OPIS PRODUKTU
SCHNEIDER ELECTRIC LRD3357 - Thermal Overload Relay
This device provides thermal overload protection for AC motors, integrating directly with TeSys D contactors. It safeguards industrial machinery against overcurrents, phase unbalance, and prolonged starting conditions, ensuring operational continuity and equipment longevity in control panel applications. The relay utilizes bimetallic strips for precise thermal sensing and offers adjustable current settings for diverse motor ratings.
Technical Specifications:
- SERIES/FAMILY: TeSys LRD
- COMPONENT TYPE: Thermal Overload Relay
- ELECTRICAL SPECS:
- CURRENT ADJUSTMENT RANGE: 30-38 A
- RATED OPERATIONAL VOLTAGE: Up to 690 VAC
- RATED INSULATION VOLTAGE: 690 V AC (conforming to IEC 60947-4-1)
- RATED IMPULSE WITHSTAND VOLTAGE: 6 kV
- TRIP CLASS: Class 10 (conforming to IEC 60947-4-1)
- MECHANICAL/PHYSICAL:
- AUXILIARY CONTACTS: 1 NO + 1 NC
- RESET TYPE: Manual/Automatic
- MOUNTING: Direct mounting under contactor (LC1D40A, LC1D50A, LC1D65A) or standalone with terminal block LAD96560
- INTERFACE/CONTROL:
- CONTROL CIRCUIT RATED OPERATIONAL CURRENT: 0.12 A at 125 V DC, 1.5 A at 24 V DC, 0.12 A at 250 V DC, 3 A at 120 V AC, 2 A at 240 V AC, 1 A at 400 V AC, 0.75 A at 500 V AC, 0.6 A at 690 V AC (for auxiliary contacts)
- ENVIRONMENTAL/MOUNTING:
- IP RATING: IP20 (terminals), IP20 (casing)
- OPERATING TEMPERATURE: -20 to 60 °C
- STORAGE TEMPERATURE: -60 to 70 °C
- PROTECTION TYPE: Overload protection, Phase failure protection
- COMPATIBILITY/APPLICATION:
- COMPATIBLE CONTACTORS: TeSys D series (LC1D40A, LC1D50A, LC1D65A)
- APPLICATION: Motor protection in industrial control panels, HVAC systems, pumping stations, and general machinery.
