Schneider Electric LR3D3557 - Overload Relay 55-70A
Schneider Electric LR3D3557 - Overload Relay 55-70A

Schneider Electric LR3D3557 - Overload Relay 55-70A

Schneider Electric
Price
Save $1.90
/
Condition
  • In stock, ready to ship
  • Backordered, shipping soon
Call for Price
Schneider Electric LR3D3557 is a thermal overload relay designed to protect motors from overload and phase failure conditions. It operates with a voltage rating of up to 690 V AC and a current range of 55 to 70 A, ensuring precise protection for industrial motor circuits. The relay features a compact 75 mm width, weighs 1.17 lb, and is constructed with durable materials for reliable performance in demanding environments. It complies with multiple international standards including EN/IEC 60947-4-1, EN/IEC 60947-5-1, UL 60947-4-1, UL 60947-5-1, CSA C22.2 No 60947-4-1, CSA C22.2 No 60947-5-1, and GB/T 14048.4 and GB/T 14048.5. This overload relay is suitable for use in motor control centers, conveyor systems, pumps, and other industrial machinery requiring dependable overload protection.

Key Features & Specifications
  • Type: Thermal overload relay, Class 10 trip class, manual/automatic reset
  • Voltage Rating: 690 V AC
  • Current Rating: 55-70 A
  • Dimensions: 75 mm width
  • Standards: EN/IEC 60947-4-1, EN/IEC 60947-5-1, UL 60947-4-1, UL 60947-5-1, CSA C22.2 No 60947-4-1, CSA C22.2 No 60947-5-1, GB/T 14048.4, GB/T 14048.5
  • Applications: Motor protection in industrial machinery, conveyors, pumps, compressors
  • Switch Type: Thermal overload
  • Configuration: 3-pole
  • Coil Voltage Maximum: Not applicable (thermal)
  • Temp Rating: -20°C to 60°C
  • Shipping Dimensions: 75 mm x 100 mm x 80 mm
  • Phase: 3-phase
  • Voltage: 690 V AC
  • Amperage: 55-70 A
  • AIC rating: Not applicable (overload relay)
  • Connection: Screw terminals
  • Poles: 3
  • Protection: Overload, phase failure
  • Functions: Overload protection, phase imbalance detection
  • Frame Size: TeSys D
  • Trip Type: Thermal bimetallic
  • Panel Type: Not applicable
  • Breaker Type: Not applicable
  • Control Voltage Minimum: Not applicable
  • Control Voltage Maximum: Not applicable
  • MCM Size: Not applicable
  • Metal Type: Not applicable
  • Panel Style: Not applicable
  • Bus Type: Not applicable
  • Fuse Class: Not applicable
  • Insulation Temperature: 85°C
  • Inductance: Not applicable
  • Impedance: Not applicable
  • Barrels: Not applicable
  • Class Rating: Class 10
  • Diameter: Not applicable
  • Velocity: Not applicable
  • Clip Center: Not applicable
  • Clas: Not applicable
  • Mounting: DIN rail or screw
  • Hz: 50/60 Hz
  • Coil Material: Not applicable
  • Horse Power: Not applicable
  • Aux Contacts: 1 NO + 1 NC
  • CPT: Not applicable
  • Full Load Amps: 55-70 A
  • Dist Voltage: Not applicable
  • Bucket Size: Not applicable
  • Bucket Style: Not applicable
  • Bucket Type: Not applicable
  • Full Load Amp Maximum: 70 A
  • Full Load Amp Minimum: 55 A
  • Enclosure: Open style
  • Relay Style: Thermal overload
  • Coil Voltage Minimum: Not applicable
  • Wire: 14-4 AWG
  • Amperage Maximum: 70 A
  • Amperage Minimum: 55 A
  • Nema Rating: Not applicable
  • Switch Style: Not applicable
  • Wire Size: 14-4 AWG
  • Certification: EN/IEC, UL, CSA, GB/T
  • Circuit Breaker Mounting Style: Not applicable
  • Terminal Connection: Screw
  • Frequency Rating: 50/60 Hz
  • Phase Connection: 3-phase
  • Standards: EN/IEC 60947-4-1, etc.
  • Compatible Frames: TeSys D contactors
  • Installation Type: Panel or DIN rail
  • Item QTY: 1
  • Nema Starter Size: Not applicable
  • Breaker Frame: Not applicable
  • Current Rating: 55-70 A
  • Reverse Standoff Voltage: Not applicable
  • Watts: Not applicable
  • Peak Pulse Current: Not applicable
  • Breakdown Voltage (MIN VBR@IT ) (V): Not applicable
  • Breakdown Voltage (VBR@IT) (V): Not applicable
  • Polarity: Not applicable
  • Operating Temperature Maximum Celsius: 60°C
  • Max Clamp Voltage: Not applicable
  • On-State Current: Not applicable


Product Identification
  • UPC: 060648533586
  • GTIN: 03606485335865