1. Introduction

The Schneider LRD3361 is a thermal overload relay from the TeSys LRD series, designed to provide protection against overloads and phase failure in electrical motor circuits. With an adjustable current range of 55-70A and Class 10A tripping characteristics, this relay ensures reliable motor protection and optimal system performance. It is typically used in combination with TeSys LC1D contactors for seamless integration into motor control panels.

2. Key Features

• Adjustable Current Range: 55-70A
• Tripping Class: 10A
• Reset Options: Manual and automatic reset
• Phase Failure Protection: Helps prevent damage due to phase loss
• Mounting Compatibility: Directly mounts on TeSys LC1D contactors
• Auxiliary Contacts: 1 normally open (NO) + 1 normally closed (NC)
• Compact and Durable: Designed for industrial environments

3. Technical Specifications

• Product Type: Thermal Overload Relay
• Series: TeSys LRD
• Current Adjustment Range: 55-70A
• Tripping Class: 10A
• Reset Mode: Manual/Automatic
• Phase Failure Protection: Yes
• Number of Auxiliary Contacts: 1 NO + 1 NC
• Mounting Type: Direct attachment to LC1D contactors
• Compliance: IEC 60947-4-1

4. Applications

• Motor overload protection
• Industrial automation systems
• Pumps, fans, compressors, conveyors
• HVAC systems
• Power distribution panels

5. Benefits

• Reliable Motor Protection: Prevents overheating and damage
• Easy Integration: Mounts directly onto LC1D contactors
• Versatile Reset Options: Adaptable to different control requirements
• Compact Design: Saves space in control panels
• Energy-Efficient: Reduces downtime and maintenance costs

6. Conclusion

The Schneider LRD3361 is a high-performance thermal overload relay that ensures efficient and reliable motor protection in industrial and commercial applications. With its adjustable 55-70A range, Class 10A tripping characteristics, and built-in phase failure protection, it is an ideal choice for preventing motor damage and enhancing system safety