{"product_id":"siemens-lrd-21","title":"LRD-21","description":"\u003ch2\u003eOverview of Siemens LRD-21 Thermal Overload Relay\u003c\/h2\u003e\n\u003cp\u003eThe Siemens LRD-21 is a thermal overload relay designed to provide reliable motor protection by preventing damage from overload currents. Adjustable for current settings between 12 to 18 A, it offers phase loss and phase unbalance detection with a Class 10A trip characteristic according to IEC 60947-4-1 standards. This relay is suitable for use with compatible Siemens and Schneider Electric contactors, ensuring efficient motor control in industrial applications.\u003c\/p\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eAdjustable current range from 12 to 18 A for precise motor protection.\u003c\/li\u003e\n  \u003cli\u003ePhase failure sensitivity with tripping at 30% of rated current for one phase lost.\u003c\/li\u003e\n  \u003cli\u003eThermal Class 10A trip characteristic for standard motor overload protection.\u003c\/li\u003e\n  \u003cli\u003eManual or automatic reset options for operational flexibility.\u003c\/li\u003e\n  \u003cli\u003eIsolated Normally Closed (NC) trip contact and Normally Open (NO) alarm contact.\u003c\/li\u003e\n  \u003cli\u003eRed stop button for manual motor stop operation and blue reset button for quick resetting.\u003c\/li\u003e\n  \u003cli\u003eSuitable for a mounting system compatible with LC1D09 to LC1D32 contactors.\u003c\/li\u003e\n  \u003cli\u003eWide operating temperature range from -20 to +60 °C.\u003c\/li\u003e\n  \u003cli\u003eProtection rating IP20 and conformity with IEC 60529.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eLRD-21\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eCurrent Setting Range\u003c\/td\u003e\n\u003ctd\u003e12 to 18 A\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eTrip Class\u003c\/td\u003e\n\u003ctd\u003e10A (IEC 60947-4-1)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003ePhase Failure Sensitivity\u003c\/td\u003e\n\u003ctd\u003eTrip at 30% In on one phase lost\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eTrip Contact\u003c\/td\u003e\n\u003ctd\u003e1 Normally Closed (NC)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eAlarm Contact\u003c\/td\u003e\n\u003ctd\u003e1 Normally Open (NO)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eReset\u003c\/td\u003e\n\u003ctd\u003eManual or Automatic\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eMounting Compatibility\u003c\/td\u003e\n\u003ctd\u003eLC1D09 to LC1D32 contactors\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-20 to +60 °C\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eDegree of Protection\u003c\/td\u003e\n\u003ctd\u003eIP20\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eInsulation Voltage\u003c\/td\u003e\n\u003ctd\u003eUp to 690 V\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eImpulse Withstand Voltage\u003c\/td\u003e\n\u003ctd\u003e6 kV\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eApplications \/ Use Case\u003c\/h2\u003e\n\u003cp\u003eIdeal for the protection of three-phase motors in industrial and manufacturing environments. It safeguards motors against overload and phase faults, ensuring reliable operation and extended motor life.\u003c\/p\u003e\n\n\u003cp\u003eSiemens offers robust quality and compliance with international standards for safe and effective motor protection.\u003c\/p\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":47796297990443,"sku":null,"price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0837\/4671\/7995\/files\/Leadtime_c684f3ea-bbbd-4019-9d17-bb521e032e54.png?v=1723552454","url":"https:\/\/leadtime.ca\/products\/siemens-lrd-21","provider":"LEADTIME","version":"1.0","type":"link"}