DESCRIZIONE PRODOTTO
SCHNEIDER ELECTRIC LR3D22 - Thermal Overload Relay
This device is a TeSys LR3D series bimetallic thermal overload relay designed for the protection of AC circuits and motors against overloads and phase failure. It integrates directly with TeSys D contactors, providing reliable electromechanical protection in industrial motor control applications such as pumping systems, conveyors, and HVAC units. The relay ensures operational continuity by tripping the control circuit upon detection of excessive current draw.
Technical Specifications:
- SERIES/FAMILY: TeSys LR3D
- COMPONENT TYPE: Thermal Overload Relay
- ELECTRICAL SPECS:
- CURRENT ADJUSTMENT RANGE: 17-22 A
- RATED OPERATIONAL VOLTAGE (Ue): Up to 690 VAC
- RATED INSULATION VOLTAGE (Ui): 690 VAC
- RATED IMPULSE WITHSTAND VOLTAGE (Uimp): 6 kV
- FREQUENCY: 50/60 Hz
- PHASE: 3-Phase
- MECHANICAL/PHYSICAL:
- TRIP CLASS: Class 10A
- RESET FUNCTION: Manual/Automatic selectable
- INTERFACE/CONTROL:
- AUXILIARY CONTACTS: 1 NO + 1 NC
- CONTROL CIRCUIT RATING: 5A at 240VAC (AC-15), 0.5A at 125VDC (DC-13)
- ENVIRONMENTAL/MOUNTING:
- IP RATING: IP20 (terminals), IP20 (casing)
- OPERATING TEMPERATURE: -20 to 60 °C
- COOLING METHOD: Natural convection
- MOUNTING STYLE: Direct mounting under TeSys D contactors (LC1D09-D38), or standalone with optional terminal block
- COMPATIBILITY/APPLICATION:
- COMPATIBLE CONTACTORS: SCHNEIDER ELECTRIC TeSys D series (LC1D09 to LC1D38)
- APPLICATION: Overload and phase failure protection for AC motors in industrial control panels, motor control centers, and machinery.