{"product_id":"siemens-overload-relay-2-8-4a-thermal-for-motor-protection-size-s00","title":"Siemens Overload relay, 2.8 - 4A thermal for motor protection, size S00","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe Siemens 3RU2116-1EB1 is a thermal overload relay from the SIRIUS 3RU2 family (size S00), designed to protect three-phase motors from overload, phase failure or prolonged overcurrent. It provides adjustable overload protection (2.8 … 4.0 A) and includes auxiliary contacts for signalling or control circuits. The device may be used as a stand-alone overload protection unit or mounted directly to compatible contactors for compact motor starter assemblies.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eThermal overload relay, SIRIUS 3RU2 series, size S00\u003c\/li\u003e\n\u003cli\u003eAdjustable overload protection: 2.8 – 4.0 A (trip class 10)\u003c\/li\u003e\n\u003cli\u003eThree-pole main circuit suitable for 3-phase motors\u003c\/li\u003e\n\u003cli\u003eAuxiliary contacts: 1 NO + 1 NC — for signalling or control integration\u003c\/li\u003e\n\u003cli\u003eManual or automatic reset option — allows flexibility in operation after trip\u003c\/li\u003e\n\u003cli\u003eScrew-terminal connections for main and auxiliary circuits — reliable for industrial wiring\u003c\/li\u003e\n\u003cli\u003eRated insulation voltage up to 690 V, surge withstand up to 6 kV — suitable for industrial supply environments\u003c\/li\u003e\n\u003cli\u003eAmbient operating temperature: –40 °C … +70 °C — wide environmental tolerance\u003c\/li\u003e\n\u003cli\u003eCompact S00 size — suitable for mounting on small contactors or in constrained control compartments\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eTechnical Specifications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eArticle Number:\u003c\/strong\u003e 3RU2116-1EB1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Thermal overload relay, SIRIUS 3RU2 series\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContactor Size (compatible):\u003c\/strong\u003e S00\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverload Adjustment Range:\u003c\/strong\u003e 2.8 … 4.0 A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Poles (Main Circuit):\u003c\/strong\u003e 3-pole (for 3-phase motors)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAuxiliary Contacts:\u003c\/strong\u003e 1 NO + 1 NC (for signalling \/ control output)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReset Type:\u003c\/strong\u003e Manual or automatic reset selectable\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRated Insulation Voltage (Ui):\u003c\/strong\u003e 690 V\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSurge Withstand Voltage:\u003c\/strong\u003e 6 kV\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProtection Class \/ Housing Rating:\u003c\/strong\u003e IP20 (when terminals and housing correctly enclosed)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAmbient Operating Temperature:\u003c\/strong\u003e –40 °C … +70 °C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePollution Degree \/ Environmental Rating:\u003c\/strong\u003e Pollution degree 3 (industrial environments)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting \/ Connection:\u003c\/strong\u003e Screw terminals for main and auxiliary circuits; direct mounting on compatible size-S00 contactors or stand-alone installation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReset \/ Trip Indication:\u003c\/strong\u003e Overload trip with thermal-bimetal mechanism; auxiliary contacts change state on trip for external signalling or control logic\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eCompliance \u0026amp; Standards\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePart of Siemens SIRIUS 3RU2 motor-protection relay family — designed for IEC\/EN conformity in motor protection circuits\u003c\/li\u003e\n\u003cli\u003eInsulation and surge withstand ratings suitable for industrial AC motor supply (up to 690 V)\u003c\/li\u003e\n\u003cli\u003eSuitable for ambient and environmental conditions common in industrial control panels and motor starter systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eApplications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe 3RU2116-1EB1 is ideal for protecting three-phase motors against overload, phase imbalance, and prolonged overcurrent — commonly used in small motor feeders, compact motor starters, pumps, fans, compressors, HVAC systems, and light- to medium-duty machinery. It works as part of a complete motor starter (in combination with contactors), or as a stand-alone overload relay for retrofit or custom control-panel installations requiring adjustable protection and external signalling integration.\u003c\/p\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":40775037091904,"sku":"3RU2116-1EB1","price":992.68,"currency_code":"ZAR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0556\/3662\/3424\/files\/3RU2116-1EB1.jpg?v=1764921692","url":"https:\/\/industrial.rubicon.tech\/products\/siemens-overload-relay-2-8-4a-thermal-for-motor-protection-size-s00","provider":"Rubicon Group Industrial Technology Shop","version":"1.0","type":"link"}