{"product_id":"siemens-3rt2028-1ak60","title":"Siemens 3RT2028-1AK60 Contactor","description":"\u003cp data-path-to-node=\"1\"\u003eThe \u003cb data-path-to-node=\"1\" data-index-in-node=\"4\"\u003eSiemens 3RT2028-1AK60\u003c\/b\u003e is a 3-pole, \u003cb data-path-to-node=\"1\" data-index-in-node=\"39\"\u003eSize S0\u003c\/b\u003e magnetic contactor. While it shares the same physical dimensions as the 3RT2027, the 3RT2028 is the high-capacity version of the S0 frame, rated for \u003cb data-path-to-node=\"1\" data-index-in-node=\"196\"\u003e38A\u003c\/b\u003e. In the Canadian elevator industry, it is a standard choice for \u003cb data-path-to-node=\"1\" data-index-in-node=\"264\"\u003eMain Motor Contactors\u003c\/b\u003e on high-duty hydraulic power units or mid-sized traction machines.\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 S0 (45mm 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 Rating (AC-3):\u003c\/b\u003e \u003cb data-path-to-node=\"3,1,0\" data-index-in-node=\"23\"\u003e38A\u003c\/b\u003e (Approx. 25 HP at 460V \/ 18.5 kW at 400V)\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\"\u003eCoil Voltage:\u003c\/b\u003e \u003cb data-path-to-node=\"3,2,0\" data-index-in-node=\"14\"\u003e120V AC (60Hz)\u003c\/b\u003e \/ 110V AC (50Hz)\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 1 NO (Normally Open) + 1 NC (Normally Closed)\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\"\u003eTerminals:\u003c\/b\u003e Screw-type (Box terminals for power)\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\"\u003eAuxiliary Contact Blocks\u003c\/b\u003e\u003c\/h3\u003e\n\u003cp data-path-to-node=\"6\"\u003eBecause elevator safety strings and feedback circuits require multiple inputs, these blocks are snapped onto the contactor to expand its logic capabilities.\u003c\/p\u003e\n\u003cp data-path-to-node=\"7\"\u003e\u003cb data-path-to-node=\"7\" data-index-in-node=\"0\"\u003eFront-Mounted (Snap-on Top)\u003c\/b\u003e\u003c\/p\u003e\n\u003cul data-path-to-node=\"8\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"8,0,0\"\u003e\u003cb data-path-to-node=\"8,0,0\" data-index-in-node=\"0\"\u003e3RH2911-1HA11:\u003c\/b\u003e 1 NO + 1 NC (Basic expansion)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"8,1,0\"\u003e\u003cb data-path-to-node=\"8,1,0\" data-index-in-node=\"0\"\u003e3RH2911-1HA22:\u003c\/b\u003e 2 NO + 2 NC (The \"Standard\" for safety circuit feedback)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"8,2,0\"\u003e\u003cb data-path-to-node=\"8,2,0\" data-index-in-node=\"0\"\u003e3RH2911-1FA40:\u003c\/b\u003e 4 NO (Used for auxiliary signaling to the controller)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"8,3,0\"\u003e\u003cb data-path-to-node=\"8,3,0\" data-index-in-node=\"0\"\u003e3RH2911-1FB22:\u003c\/b\u003e 2 NO + 2 NC (Late-break\/Early-make for specialized timing)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-path-to-node=\"9\"\u003e\u003cb data-path-to-node=\"9\" data-index-in-node=\"0\"\u003eSide-Mounted (Lateral Snap)\u003c\/b\u003e\u003c\/p\u003e\n\u003cul data-path-to-node=\"10\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"10,0,0\"\u003e\u003cb data-path-to-node=\"10,0,0\" data-index-in-node=\"0\"\u003e3RH2921-1DA11:\u003c\/b\u003e 1 NO + 1 NC (Used when cabinet depth is restricted)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"10,1,0\"\u003e\u003cb data-path-to-node=\"10,1,0\" data-index-in-node=\"0\"\u003e3RH2921-1DA20:\u003c\/b\u003e 2 NO (Common for additional signaling)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-path-to-node=\"11\"\u003e\n\u003ch3 data-path-to-node=\"12\"\u003e\u003cb data-path-to-node=\"12\" data-index-in-node=\"0\"\u003eThermal Overload Relays\u003c\/b\u003e\u003c\/h3\u003e\n\u003cp data-path-to-node=\"13\"\u003eThese relays plug directly into the load side (bottom) of the contactor to protect the motor from overheating or single-phasing.\u003c\/p\u003e\n\u003cp data-path-to-node=\"14\"\u003e\u003cb data-path-to-node=\"14\" data-index-in-node=\"0\"\u003eStandard 3RU Bimetallic Relays\u003c\/b\u003e\u003c\/p\u003e\n\u003cul data-path-to-node=\"15\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"15,0,0\"\u003e\u003cb data-path-to-node=\"15,0,0\" data-index-in-node=\"0\"\u003e3RU2126-4FB0:\u003c\/b\u003e \u003cb data-path-to-node=\"15,0,0\" data-index-in-node=\"14\"\u003e28.0A to 40.0A\u003c\/b\u003e (The standard match for the 3RT2028)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"15,1,0\"\u003e\u003cb data-path-to-node=\"15,1,0\" data-index-in-node=\"0\"\u003e3RU2126-4EB0:\u003c\/b\u003e 27.0A to 32.0A (For slightly smaller motors)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"15,2,0\"\u003e\u003cb data-path-to-node=\"15,2,0\" data-index-in-node=\"0\"\u003e3RU2126-4PB0:\u003c\/b\u003e 30.0A to 36.0A\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-path-to-node=\"16\"\u003e\u003cb data-path-to-node=\"16\" data-index-in-node=\"0\"\u003eElectronic Overloads (3RB Series)\u003c\/b\u003e\u003c\/p\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\"\u003e3RB3026-1WB0:\u003c\/b\u003e 10.0A to 40.0A (Provides high-precision solid-state protection)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-path-to-node=\"18\"\u003e\n\u003ch3 data-path-to-node=\"19\"\u003e\u003cb data-path-to-node=\"19\" data-index-in-node=\"0\"\u003eAccessories \u0026amp; Surge Protection\u003c\/b\u003e\u003c\/h3\u003e\n\u003cul data-path-to-node=\"20\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"20,0,0\"\u003e\u003cb data-path-to-node=\"20,0,0\" data-index-in-node=\"0\"\u003eSurge Suppressors:\u003c\/b\u003e Vital for protecting the elevator's CPU from the inductive \"kick\" when the contactor releases.\u003c\/p\u003e\n\u003cul data-path-to-node=\"20,0,1\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"20,0,1,0,0\"\u003e\u003cb data-path-to-node=\"20,0,1,0,0\" data-index-in-node=\"0\"\u003e3RT2926-1CB00:\u003c\/b\u003e RC Element (Best for 120V AC coils)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"20,0,1,1,0\"\u003e\u003cb data-path-to-node=\"20,0,1,1,0\" data-index-in-node=\"0\"\u003e3RT2926-1BB00:\u003c\/b\u003e Varistor (Voltage spike clamping)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"20,1,0\"\u003e\u003cb data-path-to-node=\"20,1,0\" data-index-in-node=\"0\"\u003eMechanical Interlocks:\u003c\/b\u003e Used for Up\/Down reversing or Star-Delta pairs.\u003c\/p\u003e\n\u003cul data-path-to-node=\"20,1,1\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"20,1,1,0,0\"\u003e\u003cb data-path-to-node=\"20,1,1,0,0\" data-index-in-node=\"0\"\u003e3RA2922-2H:\u003c\/b\u003e Mechanical interlock only (Prevents both from closing at once)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"20,1,1,1,0\"\u003e\u003cb data-path-to-node=\"20,1,1,1,0\" data-index-in-node=\"0\"\u003e3RA2923-2AA1:\u003c\/b\u003e Reversing wiring kit (Includes interlock and busbars)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"20,2,0\"\u003e\u003cb data-path-to-node=\"20,2,0\" data-index-in-node=\"0\"\u003eManual Safety:\u003c\/b\u003e\u003c\/p\u003e\n\u003cul data-path-to-node=\"20,2,1\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"20,2,1,0,0\"\u003e\u003cb data-path-to-node=\"20,2,1,0,0\" data-index-in-node=\"0\"\u003e3RT2916-4MA10:\u003c\/b\u003e Sealable clear cover. Prevents technicians from manually depressing the armature, a critical safety protocol in the elevator trade.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-path-to-node=\"21\"\u003e\n\u003ch3 data-path-to-node=\"22\"\u003e\u003cb data-path-to-node=\"22\" data-index-in-node=\"0\"\u003eField Maintenance Tips\u003c\/b\u003e\u003c\/h3\u003e\n\u003cul data-path-to-node=\"23\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"23,0,0\"\u003e\u003cb data-path-to-node=\"23,0,0\" data-index-in-node=\"0\"\u003eCoil Replacement:\u003c\/b\u003e If the coil burns out, you can replace it without removing the entire contactor. The replacement 120V coil part number is \u003cb data-path-to-node=\"23,0,0\" data-index-in-node=\"140\"\u003e3RT2926-5AK61\u003c\/b\u003e.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"23,1,0\"\u003e\u003cb data-path-to-node=\"23,1,0\" data-index-in-node=\"0\"\u003eContact Monitoring:\u003c\/b\u003e Since this contactor switches \u003cb data-path-to-node=\"23,1,0\" data-index-in-node=\"50\"\u003e38A\u003c\/b\u003e, the internal contacts will eventually pit or \"weld\" under heavy use. If the elevator is \"stalling\" or single-phasing, check the continuity across the three main poles while the contactor is energized.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"23,2,0\"\u003e\u003cb data-path-to-node=\"23,2,0\" data-index-in-node=\"0\"\u003eTorque Requirements:\u003c\/b\u003e In high-vibration elevator rooms, screw terminals can loosen. For the S0 frame, ensure power leads are torqued to \u003cb data-path-to-node=\"23,2,0\" data-index-in-node=\"135\"\u003e2.0–2.5 Nm\u003c\/b\u003e to prevent terminal melt-down.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"R.A.M. Parts","offers":[{"title":"Default Title","offer_id":48122545602712,"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_5afd47c5-94af-4fa3-8ca9-7b0227cfc41d.jpg?v=1771366409","url":"https:\/\/parts4rem.ca\/products\/siemens-3rt2028-1ak60","provider":"Parts4REM","version":"1.0","type":"link"}