Square D LRD-332 TeSys Deca Thermal Overload Relay, Class 10A EverLink

Square D LRD-332 TeSys Deca Thermal Overload Relay, Class 10A EverLink

The Square D TeSys Deca Thermal Overload Relay (device short name LRD) is a differential thermal overload relay built for TeSys D contactors, pairing with sizes such as LC1D50A and LC1D65A. This family is available across Motor FLA ratings from 32A to 65A, so the correct relay can be matched to the motor starter combination on hand. Rated Class 10A per IEC 60947-4-1 with a 690V AC operational voltage rating, every relay in the line uses EverLink BTR power connectors and detects over-current on the motor lines to guard against overload and phase-failure faults.

Key Features

• Motor FLA Range: Available in ratings from 32A to 65A to match TeSys D contactor sizing needs.
• Thermal Overload Protection: Class 10A tripping curve per IEC 60947-4-1, threshold 1.14 +/- 0.06 Ir.
• EverLink Connectors: Power circuit uses EverLink BTR screw connectors torqued to 5 N.m; control circuit terminals torqued to 1.7 N.m.
• Rated Operational Voltage: 690V AC (0...400 Hz) power circuit per IEC 60947-4-1.
• Control Type: Blue push-button reset, red push-button stop.
• Degree of Protection: IP20 per IEC 60529.
• Ambient Operating Range: -20 to 60 °C without derating per IEC 60947-4-1.
• Mechanical Robustness: 15 Gn/11 ms shock (IEC 60068-2-7); 4 gn vibration (IEC 60068-2-6).

Certifications & Compliance

• UL Listed (UL 60947-4-1, UL 60947-5-1)
• CSA Certified (C22.2 No 60947-4-1, No 60947-5-1)
• IEC/EN 60947-4-1
• UKCA
• ATEX INERIS
• DNV-GL
• Lloyds Register of Shipping (LROS)
• RMRS
• CCC
• EAC

Technical Specifications

• Listing: UL
• Device Short Name: LRD
• Phase Failure Sensitivity: tripping current 130 % of Ir on two phase, the last one at 0
• Toxic Heavy Metal Free: Yes
• Mercury Free: Yes
• ROHS Eur In Scope: Yes
• Warranty: 18 months

Typical Applications

• Motor Starter Combinations with TeSys D Contactors
• Industrial and Commercial Motor Control Panels
• OEM and Panel Builder Assemblies
• Overload and Phase-Failure Motor Protection
• Contractor and Electrician Installations

Why Square D?

Square D builds the TeSys Deca line to IEC and UL standards with EverLink connectors for a dependable power connection, backed by broad international certification (UL, CSA, IEC, UKCA, ATEX, DNV-GL) for code-compliant motor control performance across the full 32A to 65A Motor FLA range.