{"product_id":"siemens-3ru2136-1hb0","title":"Siemens 3RU2136-1HB0 Thermal Overload Relay","description":"\u003cp data-path-to-node=\"1\"\u003eThe \u003cb data-path-to-node=\"1\" data-index-in-node=\"4\"\u003eSiemens 3RU2136-1HB0\u003c\/b\u003e is a size \u003cb data-path-to-node=\"1\" data-index-in-node=\"35\"\u003eS2\u003c\/b\u003e bimetallic thermal overload relay designed for low-current motor protection on a medium-sized frame. In the Canadian elevator industry, this specific unit is often found protecting \u003cb data-path-to-node=\"1\" data-index-in-node=\"219\"\u003eBrake Motors\u003c\/b\u003e, \u003cb data-path-to-node=\"1\" data-index-in-node=\"233\"\u003eCooling Fans\u003c\/b\u003e, or \u003cb data-path-to-node=\"1\" data-index-in-node=\"250\"\u003eSecondary Pump Motors\u003c\/b\u003e that have a Full Load Amperage (FLA) between 5.5A and 8.0A. It is engineered to plug directly into the load-side terminals of an S2 contactor, such as the \u003cb data-path-to-node=\"1\" data-index-in-node=\"427\"\u003e3RT2035\u003c\/b\u003e.\u003c\/p\u003e\n\u003cp data-path-to-node=\"2\"\u003e\u003cb data-path-to-node=\"2\" data-index-in-node=\"0\"\u003eCore Specifications\u003c\/b\u003e\u003c\/p\u003e\n\u003cul data-path-to-node=\"3\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"3,0,0\"\u003e\u003cb data-path-to-node=\"3,0,0\" data-index-in-node=\"0\"\u003eFrame Size:\u003c\/b\u003e S2 (55mm width)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"3,1,0\"\u003e\u003cb data-path-to-node=\"3,1,0\" data-index-in-node=\"0\"\u003eCurrent Setting Range:\u003c\/b\u003e \u003cb data-path-to-node=\"3,1,0\" data-index-in-node=\"23\"\u003e5.5A to 8.0A\u003c\/b\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"3,2,0\"\u003e\u003cb data-path-to-node=\"3,2,0\" data-index-in-node=\"0\"\u003eTrip Class:\u003c\/b\u003e Class 10 (Standard response for elevator motor protection)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"3,3,0\"\u003e\u003cb data-path-to-node=\"3,3,0\" data-index-in-node=\"0\"\u003eIntegrated Contacts:\u003c\/b\u003e \u003cb data-path-to-node=\"3,3,0\" data-index-in-node=\"21\"\u003e1 NO + 1 NC\u003c\/b\u003e (Signal\/Logic contacts)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"3,4,0\"\u003e\u003cb data-path-to-node=\"3,4,0\" data-index-in-node=\"0\"\u003eMounting:\u003c\/b\u003e Direct mount to contactor (or standalone via bracket)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"3,5,0\"\u003e\u003cb data-path-to-node=\"3,5,0\" data-index-in-node=\"0\"\u003ePhase Failure Sensitivity:\u003c\/b\u003e Yes (Accelerated tripping if a phase is lost)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-path-to-node=\"4\"\u003e\n\u003ch3 data-path-to-node=\"5\"\u003e\u003cb data-path-to-node=\"5\" data-index-in-node=\"0\"\u003eIntegrated Auxiliary Contacts\u003c\/b\u003e\u003c\/h3\u003e\n\u003cp data-path-to-node=\"6\"\u003eThe relay includes built-in terminals for control logic, essential for meeting Canadian elevator safety and monitoring codes:\u003c\/p\u003e\n\u003cul data-path-to-node=\"7\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"7,0,0\"\u003e\u003cb data-path-to-node=\"7,0,0\" data-index-in-node=\"0\"\u003e95–96 (NC - Normally Closed):\u003c\/b\u003e The \u003cb data-path-to-node=\"7,0,0\" data-index-in-node=\"34\"\u003eSafety\/Trip\u003c\/b\u003e contact. This is typically wired in series with the main contactor coil. When the relay trips due to heat, this contact opens, immediately dropping the contactor.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"7,1,0\"\u003e\u003cb data-path-to-node=\"7,1,0\" data-index-in-node=\"0\"\u003e97–98 (NO - Normally Open):\u003c\/b\u003e The \u003cb data-path-to-node=\"7,1,0\" data-index-in-node=\"32\"\u003eSignal\/Fault\u003c\/b\u003e contact. This closes upon a trip to notify the controller (CPU) of a thermal fault, allowing the system to log the error and park the car.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-path-to-node=\"8\"\u003e\n\u003ch3 data-path-to-node=\"9\"\u003e\u003cb data-path-to-node=\"9\" data-index-in-node=\"0\"\u003eAuxiliary \u0026amp; Expansion Accessories\u003c\/b\u003e\u003c\/h3\u003e\n\u003cp data-path-to-node=\"10\"\u003eEven though this is a lower current range, it uses the standard S2 accessory suite for cabinet integration:\u003c\/p\u003e\n\u003cp data-path-to-node=\"11\"\u003e\u003cb data-path-to-node=\"11\" data-index-in-node=\"0\"\u003eRemote Reset Modules\u003c\/b\u003e\u003c\/p\u003e\n\u003cul data-path-to-node=\"12\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"12,0,0\"\u003e\u003cb data-path-to-node=\"12,0,0\" data-index-in-node=\"0\"\u003e3RU2900-1AB00:\u003c\/b\u003e \u003cb data-path-to-node=\"12,0,0\" data-index-in-node=\"15\"\u003eElectrical Remote Reset.\u003c\/b\u003e Allows the technician to reset a tripped overload via a button on the controller door or a remote signal (Compatible with 24V–250V AC\/DC).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"12,1,0\"\u003e\u003cb data-path-to-node=\"12,1,0\" data-index-in-node=\"0\"\u003e3RU1900-1A \/ 1B \/ 1C:\u003c\/b\u003e \u003cb data-path-to-node=\"12,1,0\" data-index-in-node=\"22\"\u003eMechanical Remote Reset.\u003c\/b\u003e A flexible cable (up to 1000mm) that allows manual resetting from outside the high-voltage cabinet.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-path-to-node=\"13\"\u003e\u003cb data-path-to-node=\"13\" data-index-in-node=\"0\"\u003eMounting \u0026amp; Safety\u003c\/b\u003e\u003c\/p\u003e\n\u003cul data-path-to-node=\"14\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"14,0,0\"\u003e\u003cb data-path-to-node=\"14,0,0\" data-index-in-node=\"0\"\u003e3RU2936-3AA01:\u003c\/b\u003e \u003cb data-path-to-node=\"14,0,0\" data-index-in-node=\"15\"\u003eIndividual Mount Bracket.\u003c\/b\u003e Required if you need to mount the overload relay on a DIN rail separately from the contactor.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"14,1,0\"\u003e\u003cb data-path-to-node=\"14,1,0\" data-index-in-node=\"0\"\u003e3RV2908-0P:\u003c\/b\u003e \u003cb data-path-to-node=\"14,1,0\" data-index-in-node=\"12\"\u003eSealable Cover.\u003c\/b\u003e A clear, lockable cover that prevents unauthorized tampering with the 5.5A–8.0A dial after the inspector has verified the settings.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"14,2,0\"\u003e\u003cb data-path-to-node=\"14,2,0\" data-index-in-node=\"0\"\u003e3RT2936-4EA2:\u003c\/b\u003e \u003cb data-path-to-node=\"14,2,0\" data-index-in-node=\"14\"\u003eTerminal Covers.\u003c\/b\u003e Provides finger-safe protection for the S2 terminals to prevent accidental contact with 480V\/600V power lines.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-path-to-node=\"15\"\u003e\n\u003ch3 data-path-to-node=\"16\"\u003e\u003cb data-path-to-node=\"16\" data-index-in-node=\"0\"\u003eField Maintenance \u0026amp; Canadian Code Notes\u003c\/b\u003e\u003c\/h3\u003e\n\u003cul data-path-to-node=\"17\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"17,0,0\"\u003e\u003cb data-path-to-node=\"17,0,0\" data-index-in-node=\"0\"\u003eDial Calibration:\u003c\/b\u003e Per Canadian electrical safety codes, the adjustment dial must be set exactly to the \u003cb data-path-to-node=\"17,0,0\" data-index-in-node=\"103\"\u003eMotor Nameplate FLA\u003c\/b\u003e. If you find this 8A-max relay is constantly tripping on a circuit, verify that the motor hasn't been replaced with a higher-HP model requiring a larger current range.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"17,1,0\"\u003e\u003cb data-path-to-node=\"17,1,0\" data-index-in-node=\"0\"\u003eThe \"Blue Slide\" Test:\u003c\/b\u003e During routine maintenance or annual inspections, use the blue \u003cb data-path-to-node=\"17,1,0\" data-index-in-node=\"86\"\u003e\"Test\"\u003c\/b\u003e slide on the face. This manually actuates the 95–96 contact. You must verify that the car is unable to run while this contact is open.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"17,2,0\"\u003e\u003cb data-path-to-node=\"17,2,0\" data-index-in-node=\"0\"\u003eTerminal Torque:\u003c\/b\u003e Even at 8A, terminal integrity is critical to prevent localized heating that could cause a \"false trip.\" Ensure S2 terminals are torqued to \u003cb data-path-to-node=\"17,2,0\" data-index-in-node=\"157\"\u003e3.0–4.5 Nm\u003c\/b\u003e.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"17,3,0\"\u003e\u003cb data-path-to-node=\"17,3,0\" data-index-in-node=\"0\"\u003eWhy S2 for low amps?\u003c\/b\u003e While 5.5A–8.0A is usually an S0 range, this S2 version is used when the control logic requires the heavy-duty frame of an S2 contactor for its higher auxiliary contact capacity or mechanical durability.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"R.A.M. Parts","offers":[{"title":"Default Title","offer_id":48128884179096,"sku":null,"price":0.0,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/4369\/5000\/files\/rn-image_picker_lib_temp_36e1364f-8533-499e-a645-6796f0aa52d9.jpg?v=1771365710","url":"https:\/\/parts4rem.ca\/products\/siemens-3ru2136-1hb0","provider":"Parts4REM","version":"1.0","type":"link"}