Schneider · TeSys LRDOfficial source
LRD32
LRD32
Setting 23–32 A · Class 10A
- Adjustment range covers the reference current
Verified 2026-11-05
COMPONENTS / PARAMETER SIZING
Thermal Overload Relay Selection
Find adjustment ranges that cover motor nameplate current.
Input Parameters
Edit the example values. Results update as you type.
Enter the nameplate current for the actual supply voltage and connection.
Can be imported from the motor-current calculator to screen setting ranges.
Results
- Setting Range Based on Estimated Current
- 23–32A
- Estimated Current
- 29.8A
- Suggested Setting
- Verify Nameplate First
Currently screened by reference current. Enter actual nameplate current to view the suggested setting.
Formula
Iₘᵢₙ ≤ I_nameplate ≤ IₘₐₓSubstitution
23 ≤ 29.8 ≤ 32 ACalculation Steps
- Screen ranges containing the reference current, prioritizing those with the current closest to the range center.
- Use the actual nameplate current as the setting reference, then verify trip class, installation position and ambient temperature.
Result Explanation
The range must cover motor rated current to permit nameplate-based setting. Listed ranges are common product examples.
Product Candidates
Parameter-matched candidatesFormulas and FAQ
Iₘᵢₙ ≤ I_nameplate ≤ IₘₐₓWhy must the range cover nameplate current?
This allows protection to be set to the nameplate current for the connection. For star–delta, also verify the relay location.