{"product_id":"siemens-3ru2136-4bb0","title":"Siemens 3RU2136-4BB0 Thermal Overload Relay","description":"\u003cp data-path-to-node=\"1\"\u003eThe \u003cb data-path-to-node=\"1\" data-index-in-node=\"4\"\u003eSiemens 3RU2136-4BB0\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 precision motor protection on a robust frame. In the Canadian elevator industry, this unit is typically utilized for \u003cb data-path-to-node=\"1\" data-index-in-node=\"202\"\u003eMid-sized Traction Machines\u003c\/b\u003e or \u003cb data-path-to-node=\"1\" data-index-in-node=\"233\"\u003eHydraulic Pump Motors\u003c\/b\u003e with a Full Load Amperage (FLA) between 14A and 20A. It is engineered to plug directly into the load-side box terminals of an S2 contactor, such as the \u003cb data-path-to-node=\"1\" data-index-in-node=\"407\"\u003e3RT2035\u003c\/b\u003e or \u003cb data-path-to-node=\"1\" data-index-in-node=\"418\"\u003e3RT2036\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\"\u003e14.0A to 20.0A\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 features built-in terminals for control logic, which are 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, this contact opens, immediately dropping the contactor to protect the motor windings.\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) that a thermal fault has occurred, allowing the car to park and log the error.\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 elevator controller cabinets, several accessories can be added:\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 14A–20A 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 bypass nuisance trips; if the relay is tripping at the correct FLA, there is a legitimate mechanical or electrical issue.\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 20A, terminal integrity is critical for heat dissipation. Ensure S2 main terminals are torqued to \u003cb data-path-to-node=\"17,2,0\" data-index-in-node=\"123\"\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 Frame Rationale:\u003c\/b\u003e While this current range (14A–20A) exists in the smaller S0 frame, the S2 version is used when the hoist motor requires the larger S2 contactor for its higher mechanical durability or the specific heat dissipation needs of the controller design.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"R.A.M. Parts","offers":[{"title":"Default Title","offer_id":48128884048024,"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_f4299590-c178-48f7-802e-c1bf7c6d2faf.jpg?v=1771365916","url":"https:\/\/parts4rem.ca\/products\/siemens-3ru2136-4bb0","provider":"Parts4REM","version":"1.0","type":"link"}