{"product_id":"potter-brumfield-rt314024f-power-relay-4-pack","title":"Potter \u0026 Brumfield RT314024F Power Relay (4 pack)","description":"\u003cp\u003eThe \u003cb\u003ePotter \u0026amp; Brumfield RT314024F\u003c\/b\u003e (a division of \u003cb\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\u003e\u003cb\u003eCore Specifications\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eManufacturer:\u003c\/b\u003e Potter \u0026amp; Brumfield (TE Connectivity)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003ePart Number:\u003c\/b\u003e RT314024F (Successor to the Schrack RT series)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eNumber of Poles:\u003c\/b\u003e \u003cb\u003e1-Pole (SPDT \/ 1 Form C)\u003c\/b\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eCoil Voltage:\u003c\/b\u003e 24V DC\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eContact Rating:\u003c\/b\u003e 16A @ 250V AC\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eMounting:\u003c\/b\u003e PCB (Through-hole)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eContact Material:\u003c\/b\u003e Silver Nickel (AgNi 90\/10)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eCoil Resistance:\u003c\/b\u003e \u003cspan class=\"math-inline\"\u003e$1,440 \\Omega$\u003c\/span\u003e (Nominal)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cb\u003eElevator Logic\u003c\/b\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\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\u003e\u003cb\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\u003e\u003cb\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\u003e\u003cb\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\u003e\n\u003ch3\u003e\u003cb\u003eAccessories\u003c\/b\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\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\u003e\u003cb\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\u003e\u003cb\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\u003e\u003cb\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\u003e\n\u003ch3\u003e\u003cb\u003eMaintenance \u0026amp; Code\u003c\/b\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eB44 Safety Limitations:\u003c\/b\u003e Under \u003cb\u003eCanadian Elevator Code (B44)\u003c\/b\u003e, this is \u003cb\u003enot\u003c\/b\u003e a force-guided safety relay. It must \u003cb\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\u003e\u003cb\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\"\u003e$0.5 \\Omega$\u003c\/span\u003e).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\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\"\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\u003e\u003cb\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":"Parts4REM","offers":[{"title":"Default Title","offer_id":49702363660440,"sku":null,"price":0.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/4369\/5000\/files\/rt3_1.jpg?v=1786995448","url":"https:\/\/parts4rem.ca\/products\/potter-brumfield-rt314024f-power-relay-4-pack","provider":"Parts4REM","version":"1.0","type":"link"}