{"product_id":"siemens-3ru2136-4fb0","title":"Siemens 3RU2136-4FB0 Thermal Overload Relay","description":"\u003cp data-path-to-node=\"1\"\u003eThe \u003cb data-path-to-node=\"1\" data-index-in-node=\"4\"\u003eSiemens 3RU2136-4FB0\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 mid-range motor protection. In the Canadian elevator industry, this unit is a standard choice for \u003cb data-path-to-node=\"1\" data-index-in-node=\"183\"\u003eHydraulic Power Units (HPUs)\u003c\/b\u003e and smaller \u003cb data-path-to-node=\"1\" data-index-in-node=\"224\"\u003eTraction Machines\u003c\/b\u003e with a Full Load Amperage (FLA) between 28A and 40A. 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=\"390\"\u003e3RT2035\u003c\/b\u003e, \u003cb data-path-to-node=\"1\" data-index-in-node=\"399\"\u003e3RT2036\u003c\/b\u003e, or \u003cb data-path-to-node=\"1\" data-index-in-node=\"411\"\u003e3RT2037\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\"\u003e28.0A to 40.0A\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 (Logic\/Signal 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, which are critical 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, this opens, immediately dropping the contactor to prevent motor burnout.\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\"\u003eTo improve serviceability in dense controller cabinets, several accessories can be added to the S2 frame:\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 28A–40A 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. Never \"crank up\" the setting to stop nuisance trips; if the relay trips at the correct FLA, there is an underlying electrical or mechanical issue that must be addressed.\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 acts the 95–96 contact. You must verify that the car is unable to run and that the controller registers the fault 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 The S2 frame handles up to 40A. In high-vibration elevator rooms, ensure terminals are torqued to \u003cb data-path-to-node=\"17,2,0\" data-index-in-node=\"115\"\u003e3.0–4.5 Nm\u003c\/b\u003e. Loose leads generate heat that will cause \"false tripping\" or melt the relay housing.\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\"\u003eS2 Footprint:\u003c\/b\u003e This relay is specifically for the 55mm S2 contactors. It will \u003cb data-path-to-node=\"17,3,0\" data-index-in-node=\"77\"\u003enot\u003c\/b\u003e physically fit the smaller S0 (45mm) or larger S3 (70mm) contactors without the standalone bracket and custom wiring.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"R.A.M. Parts","offers":[{"title":"Default Title","offer_id":48128884670616,"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_64e9eb1a-69db-49f5-8c5f-38b78b401455.jpg?v=1771365180","url":"https:\/\/parts4rem.ca\/products\/siemens-3ru2136-4fb0","provider":"Parts4REM","version":"1.0","type":"link"}