{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3SF5816-2DB20","brand":"Siemens","brandSlug":"siemens","productSlug":"3SF5816-2DB20","canonicalUrl":"https://aoctrl.com/siemens/3SF5816-2DB20","factsUrl":"https://aoctrl.com/api/mcp/products/3SF5816-2DB20","rawCanonicalId":null},"summary":{"shortDescription":"Siemens AS-Interface enclosure, emergency stop station, IP67, metal housing, A/B slave 4I/3O, pull-to-unlatch, 3SF5816-2DB20.","salesMarkdown":"The Siemens 3SF5816-2DB20 is an AS-Interface emergency stop station in a metal enclosure rated IP67, meaning it withstands washdown environments and dust ingress on the plant floor. It carries an EMERGENCY STOP function with a pull-to-unlatch mechanism — the operator must physically pull the actuator to reset, preventing accidental restart after a stop command. The slave is configured as an A/B slave with 4 inputs and 3 outputs, which gives it flexibility on both standard and extended addressing AS-i networks. The housing mounts vertically and accepts a 22 mm mounting diameter for the actuator — a standard panel cutout size. The enclosure measures 85 mm wide by 280 mm high by 65 mm deep. That 65 mm depth is the projection from the mounting surface — check clearance behind the panel if the AS-i cable duct or backplane components sit tight. The metal housing and metal front ring provide mechanical robustness for high-vibration areas like conveyor transfer points or press stations. Six command points with eight switching elements and three lampholders with integrated LED mean this station can combine the emergency stop with illuminated pushbuttons and indicator functions in one enclosure — reducing wiring points compared to separate components.","metaTitle":"Siemens 3SF5816-2DB20 AS-Interface Emergency Stop, IP67, A/B","metaDescription":"Siemens 3SF5816-2DB20 AS-Interface emergency stop station with IP67 metal enclosure, A/B slave 4I/3O, pull-to-unlatch. Current lifecycle stage. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Safety Interlock Switches"],"specifications":{"Depth":"65 mm","Width":"85 mm","Height":"280 mm","Socket Design":"integrated LED","During Storage":"-40 ... +80 °C","of AS-i slaves":"Floor mounting","lifecycle_stage":"current","During Operation":"-25 ... +70 °C","Number Of Labels":"6","Positive Opening":"Yes","Product Function":"miscellaneous","Mounting Diameter":"22 mm","at DC rated value":"30 V","Color Of The Label":"Black","protection class IP":"IP67","Design Of The Housing":"AS-Interface enclosure with standard equipment","Number Of Lampholders":"3","number of AS-i slaves":"1","EMERGENCY OFF function":"Yes","Material Of The Holder":"Metal","Color Of The Front Ring":"silver","EMERGENCY STOP function":"Yes","Design Of The Slave Type":"A/B slave 4I/3O","Number Of Backing Plates":"0","Number Of Command Points":"6","Type Of Unlocking Device":"pull-to-unlatch mechanism","Material Of The Enclosure":"metal","Material Of The Front Ring":"metal","Number Of Switching Elements":"8","Product Component Front Ring":"Yes","Shape Of The Enclosure Front":"rectangular","Substance Prohibitance (Date)":"05/28/2009","Color Of The Actuating Element":"A = red / B = white / C = yellow / E = green","Product Component Light Source":"Yes","Color Of The Enclosure Top Part":"grey","Design Of The Actuating Element":"EMERGENCY STOP mushroom pushbutton / illuminated pushbutton switch / dummy plug / illuminated pushbutton switch / without command device","Fastening Method Of The Enclosure":"Vertical","Material Of The Actuating Element":"plastic","Shape Of The Installation Opening":"round","Product Component Protective Collar":"No","Product Extension Optional Light Source":"Yes","reference code according to IEC 81346-2":"S","Type Of Voltage Of The Operating Voltage":"DC","Delivery State Pre-Wired On Strip Terminal":"Yes","Of Contact Blocks, Socket, And Accessories":"Floor mounting","Type Of Electrical Connection On Enclosure":"Cable gland, top","with low demand rate according to SN 31920":"20 %","with high demand rate according to SN 31920":"20 %","number of CO contacts for auxiliary contacts":"0","number of NC contacts for auxiliary contacts":"3","number of NO contacts for auxiliary contacts":"5","Tightening Torque Of The Screws In The Bracket":"1.4 ... 1.6 N·m","vibration resistance according to IEC 60068-2-6":"20 ... 200 Hz: 5g","Type Of Voltage Of The Supply Voltage Of The Light Source":"AC/DC"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://aoctrl.com/api/mcp/products/3SF5816-2DB20/alternatives.json"},"ai":{"faq":[{"question":"What is the IP rating and what does it mean for installation?","answer":"IP67 means the enclosure is dust-tight and protected against temporary immersion in water — suitable for washdown zones, outdoor installations, and dusty environments like sawmills or food processing lines."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3SF5816-2DB20","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/siemens/3SF5816-2DB20 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:15:54.622Z","lastPublished":"2026-09-02T08:15:54.622Z","indexable":true}}