{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3SF5874-4EJ","brand":"Siemens","brandSlug":"siemens","productSlug":"3SF5874-4EJ","canonicalUrl":"https://aoctrl.com/siemens/3SF5874-4EJ","factsUrl":"https://aoctrl.com/api/mcp/products/3SF5874-4EJ","rawCanonicalId":null},"summary":{"shortDescription":"Siemens AS-Interface front panel module, 3SF5874-4EJ, IP65, 1 slave with 4 inputs / 4 outputs, 22 mm round mounting, plastic enclosure, wedge-base socket design.","salesMarkdown":"The Siemens 3SF5874-4EJ is an AS-Interface front panel module designed for control panels where you need local I/O points without running individual sensor cables back to the PLC. It carries one AS-i slave with four inputs and four outputs (4I/4O), all routed through a single two-wire AS-i bus cable, which simplifies field wiring and reduces termination points inside the enclosure. Rated IP65, the module is suited for environments where occasional washdown or dust ingress is a concern — think food packaging lines, washdown zones, or outdoor cabinets where condensation is routine. The plastic enclosure and 22 mm round mounting opening match standard panel cutouts for pilot devices, so it drops into existing pushbutton/indicator holes without extra machining. Its 54.5 mm depth leaves room behind the panel for the AS-i cable and insulation-displacement terminals, while the 200 mm height and 45 mm width keep the footprint tight on a crowded subplate. ## Wiring & integration Connection is via insulation-displacement terminals (IDC) — strip the AS-i flat cable, press it into the slot, and the contact cuts through the jacket automatically. No screw terminals, no ferrule crimping. The module can be mounted vertically or horizontally, depending on panel layout. The module ships with two labels (black) for marking the four command points. The wedge-base socket design and the four lampholders indicate this module is built to accommodate illuminated pushbuttons or pilot lights — the light source is optional and field-installable. No positive opening contacts and no emergency stop function, so it's for standard signaling and control, not safety-rated stop circuits.","metaTitle":"3SF5874-4EJ AS-Interface front panel module, IP65, 4I/4O sla","metaDescription":"Siemens 3SF5874-4EJ AS-Interface front panel module with 1 slave, 4 inputs/4 outputs, IP65, 22 mm mounting. Current lifecycle. Available to order. Get a quote.","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":"2","Positive Opening":"No","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","EMERGENCY STOP function":"No","Design Of The Slave Type":"Slave, 4I/4O","Number Of Backing Plates":"0","Number Of Command Points":"4","Material Of The Enclosure":"plastic","Number Of Switching Elements":"4","Product Component Front Ring":"No","Shape Of The Enclosure Front":"rectangular","Substance Prohibitance (Date)":"05/28/2009","Product Component Light Source":"No","Color Of The Enclosure Top Part":"black","Fastening Method Of The Enclosure":"Vertical / horizontal","Shape Of The Installation Opening":"round","Product Component Protective Collar":"No","Product Extension Optional Light Source":"Yes","Type Of Voltage Of The Operating Voltage":"DC","Delivery State Pre-Wired On Strip Terminal":"No","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":"0","number of NO contacts for auxiliary contacts":"4","vibration resistance according to IEC 60068-2-6":"20 ... 200 Hz: 5g"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://aoctrl.com/api/mcp/products/3SF5874-4EJ/alternatives.json"},"ai":{"faq":[{"question":"What is the 3SF5874-4EJ's IP rating and where can it be used?","answer":"Rated IP65, so it handles dust ingress and low-pressure water jets — suitable for washdown areas, outdoor cabinets, or food processing environments where moisture is present."},{"question":"Does the 3SF5874-4EJ have an emergency stop function?","answer":"No. It is not rated for emergency stop or emergency off functions; it is a standard AS-i I/O module for control and signaling only."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3SF5874-4EJ","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/3SF5874-4EJ 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}}