Description

Schneider LRD340 | TeSys LRD thermal overload relays – 30…40 A – class 10A



Schneider LRD340: Comprehensive Overview

it is a thermal overload relay designed to protect electric motors from overheating and overloading. As part of Schneider Electric’s TeSys range, this relay offers precision, reliability, and robust protection, making it an essential component in motor control and protection systems.

Key Features

1. Current Adjustment Range:
   • Adjustable between 37 to 50A, providing flexibility for various motor ratings.
2. Trip Class:
   • Designed with Class 10A for rapid response to overload conditions.
3. Integrated Protection:
   • Protects motors against phase imbalance, phase loss, and overload, enhancing system reliability.
4. Manual and Automatic Reset Options:
   • Offers selectable manual or automatic reset functionality for convenience.
5. Compact and Modular Design:
   • Seamlessly integrates with TeSys D contactors for a streamlined motor control setup.
6. Test and Stop Functions:
   • Includes built-in test and stop buttons for ease of testing and maintenance.

Applications

The LRD340 is ideal for a variety of motor protection applications, such as:

• Industrial Motors:
  Safeguards motors in manufacturing, conveyor systems, and processing equipment.
• Pumps and Fans:
  Ensures reliable operation in HVAC and water management systems.
• Automation Systems:
  A key component in automated setups requiring precise motor control and protection.

Benefits

1. Enhanced Motor Protection:
   Detects and mitigates overloads, reducing downtime and preventing motor damage.
2. Versatility:
   Wide current adjustment range accommodates multiple motor sizes.
3. Easy Integration:
   Compatible with TeSys contactors, simplifying installation and system design.
4. Energy Efficiency:
   Optimizes motor performance by reducing unnecessary tripping.

Technical Specifications

Installation and Maintenance

• Installation:
  Mounts directly onto TeSys D contactors or can be panel-mounted for standalone use.
• Wiring:
  Features clearly labeled terminals for error-free connections.
• Testing:
  Regularly test using the built-in test button to ensure optimal performance.