Motor Overload Setting Table PDF & Excel Download
If you need a quick and practical reference for overload relay settings, this Motor Overload Setting Table PDF is built for fast use in the field, panel workshops, and motor sizing jobs. It covers common 3-phase motor sizes, full load current (FLA), and recommended overload ranges based on standard industrial voltages.
Use the download links below to save the file for offline access.
Table of Contents
Table of Contents
Download the Motor Overload Setting Table
Get the latest motor overload reference table in both PDF and Excel formats.
| File Type | Download |
|---|---|
| Motor Overload Setting Table PDF | Download PDF |
| Motor Overload Setting Table Excel (XLS) | Download Excel |
These files are useful for:
- Motor control panel design
- MCC panel setup
- Overload relay selection
- Motor starter protection
- Maintenance troubleshooting
The Motor Overload Setting Table PDF is designed for electricians, engineers, and technicians who need quick current reference values.
What’s Included in This Table
The table includes important overload protection data for standard three-phase motors.
Data Included
| Parameter | Description |
|---|---|
| Motor Power (kW) | Standard motor output in kilowatts |
| Motor Power (HP) | Equivalent horsepower values |
| Voltage Rating | Common voltages like 400V, 415V, 440V |
| Full Load Current (FLA) | Running current under full load |
| Overload Setting Range | Recommended adjustable relay setting |
| Starter Type | DOL, Star Delta, Soft Starter |
This helps you confirm whether the downloaded file matches your application.
Find all about How to Set Thermal Overload Relay Setting
The overload setting values are based on typical motor efficiency and power factor values used in industrial installations. These values can be used as a quick starting point before final equipment verification.
3 Phase Motor Overload Setting Table Preview
Below is a preview of the overload relay setting chart for common motor sizes.
| Motor Size (kW) | Motor Size (HP) | Voltage (V) | Full Load Current (A) | Recommended Overload Setting (A) |
|---|---|---|---|---|
| 0.75 | 1 | 415 | 1.8 | 1.8 – 2.0 |
| 1.5 | 2 | 415 | 3.2 | 3.2 – 3.5 |
| 2.2 | 3 | 415 | 4.8 | 4.8 – 5.2 |
| 3.7 | 5 | 415 | 7.5 | 7.5 – 8.0 |
| 5.5 | 7.5 | 415 | 11 | 11 – 12 |
| 7.5 | 10 | 415 | 14.8 | 14.8 – 16 |
| 11 | 15 | 415 | 21 | 21 – 23 |
| 15 | 20 | 415 | 28 | 28 – 30 |
| 18.5 | 25 | 415 | 34 | 34 – 37 |
| 22 | 30 | 415 | 41 | 41 – 45 |
| 30 | 40 | 415 | 55 | 55 – 60 |
| 37 | 50 | 415 | 68 | 68 – 74 |
| 45 | 60 | 415 | 82 | 82 – 90 |
| 55 | 75 | 415 | 99 | 99 – 108 |
This 3 phase motor overload setting table gives a clear view of relay settings for low-voltage motors used in pumps, compressors, HVAC systems, conveyors, and industrial machines.
Know more about how to calculate overload relay for motor
Important Note
Always verify motor nameplate current before finalizing the overload setting. The table values are standard references and may vary with motor manufacturer.
How to Use This Table for Panel and Motor Design
Using the overload table correctly improves motor protection and panel reliability.
Step 1: Identify Motor Power
Check the motor rating in kW or HP from the nameplate.
Step 2: Match the Supply Voltage
Select the correct voltage column from the table. Most industrial systems use 415V for three-phase motors.
Step 3: Find Full Load Current
Locate the corresponding FLA. Use our Motor Current Calculator
Step 4: Set the Overload Relay
Adjust the relay within the recommended range.
Practical Example
| Motor Rating | Voltage | FLA | Relay Setting |
|---|---|---|---|
| 15 kW | 415V | 28A | 28A to 30A |
For motor control panels:
- Use overload settings at 100% to 115% of FLA
- For heavy starting loads, use thermal class 20 or 30
- For frequent start-stop motors, review duty cycle before setting
This method helps avoid nuisance tripping and protects winding insulation.
Know more about sizing motor overload protection
Related Tools and Guides
Use these related tools to improve motor protection calculations.
| Tool / Guide | Purpose |
|---|---|
| Motor Overload Setting Calculator | Calculate exact overload relay settings |
| Overload Relay Rating Chart | Quick relay size selection by motor size |
| How to Size Motor Overload Protection | Step-by-step protection sizing guide |
These resources work together with the Motor Overload Setting Table PDF for better motor circuit design.
Frequently Asked Questions
Is there a free PDF for motor overload setting tables?
Yes. You can download a free Motor Overload Setting Table PDF from this page for quick reference during motor installation and maintenance.
Can I download the motor overload setting table in Excel format?
Yes. The Excel file is available for editing, filtering, and custom motor calculations.
What does the motor overload setting table include?
It includes motor power ratings, voltage values, full load current, and overload relay adjustment ranges for common three-phase motors.
Is this table valid for all motor voltages?
No. The table mainly covers standard low-voltage motors like 400V, 415V, and 440V. Always verify the actual motor nameplate current for other voltages.
Follow Us on Social:
Subscribe our Newsletter on Electrical Insights for latest updates from Electrical Engineering Hub
