Schneider TeSys LRD Series Thermal Overload Relays

Schneider TeSys LRD Series Thermal Overload Relays Suppliers, Exporters in India

Schneider TeSys LRD Series Thermal Overload Relays are designed to protect three-phase AC motors against overload, phase failure, and load imbalance. Commonly used with Schneider TeSys Deca contactors, these relays provide dependable motor protection for industrial machinery, motor control centres, and electrical distribution panels.

The TeSys LRD Series uses thermal overload protection to help prevent motor damage caused by excessive current over extended periods. Each relay features an adjustable current setting, allowing it to be matched to the motor’s rated current for reliable protection. The built-in differential mechanism also detects phase loss and load imbalance, reducing the risk of motor overheating and premature failure.

The relays are simple to install and maintain. Front-mounted controls allow easy adjustment of the thermal setting, while manual or automatic reset options, test and stop buttons, and a mechanical trip indicator make operation straightforward. A transparent protective cover helps prevent accidental changes to the relay settings during normal operation.

Models Covered

The TeSys LRD Series includes a wide range of thermal overload relays, including:

• LRD01
• LRD02
• LRD03
• LRD04
• LRD05
• LRD06
• LRD07
• LRD08
• LRD10
• LRD12
• LRD14
• LRD16
• LRD21
• LRD22
• LRD32
• LRD35

Higher current models include:

• LRD3361
• LRD3363
• LRD3365
• LRD4363
• LRD4365

Additional LRD models are available with different current setting ranges.

Specifications

• Product Name: Schneider TeSys LRD Series Thermal Overload Relays
• Product Family: TeSys
• Relay Type: Thermal Overload Relay
• Application: Three-Phase AC Motor Protection
• Rated Operational Voltage: Up to 690 V AC
• Current Setting Range: Model dependent
• Trip Class: Class 10A
• Protection Functions: Overload, Phase Failure and Load Imbalance Protection
• Reset Mode: Manual or Automatic Selectable
• Auxiliary Contacts: 1 NO + 1 NC (model dependent)
• Trip Indication: Mechanical Trip Indicator
• Test Function: Manual Test Button
• Connection: Screw Clamp Terminals
• Mounting: Direct Mounting on TeSys Contactors or DIN Rail/Screw Mounting
• Compatible Contactors: Schneider TeSys Deca LC1D Series
• Standards: IEC, UL, CSA, CCC, EAC, ATEX, Marine, RoHS and REACH compliant (model dependent)

Features

• Thermal overload protection for three-phase motors
• Detects phase failure and load imbalance
• Adjustable motor current setting
• Class 10A tripping characteristic
• Manual or automatic reset selection
• Front-mounted test and stop buttons
• Mechanical trip indication
• Transparent cover to protect settings
• 1 NO and 1 NC auxiliary contacts
• Compatible with TeSys Deca contactors
• DIN rail and panel mounting options
• Reliable protection for industrial motor circuits

Applications

• Motor control centres (MCC)
• Industrial automation systems
• Pumps
• Compressors
• Fans and blowers
• Conveyor systems
• Packaging machinery
• HVAC equipment
• Water and wastewater treatment plants
• Textile machinery
• Mining operations
• Cement and steel plants
• OEM control panels
• Manufacturing facilities