Square D TeSys Deca Thermal Overload Relay
The Square D LRD123 is a TeSys Deca differential thermal overload relay designed for motor protection in industrial control applications. With a 5.5 to 8A thermal range and Class 10A tripping, this relay provides reliable overload protection when used with a TeSys Deca contactor.
Key Features
- Thermal range: 5.5 to 8A
- Class 10A tripping for standard motor protection
- Differential thermal overload relay type
- Control circuit spring terminals for tool-free wiring
- Phase unbalance protection
- 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: LRD123
- UPC: 78590121798
- Type: Differential Thermal Overload Relay
- Thermal Range: 5.5 to 8A
- Tripping Class: 10A
- Connection Type: Control Circuit Spring Terminals
Applications
Designed for motor protection in industrial control panels, machine control, and process automation applications. Pairs with TeSys Deca contactors for complete motor starter assemblies.






