Schneider Electric LRD340 Thermal Overload Relay – 30–40A – TeSys Deca Series – Class 10 – Motor Protection Relay for LC1D40A/50A/65A Contactors

The Schneider Electric LRD340 is a 3-pole thermal overload relay from the TeSys Deca series, designed to provide reliable motor protection against overload, phase loss, and current imbalance. It is specifically built to mount directly onto LC1D-series contactors, forming a complete motor starter solution for industrial and commercial applications.

Electrical Ratings

• Current Setting Range: 30–40 A
• Phase: 3 Phase
• Poles: 3 Pole (thermal sensing elements)
• Protection Type: Thermal overload protection
• Trip Class: Class 10
• Application Type: Motor protection and overload control

Configuration and Function

• Device Type: Thermal Overload Relay
• Series: TeSys Deca
• Primary Function: Motor overload, phase failure, and imbalance protection
• Reset Function: Manual / Automatic reset selectable
• Test Function: Built-in test button for functional verification
• Trip Mechanism: Thermal bimetallic operation
• Indication: Mechanical trip status indicator

Compatibility

• Suitable For Use With:
  • LC1D40A contactors
  • LC1D50A contactors
  • LC1D65A contactors
• System Type: Motor starter assembly (contactor + overload relay)
• Installation: Direct mounting onto LC1D contactors

Mechanical and Physical Characteristics

• Mounting Type: Direct mount (LC1D compatible)
• Terminal Type: Screw terminals
• Compact modular TeSys Deca design
• High mechanical durability for industrial environments
• Designed for easy integration in control panels

Control and Safety Features

• Reset Modes: Manual or automatic selectable
• Built-in Test Function: Yes
• Trip Class: Class 10 for fast motor protection response
• Reliable protection against overload and phase failure
• Mechanical trip indication for status monitoring

Standards and Certifications

• IEC / EN compliant design
• UL / CSA certified (application dependent)
• Manufacturer: Schneider Electric
• Series: TeSys Deca
• RoHS compliant
• REACh compliant

Features

• Adjustable 30–40A thermal overload protection range
• Class 10 fast tripping for motor safety
• Designed for LC1D40A, LC1D50A, and LC1D65A contactors
• Provides overload, phase loss, and imbalance protection
• Direct mounting for compact motor starter assemblies
• Manual/automatic reset flexibility

Returns are easy

You may return items within 30 days of delivery for a refund.

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