OPIS PRODUKTU
SCHNEIDER ELECTRIC LRD12 - Thermal Overload Relay
This device is a TeSys LRD thermal overload relay, engineered for robust protection of three-phase AC motors and circuits against overloads, phase loss, and prolonged starting conditions. It integrates seamlessly with TeSys D contactors, providing reliable electromechanical thermal protection essential for industrial motor control centers, HVAC systems, and general machinery applications. Its bimetallic strip mechanism ensures precise current monitoring and trip functionality.
Technical Specifications:
- SERIES/FAMILY: TeSys LRD
- COMPONENT TYPE: Thermal Overload Relay
- ELECTRICAL SPECS:
- CURRENT ADJUSTMENT RANGE: 5.5 - 8 A
- RATED OPERATIONAL VOLTAGE (Ue): Up to 690 VAC (main circuit)
- RATED INSULATION VOLTAGE (Ui): 690 V (conforming to IEC 60947-4-1)
- RATED IMPULSE WITHSTAND VOLTAGE (Uimp): 6 kV
- THERMAL PROTECTION CLASS: Class 10A (conforming to IEC 60947-4-1)
- NUMBER OF POLES: 3P
- MECHANICAL/PHYSICAL:
- MOUNTING TYPE: Direct mounting under contactor or standalone with terminal block
- RESET TYPE: Manual or Automatic
- TRIP INDICATION: Yes
- INTERFACE/CONTROL:
- AUXILIARY CONTACTS: 1 NO + 1 NC
- CONTROL CIRCUIT RATED OPERATIONAL CURRENT (Ie): 1.5 A at 240 VAC (AC-15), 0.1 A at 250 VDC (DC-13)
- ENVIRONMENTAL/MOUNTING:
- IP RATING: IP20 (terminals, conforming to IEC 60529)
- AMBIENT AIR TEMPERATURE FOR OPERATION: -20 to 60 °C
- AMBIENT AIR TEMPERATURE FOR STORAGE: -60 to 70 °C
- COOLING METHOD: Natural convection
- COMPATIBILITY/APPLICATION:
- COMPATIBLE CONTACTORS: TeSys D contactors (e.g., LC1D09, LC1D12, LC1D18, LC1D25, LC1D32, LC1D38)
- PRIMARY APPLICATION: Overload and phase failure protection for three-phase AC motors in industrial machinery, pumping, ventilation, and conveyor systems.
