{"product_id":"allen-bradley-20-750-s3-sto-module-reliable-delivery","title":"20-750-S3 | Allen-Bradley integrated safety module, STO, for PowerFlex 755\/755T drives","description":"\u003ch4\u003eDescription \u003c\/h4\u003e\n\u003cp data-end=\"451\" data-start=\"0\"\u003eThe Allen-Bradley 20-750-S3 is an integrated safety module designed for PowerFlex 755 and 755T drives. This part number supports Safe Torque Off (STO) functionality through both hardwired and networked safety configurations. Operating on 24 VDC inputs, it provides a reliable means of preventing unintended motor operation in industrial applications.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications \u003c\/h4\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNew\/Never Used Surplus\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAllen-Bradley\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCategory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSafety Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e20-750-S3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSubcategory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDrive Safety Accessories\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSeries\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePowerFlex 755\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCompatibility\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePowerFlex 755 \/ 755T drives\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSafety Feature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSafe Torque Off (STO)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHardwired STO\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNetworked STO\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e24 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCurrent sinking\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOn-State Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e11–30 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMinimum On-State Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3.3 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOn-State Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3.5 mA (typical)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaximum Off-State Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaximum Off-State Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1.5 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRecommended Conductor Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e28–18 AWG\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEnvironmental Protection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRequires IP54 enclosure or controlled environment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCertifications\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUL, CE, C-Tick, TÜV\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003e\u003c\/h4\u003e\n\u003ch4\u003eInformation About 20-750-S3\u003c\/h4\u003e\n\u003cp class=\"\" data-end=\"1074\" data-start=\"590\"\u003eThe 20-750-S3 belongs to the PowerFlex 755 safety accessory family and is engineered to provide STO capability directly within the drive system. It enables both hardwired and Ethernet-based STO commands, allowing integration with safety controllers for advanced machine safeguarding. The module uses current-sinking 24 VDC inputs and supports compliant safety operation when installed in an appropriately protected enclosure. Typical applications include machinery requiring controlled shutdown of motor torque during maintenance, service, or safety-related events without removing input power to the drive.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong data-end=\"1102\" data-start=\"1085\"\u003eKey Features:\u003cbr\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSafe Torque Off (STO): Prevents unintended motor torque output without removing power from the drive.\u003c\/li\u003e\n\u003cli\u003eDual STO Options: Supports both hardwired and networked STO activation.\u003c\/li\u003e\n\u003cli\u003ePowerFlex 755\/755T Compatibility: Integrates directly with designated drive platforms.\u003c\/li\u003e\n\u003cli\u003e24 VDC Input Supply: Requires PELV\/SELV-rated safety power.\u003c\/li\u003e\n\u003cli\u003eCurrent-Sinking Inputs: Provides consistent signal detection for safety circuits.\u003c\/li\u003e\n\u003cli\u003eWide On-State Voltage Range: Operates from 11–30 VDC with stable current thresholds.\u003c\/li\u003e\n\u003cli\u003eCertified Safety Compliance: UL, CE, C-Tick, and TÜV approvals support global use.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe 20-750-S3 delivers the reliability and precision required for high-integrity safety control in modern drive systems.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":47272328331562,"sku":"20-750-S3","price":599.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/0392\/4266\/files\/20-750-S3.jpg?v=1704200172","url":"https:\/\/iqelectro.com\/products\/allen-bradley-20-750-s3-sto-module-reliable-delivery","provider":"IQElectro","version":"1.0","type":"link"}