{"product_id":"schneider-electric-lr3d350-thermal-iec-overload-relay","title":"Schneider Electric LR3D350 Thermal Iec Overload Relay","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe SCHNEIDER ELECTRIC LR3D350 is a thermal IEC overload relay rated for 37 to 50 amps and up to 690 volts AC. It protects motor starters and downstream equipment from sustained overcurrent conditions by tripping on excess heat generated by overload current. The relay uses thermal sensing to detect overload conditions and is classified as Trip Class 10A, meaning it trips within 10 seconds at six times the rated current. This device is installed by licensed electricians and industrial maintenance technicians working on motor control circuits in commercial and industrial applications.\u003c\/p\u003e\u003cp\u003eThe LR3D350 is designed for use in IEC motor starter assemblies where reliable overload protection is required. It is compatible with LC1D40A and LC1D65A contactors, making it a direct fit for those motor starter configurations. Typical installation scenarios include pump motor panels, HVAC equipment control panels, conveyor systems, and other three-phase motor-driven equipment in commercial or light industrial facilities. The Trip Class 10A rating suits applications with normal starting loads that do not require extended startup time.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eThermal sensing method detects overload current without electronic components\u003c\/li\u003e\n\u003cli\u003eAdjustable overload range from 37 to 50 amps to match motor full-load amperage\u003c\/li\u003e\n\u003cli\u003eTrip Class 10A for standard motor starting applications\u003c\/li\u003e\n\u003cli\u003eRated for up to 690 volts AC for compatibility with international motor circuits\u003c\/li\u003e\n\u003cli\u003eMeets ATEX, CSA, UL 508, and EN\/IEC 60947-4-1 certifications for broad compliance\u003c\/li\u003e\n\u003cli\u003eDirect mounting companion to LC1D40A and LC1D65A contactors\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use with LC1D40A and LC1D65A IEC motor contactors as specified by the manufacturer.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation should be performed by a qualified electrician in accordance with NEC requirements and applicable local codes. De-energize and lock out the motor control panel before installing or adjusting the overload relay. Set the overload current dial to match the motor nameplate full-load amperage before returning the circuit to service. Do not bypass or jumper the overload relay contacts during testing.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMinimum Overload Current\u003c\/strong\u003e: 37 amps\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Overload Current\u003c\/strong\u003e: 50 amps\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage Rating\u003c\/strong\u003e: 690 volts AC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrip Class\u003c\/strong\u003e: 10A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSensing Method\u003c\/strong\u003e: Thermal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Height\u003c\/strong\u003e: 2.4 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Width\u003c\/strong\u003e: 4.3 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 5.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.94 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCertifications\u003c\/strong\u003e: ATEX 94\/9\/CE, CSA C22.2 No. 14, EN\/IEC 60947-4-1, EN\/IEC 60947-5-1, UL 508\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: SCHNEIDER ELECTRIC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: LR3D350\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SCHNEIDER ELECTRIC","offers":[{"title":"Default Title","offer_id":51541947515186,"sku":"LR3D350","price":140.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/58b5fc42b44f1aad8f893c2810502a35.jpg?v=1785888246","url":"https:\/\/voomisupply.com\/products\/schneider-electric-lr3d350-thermal-iec-overload-relay","provider":"Voomi Supply","version":"1.0","type":"link"}