{"product_id":"siemens-overload-relay-for-motor-protection-size-s0-5-5-8a","title":"Siemens Overload relay for motor protection, size S0, 5.5 - 8A","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe Siemens 3RU2126-1HB0 is a SIRIUS thermal overload relay designed to protect three-phase motors against overload and phase failure. Part of the 3RU21 series, this relay features an adjustable current setting range of 5.5 A to 8 A and a Class 10 tripping characteristic, ensuring reliable protection under standard motor starting conditions. It is intended for direct mounting onto compatible SIRIUS contactors, forming a compact and dependable motor starter solution for industrial control systems.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSIRIUS thermal overload relay for motor protection\u003c\/li\u003e\n\u003cli\u003eAdjustable current setting range from 5.5 A to 8 A\u003c\/li\u003e\n\u003cli\u003eClass 10 tripping characteristic for standard motor applications\u003c\/li\u003e\n\u003cli\u003eReliable protection against overload and phase failure\u003c\/li\u003e\n\u003cli\u003eDirect mounting onto compatible SIRIUS contactors\u003c\/li\u003e\n\u003cli\u003eIntegrated auxiliary contacts for signaling and control\u003c\/li\u003e\n\u003cli\u003eManual or automatic reset selectable\u003c\/li\u003e\n\u003cli\u003eCompact design for space-efficient motor starter assemblies\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 3RU2126-1HB0\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Family:\u003c\/strong\u003e SIRIUS 3RU21 Thermal Overload Relays\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDevice Type:\u003c\/strong\u003e Thermal overload relay\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFrame Size:\u003c\/strong\u003e S0\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCurrent Setting Range:\u003c\/strong\u003e 5.5 – 8 A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTripping Class:\u003c\/strong\u003e Class 10\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Poles:\u003c\/strong\u003e 3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAuxiliary Contacts:\u003c\/strong\u003e 1 NO + 1 NC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e Direct mounting on SIRIUS contactors\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReset Options:\u003c\/strong\u003e Manual or automatic\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRated Insulation Voltage:\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\u003eAmbient Operating Temperature:\u003c\/strong\u003e −40 °C to +70 °C\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\u003eDesigned in accordance with IEC 60947-4-1\u003c\/li\u003e\n\u003cli\u003eMeets Siemens SIRIUS requirements for motor protection devices\u003c\/li\u003e\n\u003cli\u003eSuitable for global industrial motor control applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eApplications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe Siemens 3RU2126-1HB0 thermal overload relay is used to protect three-phase motors in industrial machinery, pumps, fans, compressors, and conveyor systems. When combined with a compatible SIRIUS contactor, it forms a compact motor starter that ensures reliable protection against overload conditions and phase loss, supporting safe and efficient operation in automation and control panels.\u003c\/p\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":40775032045632,"sku":"3RU2126-1HB0","price":831.1,"currency_code":"ZAR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0556\/3662\/3424\/files\/G_NSA0_XX_93014I_853777ab-ab2b-4ad9-a006-2697072a275c.jpg?v=1765454060","url":"https:\/\/industrial.rubicon.tech\/products\/siemens-overload-relay-for-motor-protection-size-s0-5-5-8a","provider":"Rubicon Group Industrial Technology Shop","version":"1.0","type":"link"}