{"product_id":"siemens-3ru1126-4bd0-thermal-overload-relay","title":"Siemens 3RU1126-4BD0 Thermal Overload Relay","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe SIEMENS 3RU1126-4BD0 is a thermal overload relay designed to protect three-phase motors and electrical loads from damage caused by sustained overcurrent conditions. The relay monitors current draw and trips the circuit when heat buildup from excess load exceeds safe operating thresholds. It mounts directly onto compatible contactor assemblies or can be installed in a panel configuration, making it a practical choice for motor branch circuit protection in industrial and commercial electrical systems. Licensed electricians and industrial maintenance technicians are the primary installers of this device.\u003c\/p\u003e\n\u003cp\u003eThis thermal overload relay is suited for motor protection applications in commercial and industrial environments, including conveyor systems, pump controls, compressor circuits, and HVAC drive panels. It fits into motor control center builds and standalone starter assemblies where reliable, automatic overload protection is required. The 3RU1126-4BD0 is appropriate for new installation work and as a direct replacement in existing Siemens motor control assemblies.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eThermal overload protection guards motors against sustained overcurrent and heat damage\u003c\/li\u003e\n  \u003cli\u003eDirect contactor-mount design simplifies integration into motor starter assemblies\u003c\/li\u003e\n  \u003cli\u003eCompact form factor suitable for panel and motor control center installations\u003c\/li\u003e\n  \u003cli\u003eManual and automatic reset options common to this relay family support flexible control strategies\u003c\/li\u003e\n  \u003cli\u003eLightweight construction at 0.399 pounds minimizes added load on contactor mounting points\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or new-installation thermal overload relay for use in compatible Siemens motor starter and contactor assemblies. Verify contactor frame size and current range against the 3RU1126-4BD0 datasheet before installation.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation should be performed by a qualified electrician in accordance with NEC Article 430 governing motor branch circuit and overload protection. De-energize and lock out the circuit per LOTO procedures before handling or mounting the relay. Confirm the relay current setting matches the full-load amperage rating of the motor being protected. Do not bypass or manually hold the relay in the closed position during normal operation.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.399 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength\u003c\/strong\u003e: 4.016 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWidth\u003c\/strong\u003e: 1.929 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeight\u003c\/strong\u003e: 4.016 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUPC\u003c\/strong\u003e: 75455441207\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: SIEMENS\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 3RU1126-4BD0\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SIEMENS","offers":[{"title":"Default Title","offer_id":51383610802482,"sku":"3RU1126-4BD0","price":227.81,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/312678928.jpg?v=1782602099","url":"https:\/\/voomisupply.com\/products\/siemens-3ru1126-4bd0-thermal-overload-relay","provider":"Voomi Supply","version":"1.0","type":"link"}