{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3SF5874-4EB","brand":"Siemens","brandSlug":"siemens","productSlug":"3SF5874-4EB","canonicalUrl":"https://aoctrl.com/siemens/3SF5874-4EB","factsUrl":"https://aoctrl.com/api/mcp/products/3SF5874-4EB","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 3SF5874-4EB AS-Interface front panel module, slave 4I/4O, IP65, 30 V DC, 22 mm mounting diameter, rectangular enclosure, wedge-base socket design, positive-opening contacts.","salesMarkdown":"The Siemens 3SF5874-4EB is an AS-Interface front panel module — a slave with four inputs and four outputs (4I/4O) that mounts in a standard 22 mm round panel cutout. It's built for control stations where you need illuminated pushbuttons and status lamps tied directly to the AS-i bus, no separate I/O block. The IP65 rating means it handles washdown and dust on the panel face, so it's a fit for food, beverage, or any wet-area line where you don't want a separate enclosure. The module is rated at 30 V DC (the AS-i bus voltage) and carries positive-opening contacts — that's the mechanical guarantee that the NC contact opens even if the spring breaks, which matters for safety circuits where you need a reliable off-state. The four lamp holders use a wedge-base socket design, so bulb swaps are tool-less. The front ring is included, and the actuator elements are clear illuminated pushbuttons, four of them, with black labels. The housing is rectangular plastic, fastened vertically or horizontally, and the slave type is 4I/4O — four inputs for pushbuttons or limit switches, four outputs for indicator lamps or small solenoids. ## Physical dimensions and mounting The module measures 200 mm tall, 45 mm wide, and 54.5 mm deep — that's the depth behind the panel. The 22 mm mounting diameter is the standard hole size for European pushbutton stations. The enclosure mounts vertically or horizontally, and the rectangular front shape gives you four illuminated pushbuttons in a single cutout. No backing plate needed.","metaTitle":"3SF5874-4EB AS-Interface front panel module, 4I/4O, IP65, 30","metaDescription":"3SF5874-4EB AS-Interface front panel module with 4 inputs / 4 outputs, IP65, 30 V DC. Current production. Sourced to order — request RFQ for availability and pricing.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Safety Interlock Switches"],"specifications":{"Depth":"54.5 mm","Width":"45 mm","Height":"200 mm","Socket Design":"Wedge base","During Storage":"-40 ... +80 °C","of AS-i slaves":"Front mounting","lifecycle_stage":"current","During Operation":"-25 ... +70 °C","Number Of Labels":"4","Positive Opening":"Yes","Product Function":"miscellaneous","Mounting Diameter":"22 mm","at DC rated value":"30 V","Color Of The Label":"Black","protection class IP":"IP65","Design Of The Housing":"AS-Interface front panel module","Number Of Lampholders":"4","number of AS-i slaves":"1","EMERGENCY OFF function":"No","Material Of The Holder":"Plastic","Color Of The Front Ring":"black","EMERGENCY STOP function":"No","Design Of The Slave Type":"Slave, 4I/4O","Number Of Backing Plates":"0","Number Of Command Points":"4","Type Of Unlocking Device":"without","Material Of The Enclosure":"plastic","Material Of The Front Ring":"plastic","Number Of Switching Elements":"5","Product Component Front Ring":"Yes","Shape Of The Enclosure Front":"rectangular","Substance Prohibitance (Date)":"05/28/2009","Color Of The Actuating Element":"A = clear / B = clear / C = clear / D = clear","Product Component Light Source":"Yes","Color Of The Enclosure Top Part":"black","Design Of The Actuating Element":"Illuminated pushbutton","Fastening Method Of The Enclosure":"Vertical / horizontal","Material Of The Actuating Element":"plastic","Shape Of The Installation Opening":"round","Product Component Protective Collar":"No","Product Extension Optional Light Source":"No","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":"Front mounting","Type Of Electrical Connection On Enclosure":"With insulation-displacement terminal","number of CO contacts for auxiliary contacts":"0","number of NC contacts for auxiliary contacts":"2","number of NO contacts for auxiliary contacts":"4","Tightening Torque Of The Screws In The Bracket":"1 ... 1.2 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":"DC"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://aoctrl.com/api/mcp/products/3SF5874-4EB/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3SF5874-4EB and how do I get a price?","answer":"The 3SF5874-4EB is sourced to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time."},{"question":"What is the depth of 3SF5874-4EB?","answer":"The depth behind the panel is 54.5 mm."},{"question":"What is the width of 3SF5874-4EB?","answer":"The width is 45 mm."},{"question":"Will 3SF5874-4EB drop into a panel specified around 3RH6140-1BF40 without rewiring?","answer":"No — the 3RH6140-1BF40 is a contactor relay on a DIN rail, not a 22 mm panel-mount AS-i module. The 3SF5874-4EB requires a 22 mm round cutout and AS-i bus wiring, so it cannot drop into the same footprint or wiring plan without significant rework."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3SF5874-4EB","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/3SF5874-4EB 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}}