{"product_id":"allen-bradley-1746-ow4-digital-relay-output","title":"Allen-Bradley 1746-OW4 SLC 500 Relay Output Module","description":"\u003cp\u003eThe Allen-Bradley 1746-OW4 is a specialized relay output module designed for use within the SLC 500 programmable controller system. This module provides four independent output channels, utilizing normally open (N.O.) relay contacts to interface with a variety of industrial field devices. It is engineered to support a broad range of operating voltages, making it a versatile component for discrete control applications where electrical isolation between the controller and the load is required.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eFour independent relay output channels.\u003c\/li\u003e\n\u003cli\u003eNormally Open (N.O.) contact configuration for reliable switching.\u003c\/li\u003e\n\u003cli\u003eWide operating voltage range supporting 5 to 265 VAC or 5 to 125 VDC.\u003c\/li\u003e\n\u003cli\u003eDesigned specifically for seamless integration into the Allen-Bradley SLC 500 chassis.\u003c\/li\u003e\n\u003cli\u003eRobust construction suitable for standard industrial control environments.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eApplications\u003c\/h3\u003e\u003cp\u003eThis module is typically employed in automation systems requiring the switching of varied AC or DC loads. Common applications include driving motor starters, solenoid valves, indicator lamps, and interposing relays where galvanic isolation is necessary to protect the PLC backplane from field-side electrical disturbances.\u003c\/p\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003ctable border=\"1\"\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer\u003c\/td\u003e\n\u003ctd\u003eAllen-Bradley\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel Number\u003c\/td\u003e\n\u003ctd\u003e1746-OW4\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\u003eNumber of Outputs\u003c\/td\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Type\u003c\/td\u003e\n\u003ctd\u003eN.O. Relay Contact\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage Range\u003c\/td\u003e\n\u003ctd\u003e5-265 VAC \/ 5-125 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCurrent Rating (120 VAC)\u003c\/td\u003e\n\u003ctd\u003e1.5 A per output\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eInstallation Guidelines\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eEnsure the SLC 500 chassis power is disconnected before installing or removing the module to prevent damage to the backplane.\u003c\/li\u003e\n\u003cli\u003eVerify that the module is fully seated in the intended slot and the retaining screws are tightened to ensure a secure connection.\u003c\/li\u003e\n\u003cli\u003eUse appropriate wire gauges and ensure all field wiring is routed away from high-voltage AC lines or sources of significant electromagnetic interference (EMI) to prevent signal noise.\u003c\/li\u003e\n\u003cli\u003eAlways adhere to local electrical codes regarding relay contact protection (e.g., using suppression devices for inductive loads) to extend the service life of the relay contacts.\u003c\/li\u003e\n\u003cli\u003eHandle the module using proper ESD-safe practices to prevent damage to internal electronic components.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eIs the 1746-OW4 compatible with all SLC 500 chassis?\u003c\/strong\u003e\u003cbr\u003eYes, this module is designed to fit into any standard I\/O slot of an Allen-Bradley SLC 500 chassis.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I use this module for high-current loads?\u003c\/strong\u003e\u003cbr\u003eThe module is rated for 1.5 A at 120 VAC. For loads exceeding this rating, it is recommended to use the 1746-OW4 to drive an external interposing relay or contactor.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat does the 'discontinued' status mean for my spare parts strategy?\u003c\/strong\u003e\u003cbr\u003eWhile the manufacturer has discontinued this part, it remains a critical component for maintaining legacy SLC 500 systems. We provide tested, reliable units to support the continued operation of your existing infrastructure.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":43989462089818,"sku":"1746-OW4","price":89.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0710\/5957\/0778\/files\/wm_1_9d225e2d-08c9-4f15-858a-ceceaccf1d70.jpg?v=1788291114","url":"https:\/\/www.spareoil.com\/products\/allen-bradley-1746-ow4-digital-relay-output","provider":"SpareOil Automation","version":"1.0","type":"link"}