{"product_id":"allen-bradley-1746-ow4-slc-500-digital-contact-output-module","title":"Allen-Bradley 1746-OW4 SLC 500 Digital Contact Output Module","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\n\u003cp\u003eThe Allen-Bradley 1746-OW4 is a reliable digital contact output module designed specifically for the Allen-Bradley SLC 500 modular hardware platform. As part of the 1746 I\/O product family, this module provides discrete relay output capabilities to interface your controller with high-capacity actuators, control relays, motor starters, and pilot lights across various industrial automation environments.\u003c\/p\u003e\n\u003cp\u003eFeaturing isolated relay contacts, the 1746-OW4 accommodates both AC and DC load types, offering versatile signal switching flexibility for complex control panels. It features 4 normally open relay output points, allowing multi-voltage distribution across separate loads without sharing a common power bus. The robust construction ensures dependable operation within standard industrial temperature ranges and vibration tolerances typical of factory floors.\u003c\/p\u003e\n\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e4 discrete normally open relay output channels\u003c\/li\u003e\n  \u003cli\u003eSupports multi-voltage operations ranging from 5 to 265VAC and 5 to 125VDC\u003c\/li\u003e\n  \u003cli\u003eIndividual output isolation for flexible power zoning\u003c\/li\u003e\n  \u003cli\u003eCompatible with Allen-Bradley SLC 500 fixed and modular rack controllers\u003c\/li\u003e\n  \u003cli\u003eLow backplane current draw from 5VDC and 24VDC system supplies\u003c\/li\u003e\n  \u003cli\u003ePluggable terminal block for simplified field wiring and maintenance\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eIndustrial machinery and discrete manufacturing lines\u003c\/li\u003e\n  \u003cli\u003eHVAC control systems and building automation\u003c\/li\u003e\n  \u003cli\u003ePump and valve control panels\u003c\/li\u003e\n  \u003cli\u003eInterface between low-voltage controller logic and high-voltage field devices\u003c\/li\u003e\n  \u003cli\u003eMaterial handling and conveyor systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n      \u003cth\u003eParameter\u003c\/th\u003e\n      \u003cth\u003eSpecification\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eManufacturer\u003c\/td\u003e\n      \u003ctd\u003eAllen-Bradley \/ Rockwell Automation\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eProduct Line\u003c\/td\u003e\n      \u003ctd\u003eSLC 500 (1746 I\/O)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eCatalog 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\u003eDigital Contact (Relay) Output Module\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eNumber of Outputs\u003c\/td\u003e\n      \u003ctd\u003e4 Normally Open (Isolated)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eOperating Voltage Range\u003c\/td\u003e\n      \u003ctd\u003e5 to 265VAC, 5 to 125VDC\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eContinuous Current per Module\u003c\/td\u003e\n      \u003ctd\u003e8.0 A AC \/ 8.0 A DC max (per common)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eSignal Delay (Max Resistive Load)\u003c\/td\u003e\n      \u003ctd\u003eON: 10.0 ms \/ OFF: 10.0 ms\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eBackplane Current Consumption\u003c\/td\u003e\n      \u003ctd\u003e0.045 A @ 5VDC; 0.045 A @ 24VDC\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eOff-State Leakage Current\u003c\/td\u003e\n      \u003ctd\u003e0 mA max\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eMinimum Load Current\u003c\/td\u003e\n      \u003ctd\u003e10 mA @ 5VDC\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eCountry of Origin\u003c\/td\u003e\n      \u003ctd\u003eUnited States\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eConnections \/ Interfaces\u003c\/h3\u003e\n\u003cp\u003eThe module interfaces directly to the SLC 500 backplane via its integrated card-edge connector. Field wiring connects through a removable front-access terminal block, enabling quick module replacement without disturbing existing machine wiring. Each output point provides dedicated screw terminals for high-voltage or low-voltage load connections.\u003c\/p\u003e\n\n\u003ch3\u003eInstallation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eAlways disconnect all external AC and DC power sources from the module and backplane before installing or removing the unit.\u003c\/li\u003e\n  \u003cli\u003eInsert the 1746-OW4 securely into any available I\/O slot of an SLC 500 chassis.\u003c\/li\u003e\n  \u003cli\u003eEnsure the module latching mechanism is fully engaged to maintain reliable backplane communication and power continuity.\u003c\/li\u003e\n  \u003cli\u003eVerify that field device current loads do not exceed the per-contact or per-common continuous current ratings.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":53770305044843,"sku":"1746-OW4","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/1746-OW4_1200x1200_d0609047-aa88-48ff-90ab-1fc94187cc87.jpg?v=1787740778","url":"https:\/\/www.plcprotech.com\/products\/allen-bradley-1746-ow4-slc-500-digital-contact-output-module","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}