one.

Circuit Type	Formula	Result
DC	500 ÷ 575	0.8696 A
AC Single Phase (PF 0.85)	500 ÷ (0.85 × 575)	1.02 A
AC Three Phase (PF 0.85)	500 ÷ (1.732 × 0.85 × 575)	0.5906 A

Other kW Values at 575V

kW	AC 3-Phase per line, PF 0.85	AC 1-Phase PF 0.85
0.5 kW	0.5906 A	1.02 A
0.75 kW	0.886 A	1.53 A
1 kW	1.18 A	2.05 A
1.5 kW	1.77 A	3.07 A
2 kW	2.36 A	4.09 A
2.5 kW	2.95 A	5.12 A
3 kW	3.54 A	6.14 A
3.5 kW	4.13 A	7.16 A
4 kW	4.73 A	8.18 A
5 kW	5.91 A	10.23 A
6 kW	7.09 A	12.28 A
7.5 kW	8.86 A	15.35 A
8 kW	9.45 A	16.37 A
10 kW	11.81 A	20.46 A
12 kW	14.18 A	24.55 A

Same kW, Other Voltages

Each destination page leads with the interpretation most common for that voltage, so the amps shown below use the same basis as the page you'd land on: single-phase for residential voltages, three-phase for commercial/industrial panel voltages, DC for low-voltage.

Related Calculations

bolt 500W to amps at 575V payments 500W running cost cable Wire size for 0.5906A at 575V (3Φ)

Frequently Asked Questions

How many amps is 0.5 kW at 575V?expand_more

0.5 kW at 575V draws about 0.5906 amps on an AC three-phase circuit at PF 0.85. Alternate cases at the same voltage: 0.8696A on DC, 1.02A on AC single-phase.

Is 0.5 kW single-phase or three-phase?expand_more

0.5 kW can be either. Residential loads up to about 5 kW (water heaters, dryers, EV chargers at 240V) are usually single-phase; commercial panels often serve the same load three-phase at 208V or 480V.

What is the formula for kW to amps?expand_more

DC: Amps = (kW × 1000) ÷ Volts. AC single-phase: Amps = (kW × 1000) ÷ (Volts × PF). AC three-phase: Amps = (kW × 1000) ÷ (Volts_L-L × √3 × PF).

How many amps does a 0.5 kW EV charger draw at 575V?expand_more

575V is commercial/industrial panel voltage, not a typical AC EVSE feed to a vehicle. On three-phase 575V, 0.5 kW works out to about 0.5906A per line (three-phase at PF 0.85). In practice, 400-480V three-phase is usually the AC input to a DC fast charger (50-350 kW CCS/NACS stations like Tesla Superchargers), which rectifies to DC and delivers that directly to the vehicle, rather than an AC EVSE connector. A 0.5 kW figure at 575V is most likely the AC feed to a smaller commercial cabinet or the control-side input of a larger DC fast charger, not an at-the-car AC current.

How does three-phase affect the amps for 0.5 kW?expand_more

Three-phase at 575V draws 0.5906A per line versus 1.02A single-phase. Less current per conductor means smaller wire and lower I²R losses.

This calculator provides estimates for reference purposes only. Always consult a licensed electrician and verify compliance with the National Electrical Code (NEC) and local electrical codes before performing any electrical work.