Square D TeSys Deca Thermal Overload Relay
The Square D LR3D07 is a TeSys Deca non-differential thermal overload relay engineered to protect 1 HP motors. With a 1.6 to 2.5A thermal range and Class 10A tripping, this relay is designed for use with unbalanced loads and pairs with TeSys Deca contactors for complete motor starter assemblies.
Key Features
- Thermal range: 1.6 to 2.5A for 1 HP motor protection
- Class 10A tripping
- Non-differential thermal overload relay type — suitable for unbalanced loads
- Control circuit screw clamp terminals
- Compatible with TeSys Deca contactors
Standards & Certifications
- EN/IEC 60947-4-1
- EN/IEC 60947-5-1
- UL 60947-4-1
- UL 60947-5-1
- CSA C22.2 No 60947-4-1
- CSA C22.2 No 60947-5-1
- GB/T 14048.4 / GB/T 14048.5
- EN 50495
Specifications
- Manufacturer: Square D (Schneider Electric)
- Model: LR3D07
- UPC: 78590120684
- Type: Non-Differential Thermal Overload Relay
- Thermal Range: 1.6 to 2.5A
- Tripping Class: 10A
- Motor Rating: 1 HP
- Connection Type: Control Circuit Screw Clamp Terminals
Applications
Designed for motor starter assemblies protecting 1 HP motors in industrial control panels, conveyors, pumps, and general machinery where the relay may encounter unbalanced load conditions.




