Product Description
Schneider Electric LRD21 TeSys Deca Thermal Overload Relay
The Schneider Electric LRD21 is a TeSys Deca (TeSys D) thermal overload relay designed to protect three-phase motors from overload conditions and phase loss. With an adjustable trip range of 12A to 18A, the LRD21 mounts directly to compatible TeSys D contactors to create a compact, reliable motor starter solution for industrial automation, HVAC equipment, pumps, and conveyor systems.
Quick Specifications
- Adjustable Current Range: 12A – 18A
- Trip Class: Class 10
- Protection Type: Thermal overload + phase loss sensitivity
- Reset: Manual / Automatic (selectable)
- Auxiliary Contacts: 1 N.O. / 1 N.C. (Built-in)
- Mounting: Direct mount to TeSys D contactors
Adjustment Range
| Setting | Details |
|---|---|
| Current Range | 12A – 18A (set to motor nameplate FLA) |
| Trip Behavior | Class 10 response for common motor-starting applications |
| Phase Loss Sensitivity | Helps protect motors from single-phasing conditions |
Product Features
- Direct TeSys Integration: Mounts directly to TeSys D contactors to form a compact motor starter assembly.
- Accurate Motor Protection: Adjustable dial helps match the relay to motor full-load amps (FLA) for dependable overload protection.
- Phase Loss Protection: Sensitive to phase loss to reduce the risk of motor overheating and premature failure.
- Service-Friendly Design: Trip indication and front-access reset simplify troubleshooting and maintenance.
- Control Circuit Signaling: Built-in 1NO/1NC auxiliary contacts support interlocks, status, or PLC input feedback.
Stock Item – Order before 4:00 PM EST for Same-Day Shipping.
