PRODUCT DESCRIPTION
SCHNEIDER ELECTRIC LR3D126 - Thermal Overload Relay
This device is a TeSys LR3D series thermal overload relay designed for the protection of AC motors against overloads, phase failure, and prolonged starting times. It integrates directly with TeSys D contactors, providing reliable thermal protection in industrial control panels and motor control centers. The relay utilizes bimetallic strips for thermal sensing, ensuring precise and repeatable tripping characteristics for critical machinery.
Technical Specifications:
- SERIES/FAMILY: TeSys LR3D
- COMPONENT TYPE: Thermal Overload Relay
- ELECTRICAL SPECS:
- CURRENT ADJUSTMENT RANGE: 17-25 A
- THERMAL PROTECTION CLASS: Class 10
- RATED OPERATIONAL VOLTAGE: Up to 690 VAC
- RATED INSULATION VOLTAGE: 690 V (IEC 60947-4-1), 1000 V (UL/CSA)
- AUXILIARY CONTACTS: 1 NO + 1 NC
- PHASE: Three-phase
- MECHANICAL/PHYSICAL:
- RESET TYPE: Manual/Automatic
- MOUNTING: Direct under TeSys D contactor or standalone with adapter
- FORM FACTOR: Block type
- INTERFACE/CONTROL:
- CONTROL CIRCUIT VOLTAGE (AUXILIARY): 24-600 V AC/DC
- ENVIRONMENTAL/MOUNTING:
- IP RATING: IP20 (terminals), IP20 (casing)
- AMBIENT AIR TEMPERATURE FOR OPERATION: -20 to 60 °C
- COOLING METHOD: Natural convection
- COMPATIBILITY/APPLICATION:
- COMPATIBLE CONTACTORS: TeSys D series (e.g., LC1D25, LC1D32, LC1D38)
- APPLICATION: Overload and phase failure protection for AC motors in industrial machinery, HVAC systems, pumping stations, and conveyor systems.