Motor FLC or full load current or full load amperes (FLA) of a motor is the maximum current the motor windings are designed to carry. Here is a simple motor FLC calculator that can help you calculate the motor full load current.

## Motor data input

Motor Type | |

Enter the motor rated voltage | V |

Enter the motor rated power | |

Enter the motor Efficiency | 95% |

Enter the motor Power factor | 0.85 |

## Calculated Values | |

Motor FLC | A |

## How to use the motor FLC calculator:

The above tool requires following data for calculation:

- Motor Type – Single-phase or three-phase. (Mandatory)
- Motor rated power in HP or kW. (Mandatory)
- Input supply voltage. (Mandatory)
- Motor Efficiency as per nameplate – (if known).
- Rated power factor (if known).

After entering the required data, click on the “Calculate” button to find out the required fuse rating, Circuit Breaker rating, contactor current rating, and overload setting.

The appropriate selection of fuses, circuit breakers, overload relay, cables, and other switchgear is necessary to protect the motor from damages. The motor full load current forms the basis for the selection of all these equipment.

## Motor FLC calculation

### For single phase AC motors

For single-phase motors, when kW is known:

For single-phase motors, when HP is known:

### For Three phase AC motors

For three phase motors, when kW is known:

For three phase motors, when HP is known:

Where,

**Voltage:**The phase-to-phase voltage for a 3-phase supply.**Rating:**The power rating of the motor in kW.**Power factor (cosΦ)**: The rated power factor of the motor.**Efficiency (η)**: The efficiency of the motor.

## Approximate FLC of single-phase motors:

110V AC | 220V AC | 240V AC | ||

0.07 kW | 1/12 | 2.4 | 1.2 | 1.1 |

0.1 kW | 1/8 | 3.3 | 1.6 | 1.5 |

0.12 kW | 1/6 | 3.8 | 1.9 | 1.7 |

0.18 kW | 1/4 | 4.5 | 2.3 | 2.1 |

0.25 kW | 1/3 | 5.8 | 2.9 | 2.6 |

0.37 kW | 1/2 | 7.9 | 3.9 | 3.6 |

0.56 kW | 3/4 | 11 | 5.5 | 5 |

0.75 kW | 1 | 15 | 7.3 | 6.7 |

1.1 kW | 1.5 | 21 | 10 | 9 |

1.5 kW | 2 | 26 | 13 | 12 |

2.2 kW | 3 | 37 | 19 | 17 |

3 kW | 4 | 49 | 24 | 22 |

3.7 kW | 5 | 54 | 27 | 25 |

4 kW | 5.5 | 60 | 30 | 27 |

5.5 kW | 7.5 | 85 | 41 | 38 |

7.5 kW | 10 | 110 | 55 | 50 |

## Approximate FLC of Three-phase motors:

kW | HP | 220V AC | 240V AC | 380V AC | 415V AC | 550V AC | 660V AC | 690V AC |

0.1 | 1/8 | 0.32 | 0.30 | 0.19 | 0.17 | 0.13 | 0.11 | 0.10 |

0.18 | ¼ | 0.58 | 0.53 | 0.34 | 0.31 | 0.23 | 0.19 | 0.19 |

0.25 | 1/3 | 0.81 | 0.74 | 0.47 | 0.43 | 0.32 | 0.27 | 0.26 |

0.37 | ½ | 1.19 | 1.10 | 0.69 | 0.63 | 0.48 | 0.40 | 0.38 |

0.56 | ¾ | 1.81 | 1.66 | 1.05 | 0.96 | 0.72 | 0.60 | 0.58 |

0.75 | 1 | 2.42 | 2.22 | 1.40 | 1.28 | 0.97 | 0.81 | 0.77 |

1.1 | 1.40 | 3.55 | 3.26 | 2.06 | 1.88 | 1.42 | 1.18 | 1.13 |

1.5 | 2 | 5 | 4 | 3 | 3 | 2 | 2 | 2 |

2.2 | 3 | 7 | 7 | 4 | 4 | 3 | 2 | 2 |

3 | 4 | 10 | 9 | 6 | 5 | 4 | 3 | 3 |

3.7 | 5 | 12 | 11 | 7 | 6 | 5 | 4 | 4 |

4 | 5 | 13 | 12 | 7 | 7 | 5 | 4 | 4 |

5.5 | 7 | 18 | 16 | 10 | 9 | 7 | 6 | 6 |

7.5 | 10 | 24 | 22 | 14 | 13 | 10 | 8 | 8 |

9.3 | 12 | 30 | 28 | 17 | 16 | 12 | 10 | 10 |

10 | 13 | 32 | 30 | 19 | 17 | 13 | 11 | 10 |

11 | 14 | 36 | 33 | 21 | 19 | 14 | 12 | 11 |

15 | 19 | 48 | 44 | 28 | 26 | 19 | 16 | 15 |

18 | 23 | 58 | 53 | 34 | 31 | 23 | 19 | 19 |

22 | 28 | 71 | 65 | 41 | 38 | 28 | 24 | 23 |

30 | 38 | 97 | 89 | 56 | 51 | 39 | 32 | 31 |

37 | 47 | 119 | 110 | 69 | 63 | 48 | 40 | 38 |

45 | 57 | 145 | 133 | 84 | 77 | 58 | 48 | 46 |

55 | 70 | 178 | 163 | 103 | 94 | 71 | 59 | 57 |

75 | 95 | 242 | 222 | 140 | 128 | 97 | 81 | 77 |

90 | 115 | 291 | 266 | 168 | 154 | 116 | 97 | 93 |

110 | 140 | 355 | 326 | 206 | 188 | 142 | 118 | 113 |

130 | 165 | 420 | 385 | 243 | 223 | 168 | 140 | 134 |

150 | 191 | 484 | 444 | 280 | 257 | 183 | 161 | 154 |

**All the values above are approximated. The actual current may vary depending on the voltage, power factor, and motor efficiency.**

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