TeSys Deca | Schneider | LRD08 TeSys 034678 Thermal Overload 2.5-4A NO NC Aux Contact

Product Description: Schneider Electric LRD08

The Schneider Electric LRD08 is a thermal overload relay designed for the protection of three-phase motors against overloads, phase loss, and unbalanced currents. It is part of the TeSys Deca series and typically used in conjunction with TeSys D contactors, offering reliable and adjustable protection in industrial motor control applications.

Key Features

• Adjustable thermal protection range: 2.5 to 4 A
• Tripping class: Class 10A according to IEC 60947-4-1
• Manual or automatic reset modes
• Built-in phase failure sensitivity
• Auxiliary contacts: 1 Normally Open (NO) + 1 Normally Closed (NC)
• Reset and stop push-buttons for local control
• Mounting: Direct on contactor or DIN rail with adapter

Technical Specifications

• Rated operational voltage: up to 690 V AC
• Rated insulation voltage: 690 V
• Rated impulse withstand voltage: 6 kV
• Frequency range: 0 to 400 Hz
• Conventional free air thermal current: 5 A (auxiliary contacts)
• Operating temperature: -20°C to +60°C (with compensation)
• Tripping current threshold: 1.14 ± 0.06 × Ir
• Control circuit terminals: screw clamp for 1 to 2.5 mm² cables
• Power circuit terminals: screw clamp for 1.5 to 10 mm² cables
• Tightening torque: 1.7 N·m
• Approximate dimensions (W × D): 45 mm × 70 mm
• Approximate weight: 0.124 kg

Application Areas

• Motor control panels
• Pumps and compressors
• Conveyors and mechanical drives
• HVAC and ventilation systems
• General-purpose industrial machines

Advantages

• Reliable and fast motor overload protection
• Compact and modular design
• Quick and easy installation
• Compliant with international standards
• Integrated manual/auto reset and test functionalities