{"product_id":"1746-ow4-allen-bradley-slc-500-series-relay-output-module","title":"1746-OW4 Allen-Bradley SLC 500 Series Relay Output Module","description":"\u003cp\u003eThe \u003cstrong\u003eAllen-Bradley 1746-OW4\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003e1746-OW4\u003c\/strong\u003e Relay Output Module, operates as a dedicated hardware component for electromechanical load switching within SLC 500 rack chassis environments.\u003c\/p\u003e\n\u003ch3\u003eChannel Configuration \u0026amp; Part Cross-Reference\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrimary Part Number\u003c\/strong\u003e: 1746-OW4\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAlternate Catalog Designations\u003c\/strong\u003e: 1746-0W4, 1746-OW4\/A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Platform\u003c\/strong\u003e: SLC 500\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutput Channel Count\u003c\/strong\u003e: 4 Points\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContact Configuration\u003c\/strong\u003e: Normally Open (N.O.) Relay Contacts\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperating Signal Voltage\u003c\/strong\u003e: 5-265 VAC or 5-125 VDC\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eElectrical Ratings \u0026amp; Physical Specifications\u003c\/h3\u003e\n\u003cfigure\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003e1746-OW4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eAllen-Bradley\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.3 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShipping Dimensions\u003c\/td\u003e\n\u003ctd\u003e12.7 x 5.1 x 15.2 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Type\u003c\/td\u003e\n\u003ctd\u003eRelay Output Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e5-265 VAC \/ 5-125 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eContinuous Current \/ Output\u003c\/td\u003e\n\u003ctd\u003e1.5 A at 120 VAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e0 to 60 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003eDetermined by Backplane Current Draw \u0026amp; Relay Coil Energization\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTariff Code\u003c\/td\u003e\n\u003ctd\u003e8537101190\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eDeterministic Network Sync \u0026amp; Backplane Velocity\u003c\/h3\u003e\n\u003cp\u003eThe 1746-OW4 receives binary discrete outputs from the SLC 500 processor across the chassis backplane bus, driving isolated mechanical relay contact sets. High backplane bus communication velocity preserves time-critical task execution across EtherNet\/IP deterministic networks, supporting optimized I\/O density scaling and maintaining firmware flash compatibility across legacy and current control platforms.\u003c\/p\u003e\n\u003ch3\u003eShipment Package Inventory\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1 x Allen-Bradley 1746-OW4 Electromechanical Output Module\u003c\/li\u003e\n\u003cli\u003e1 x Terminal Block \u0026amp; Hardware Wiring Sheet\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCabinet Installation \u0026amp; Terminal Wiring Procedures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eChassis Slot Insertion\u003c\/strong\u003e: Align the circuit board module with upper and lower card guides of the SLC 500 chassis, sliding inward until side latches firmly click.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerminal Connector Termination\u003c\/strong\u003e: Wire field power and load lines to designated screw terminals, ensuring proper insulation strip length.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInductive Load Suppression\u003c\/strong\u003e: Install MOV or RC surge suppressors across external inductive AC loads to prevent contact arcing and back-EMF noise.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What voltage range is supported by the 1746-OW4 contact outputs?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe relay contacts handle operating voltages from 5 to 265 VAC and 5 to 125 VDC.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is the maximum continuous current rating per point at 120 VAC?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eEach normally open relay output channel is rated for up to 1.5 A continuous current at 120 VAC.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How many output points are available on the 1746-OW4 module?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe hardware provides 4 individually wired, normally open electromechanical relay outputs.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What alternate catalog numbers refer to the 1746-OW4 hardware?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eCross-reference part numbers include 1746-0W4 and revision series 1746-OW4\/A.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can AC and DC loads be switched simultaneously on different channels?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes, channels with isolated common terminals can control distinct AC or DC voltage loops.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does the module require external surge suppression for inductive loads?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eExternal suppression networks (RC snubbers or suppression diodes) are recommended to extend contact life.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is module insertion allowed while the SLC 500 chassis is powered?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003ePower down the SLC 500 chassis backplane power supply before removing or inserting I\/O modules.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is the physical shipping weight of the 1746-OW4 unit?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe net shipping weight of the packaged 1746-OW4 relay output module is 0.3 kg.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":46066408554669,"sku":"1746-OW4","price":88.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0733\/1613\/9181\/files\/1746-OW4-0.jpg?v=1785903623","url":"https:\/\/www.maxwellplc.com\/ru\/products\/1746-ow4-allen-bradley-slc-500-series-relay-output-module","provider":"Maxwell PLC Ltd","version":"1.0","type":"link"}