{"product_id":"rt-3140-24-f-4-pack","title":"Potter \u0026 Brumfield RT314024F Power Relay (4 pack)","description":"\u003cp data-path-to-node=\"1\"\u003eThe \u003cb data-path-to-node=\"1\" data-index-in-node=\"4\"\u003ePotter \u0026amp; Brumfield RT314024F\u003c\/b\u003e (a division of \u003cb data-path-to-node=\"1\" data-index-in-node=\"48\"\u003eTE Connectivity\u003c\/b\u003e) is a compact, high-capacity \"Miniature Power PCB Relay.\" In the elevator industry, this specific 24V DC relay is a standard component soldered onto controller mainboards, car-top interface cards, and door operator boards (such as those from GAL or ECI) to bridge low-power logic with high-power field devices.\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\"\u003eManufacturer:\u003c\/b\u003e Potter \u0026amp; Brumfield (TE Connectivity)\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\"\u003ePart Number:\u003c\/b\u003e RT314024F (Successor to the Schrack RT series)\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\"\u003eNumber of Poles:\u003c\/b\u003e \u003cb data-path-to-node=\"3,2,0\" data-index-in-node=\"17\"\u003e1-Pole (SPDT \/ 1 Form C)\u003c\/b\u003e\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\"\u003eCoil Voltage:\u003c\/b\u003e 24V DC\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\"\u003eContact Rating:\u003c\/b\u003e 16A @ 250V AC\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\"\u003eMounting:\u003c\/b\u003e PCB (Through-hole)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"3,6,0\"\u003e\u003cb data-path-to-node=\"3,6,0\" data-index-in-node=\"0\"\u003eContact Material:\u003c\/b\u003e Silver Nickel (AgNi 90\/10)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"3,7,0\"\u003e\u003cb data-path-to-node=\"3,7,0\" data-index-in-node=\"0\"\u003eCoil Resistance:\u003c\/b\u003e \u003cspan class=\"math-inline\" data-math=\"1,440 \\Omega\" data-index-in-node=\"17\"\u003e$1,440 \\Omega$\u003c\/span\u003e (Nominal)\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\"\u003eElevator Logic\u003c\/b\u003e\u003c\/h3\u003e\n\u003cul data-path-to-node=\"6\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"6,0,0\"\u003e\u003cb data-path-to-node=\"6,0,0\" data-index-in-node=\"0\"\u003eOutput Interface:\u003c\/b\u003e Acts as the primary switching point for the microprocessor to engage larger 110V or 24V contactors, such as the Main Run or Directional contactors.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"6,1,0\"\u003e\u003cb data-path-to-node=\"6,1,0\" data-index-in-node=\"0\"\u003eDoor Operator Commands:\u003c\/b\u003e Integrated into door boards to execute \"Open,\" \"Close,\" and \"Nudging\" commands by switching the pilot voltage to the motor drive.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"6,2,0\"\u003e\u003cb data-path-to-node=\"6,2,0\" data-index-in-node=\"0\"\u003eBrake Logic:\u003c\/b\u003e Often used in the brake-holding circuit to signal the brake power supply to drop to a lower \"holding\" voltage once the car is in motion.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"6,3,0\"\u003e\u003cb data-path-to-node=\"6,3,0\" data-index-in-node=\"0\"\u003eEmergency Power (EFO):\u003c\/b\u003e Swings the signal to the \"Fire Service\" or \"Emergency Power\" indicator lamps on the COPs and hall stations.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-path-to-node=\"7\"\u003e\n\u003ch3 data-path-to-node=\"8\"\u003e\u003cb data-path-to-node=\"8\" data-index-in-node=\"0\"\u003eAccessories\u003c\/b\u003e\u003c\/h3\u003e\n\u003cul data-path-to-node=\"9\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"9,0,0\"\u003e\u003cb data-path-to-node=\"9,0,0\" data-index-in-node=\"0\"\u003eRT78726 Socket:\u003c\/b\u003e A DIN-rail mountable socket that allows this PCB relay to be used as a plug-in component for easier field replacement.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"9,1,0\"\u003e\u003cb data-path-to-node=\"9,1,0\" data-index-in-node=\"0\"\u003ePlastic Retaining Clip:\u003c\/b\u003e A \"Relay-to-Socket\" lock that prevents the unit from vibrating loose, which is critical for car-top stations.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"9,2,0\"\u003e\u003cb data-path-to-node=\"9,2,0\" data-index-in-node=\"0\"\u003eLED\/Protection Module:\u003c\/b\u003e Plug-in modules for the socket that provide a visual \"Power On\" LED and a flyback diode to protect the 24V DC driver circuit.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"9,3,0\"\u003e\u003cb data-path-to-node=\"9,3,0\" data-index-in-node=\"0\"\u003eMarking Tags:\u003c\/b\u003e Snap-on white plastic labels used to identify the relay's specific software function (e.g., \"DO\" for Door Open).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-path-to-node=\"10\"\u003e\n\u003ch3 data-path-to-node=\"11\"\u003e\u003cb data-path-to-node=\"11\" data-index-in-node=\"0\"\u003eMaintenance \u0026amp; Code\u003c\/b\u003e\u003c\/h3\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\"\u003eB44 Safety Limitations:\u003c\/b\u003e Under \u003cb data-path-to-node=\"12,0,0\" data-index-in-node=\"30\"\u003eCanadian Elevator Code (B44)\u003c\/b\u003e, this is \u003cb data-path-to-node=\"12,0,0\" data-index-in-node=\"68\"\u003enot\u003c\/b\u003e a force-guided safety relay. It must \u003cb data-path-to-node=\"12,0,0\" data-index-in-node=\"109\"\u003enever\u003c\/b\u003e be used as the primary monitoring device for safety-critical circuits (like the safety string or interlock verification) where a welded contact could bypass a safety function.\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\"\u003eContact Pitting:\u003c\/b\u003e While rated for 16A, high-cycle door operations will eventually cause carbon buildup on the silver-nickel contacts. If the relay \"clicks\" but the door fails to move, check for high resistance (over \u003cspan class=\"math-inline\" data-math=\"0.5 \\Omega\" data-index-in-node=\"215\"\u003e$0.5 \\Omega$\u003c\/span\u003e).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"12,2,0\"\u003e\u003cb data-path-to-node=\"12,2,0\" data-index-in-node=\"0\"\u003eVoltage Transients:\u003c\/b\u003e Ensure the 24V DC supply is filtered. Voltage spikes can damage the fine wire in the \u003cspan class=\"math-inline\" data-math=\"1,440 \\Omega\" data-index-in-node=\"105\"\u003e$1,440 \\Omega$\u003c\/span\u003e coil, leading to an \"Open\" coil failure and a dead output.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"12,3,0\"\u003e\u003cb data-path-to-node=\"12,3,0\" data-index-in-node=\"0\"\u003eFlux-Proof (F):\u003c\/b\u003e The \"F\" suffix indicates the relay is flux-proof for soldering. However, it is not hermetically sealed. In hydraulic machine rooms, ensure the relay is protected from oil mist, which can contaminate the contacts over time.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"R.A.M. Parts","offers":[{"title":"Default Title","offer_id":47582008443032,"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_c94509dc-1faf-45db-b884-7ee314277cbd.jpg?v=1772732783","url":"https:\/\/parts4rem.ca\/products\/rt-3140-24-f-4-pack","provider":"Parts4REM","version":"1.0","type":"link"}