{"product_id":"twddra16rt-schneider-electric-twido-relay-output-module","title":"TWDDRA16RT Schneider Electric Twido Relay Output Module","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003e\u003cspan style=\"color: #0056b3;\"\u003eTWDDRA16RT\u003c\/span\u003e\u003c\/strong\u003e is an electromechanical relay output expansion module engineered by \u003cstrong\u003e\u003cspan style=\"color: #0056b3;\"\u003eSchneider Electric\u003c\/span\u003e\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThis rugged component expands the physical channel capability of your \u003cstrong\u003e\u003cspan style=\"color: #0056b3;\"\u003eTwido\u003c\/span\u003e\u003c\/strong\u003e programmable logic controller platform.\u003c\/p\u003e\n\u003cp\u003eIt integrates 16 independent normally open (NO) relay contact points to switch diverse voltage types directly.\u003c\/p\u003e\n\u003cp\u003eUnlike electronic outputs, this mechanical module provides full electrical isolation between your system logic and external actuators.\u003c\/p\u003e\n\u003cp\u003eField wiring is managed via a heavy-duty removable screw terminal block to ensure reliable field maintenance.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eGlobal PLC Spare HUB's Insight\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eFrom a control engineering view, the \u003cstrong\u003e\u003cspan style=\"color: #0056b3;\"\u003eTWDDRA16RT\u003c\/span\u003e\u003c\/strong\u003e serves as an ideal interface for mixed-voltage environments.\u003c\/p\u003e\n\u003cp\u003eIt handles up to 2 A per individual channel, providing much higher current capacity than standard solid-state models.\u003c\/p\u003e\n\u003cp\u003eThe internal arrangement utilizes two isolated common returns, splitting the switching bus into two 8-point groups (Channels 0-7 and 8-15).\u003c\/p\u003e\n\u003cp\u003eThis dual-bus design allows engineers to run alternating current on one block and direct current on the other safely.\u003c\/p\u003e\n\u003cp\u003eLow contact resistance of under 40,000 µOhm minimizes thermal build-up inside high-density control enclosures.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eSystem Compatibility \u0026amp; Target Equipment\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThis relay unit interfaces seamlessly with the following industrial automation equipment:\u003c\/p\u003e\n\u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003e\u003cspan style=\"color: #0056b3;\"\u003eSchneider Electric\u003c\/span\u003e\u003c\/strong\u003e \u003cstrong\u003e\u003cspan style=\"color: #0056b3;\"\u003eTwido\u003c\/span\u003e\u003c\/strong\u003e compact and modular base controllers\u003c\/li\u003e\n    \u003cli\u003eHeavy industrial AC\/DC motor starters, contactors, and control relays\u003c\/li\u003e\n    \u003cli\u003eHigh-draw alarm horns, stack lights, and field notification sirens\u003c\/li\u003e\n    \u003cli\u003eFractional horsepower motor drives and motorized mixing valves\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eTechnical Specifications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e \u003cstrong\u003e\u003cspan style=\"color: #0056b3;\"\u003eSchneider Electric\u003c\/span\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e \u003cstrong\u003e\u003cspan style=\"color: #0056b3;\"\u003eTWDDRA16RT\u003c\/span\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eProduct Series:\u003c\/strong\u003e \u003cstrong\u003e\u003cspan style=\"color: #0056b3;\"\u003eTwido\u003c\/span\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eModule Type:\u003c\/strong\u003e Discrete mechanical relay output module\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eOutput Count:\u003c\/strong\u003e 16 independent contact channels\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eOutput Contact Form:\u003c\/strong\u003e 16 Normally Open (Form A NO) contacts\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eWiring Interface:\u003c\/strong\u003e Removable screw terminal block\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eIsolated Common Groups:\u003c\/strong\u003e 2 separate common points (COM0 for channels 0-7, COM1 for channels 8-15)\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMaximum Current Per Channel:\u003c\/strong\u003e 2 A maximum load\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMaximum Current Per Common Bus:\u003c\/strong\u003e 8 A total per common line\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eContact Resistance:\u003c\/strong\u003e ≤ 40000 µOhm across closed paths\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMechanical Response Time:\u003c\/strong\u003e ≤ 7 ms actuation delay\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eDielectric Isolation:\u003c\/strong\u003e 1500 Vrms for 1 minute between channel and internal logic circuitry\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eInternal Bus Current Demand:\u003c\/strong\u003e 45 mA at 5 V DC state 1 (all points active)\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eExternal System Current Demand:\u003c\/strong\u003e 75 mA at 24 V DC state 1 (all points active)\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eEnclosure Protection Level:\u003c\/strong\u003e IP20 finger-safe design\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eOperating Thermal Limit:\u003c\/strong\u003e 0 °C to 55 °C ambient air\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eModule Net Weight:\u003c\/strong\u003e 0.145 kg\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eCore Application Scenarios\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n    \u003cli\u003eMulti-voltage isolation panels for mechanical facility management\u003c\/li\u003e\n    \u003cli\u003eInterlocking circuit control lines within automated stamping presses\u003c\/li\u003e\n    \u003cli\u003eHVAC exhaust fan activation and damper motor control boards\u003c\/li\u003e\n    \u003cli\u003eWater distribution pumping systems requiring mixed AC and DC valve control\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eAdvanced Diagnostic Capabilities\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n    \u003cli\u003eThe controller software tracks the status of the internal pilot relay coils directly.\u003c\/li\u003e\n    \u003cli\u003e1500 Vrms galvanic isolation stops high-voltage field surges from blowing back into the processor bus.\u003c\/li\u003e\n    \u003cli\u003eThe removable block architecture enables immediate open-circuit testing via multi-meter probes without disconnecting wires.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eProcurement \u0026amp; Logistics Terms\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eProcessing Time:\u003c\/strong\u003e Worldwide dispatch guaranteed within 24 to 48 hours\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eLogistics Partners:\u003c\/strong\u003e Express premium tracking via FedEx, UPS, and DHL\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eWarranty Protection:\u003c\/strong\u003e Full 12-month complete hardware warranty coverage\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePackage Inclusions:\u003c\/strong\u003e One factory-packed, brand new \u003cstrong\u003e\u003cspan style=\"color: #0056b3;\"\u003eTWDDRA16RT\u003c\/span\u003e\u003c\/strong\u003e relay module with terminal header\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eEngineering Selection Guide\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n    \u003cli\u003eVerify that your switching frequency does not exceed the mechanical cycle limits of a standard relay.\u003c\/li\u003e\n    \u003cli\u003eChoose this model if your circuit demands flexible handling of concurrent AC and DC voltages on one block.\u003c\/li\u003e\n    \u003cli\u003eEnsure total load current across any single group of eight channels remains below the 8 A common threshold.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eFAQ\u003c\/strong\u003e\u003c\/h3\u003e\n\n\u003cp\u003e\u003cstrong\u003eCan I route an AC phase through common 0 and a DC voltage through common 1 simultaneously?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes, the internal groups are entirely separate, allowing isolated operation of mixed voltage networks up to the rating limit.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat is the benefit of the removable screw terminal block over fixed variants?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIt allows rapid replacement of the core module without needing to unscrew and re-label your field wires individually.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDoes this module require an external 24 V DC supply to drive the relays?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes, it draws 75 mA at 24 V DC externally to energize the internal mechanical coils when all outputs activate.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eHow should I protect the relay contacts when switching inductive motor starter coils?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eWe highly recommend installing external RC snubbers for AC loads or flyback diodes for DC loads to prevent arc wear.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat indicates a physical contact failure within the 16 NO channels?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIf the controller logic confirms an active output state but the field circuit remains open, the contact has reached end-of-life.\u003c\/p\u003e","brand":"Schneider Electric","offers":[{"title":"Default Title","offer_id":45247881511094,"sku":"TWDDRA16RT","price":142.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/TWDDRA16RT.jpg?v=1783504386","url":"https:\/\/www.plcsparehub.com\/products\/twddra16rt-schneider-electric-twido-relay-output-module","provider":"Global PLC Spare Hub","version":"1.0","type":"link"}