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Schneider Electric LR3D340 - Thermal Overload Relay 30-40A

Schneider Electric
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Schneider Electric LR3D340 is a TeSys Deca thermal overload relay designed for motor protection with a 30-40 amp adjustable range and 3 poles. It provides reliable protection for 3-phase motors up to 18.5 kW at 400V, featuring a tripping class 10A and suitability for unbalanced loads, with a maximum voltage rating of 600-690 V AC and 1 normally open plus 1 normally closed auxiliary contact. The relay measures 2.8 in (70 mm) in height, 2.2 in (55 mm) in width, and 4.8 in (123 mm) in depth, weighs 0.863 lb, and is compatible with LC1D series contactors on a Size 2 frame. It is certified to CSA C22.2 No 60947-4-1, CSA C22.2 No 60947-5-1, EN/IEC 60947-4-1, EN/IEC 60947-5-1, GB/T 14048.4, GB/T 14048.5, UL 60947-4-1, and UL 60947-5-1, and complies with REACH and RoHS standards, with an operating temperature range of -13–158 °F (-25–70 °C). Typical industrial applications include motor protection in conveyor systems, pumps, compressors, and other three-phase motor-driven equipment.

Key Features & Specifications
  • Type: Thermal overload relay
  • Amperage Range: 30-40 A adjustable
  • Voltage Rating: 600-690 V AC
  • Poles: 3
  • Trip Class: 10A
  • Mounting Type: Size 2 frame, compatible with LC1D series
  • Contacts: 1 NO + 1 NC auxiliary contacts
  • Series: TeSys Deca (LRD)
  • Dimensions: 2.8 in (70 mm) x 2.2 in (55 mm) x 4.8 in (123 mm) (Height x Width x Depth)
  • Weight: 0.863 lb
  • Certification: CSA C22.2 No 60947-4-1, CSA C22.2 No 60947-5-1, EN/IEC 60947-4-1, EN/IEC 60947-5-1, GB/T 14048.4, GB/T 14048.5, REACH, RoHS, UL 60947-4-1, UL 60947-5-1
  • Temp Rating: -13–158 °F (-25–70 °C)


Product Identification
  • UPC: 785901952572
  • GTIN: 03389119215916