{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3SF5402-1AB03","brand":"Siemens","brandSlug":"siemens","productSlug":"3SF5402-1AB03","canonicalUrl":"https://aoctrl.com/siemens/3SF5402-1AB03","factsUrl":"https://aoctrl.com/api/mcp/products/3SF5402-1AB03","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3SB3 series, AS-Interface F-adapter for EMERGENCY-OFF control device, 3SF5402-1AB03, 2 digital inputs, 1 digital output, screw-type terminals, IP20, front mounting.","salesMarkdown":"## What this adapter does on the line The Siemens 3SF5402-1AB03 is an AS-Interface F-adapter that sits between an emergency-stop mushroom-type actuator and the AS-i bus. It translates the E-stop pushbutton into two safe digital inputs on the network and provides one output for the LED status indicator in the actuator head. The screw-type terminals accept field wiring directly; no intermediate junction box needed. Rated Safety-Related 2, which means the adapter is designed for use in safety circuits up to SIL 2 / PL d per IEC 61508 / EN ISO 13849-1 when paired with a suitable safety monitor on the AS-i bus. The two digital inputs are intended for the dual-channel E-stop circuit; the single output drives the LED in the mushroom head to confirm the actuator state. This is a guarding component, not a standalone safety relay — the AS-i safety monitor handles the logic evaluation. Front mounting only — the adapter fastens to the panel cutout behind the 3SB3 mushroom actuator, not to DIN rail. Dimensions are 52 mm deep, 30 mm wide, 61 mm tall. IP20 means it lives inside the enclosure; the actuator itself carries the higher IP rating at the panel face. The screw terminals handle 0.2–2.5 mm² solid or stranded, same as the 3SB3 contact blocks.","metaTitle":"Siemens 3SF5402-1AB03 AS-Interface F-Adapter, IP20, 2DI/1DO","metaDescription":"Siemens 3SF5402-1AB03 AS-Interface F-adapter for emergency-stop mushroom actuator. 2 inputs, 1 output, screw terminals, IP20. Current lifecycle stage: active. Sourced to order agai","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Safety Interlock Switches"],"specifications":{"Depth":"52 mm","Width":"30 mm","Height":"61 mm","Safety-Related":"2","lifecycle_stage":"current","Fastening Method":"front mounting","Product Designation":"AS-Interface F-adapter for EMERGENCY-OFF control device SIRIUS 3SB3","protection class IP":"IP20","Number Of Digital Inputs":"2","Number Of Digital Outputs":"1","Substance Prohibitance (Date)":"07/01/2006","Ambient Temperature During Operation":"-25 ... +70 °C","reference code according to IEC 81346-2":"S","Type Of Electrical Connection For Auxiliary And Control Circuit":"screw-type terminals"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://aoctrl.com/api/mcp/products/3SF5402-1AB03/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3SF5402-1AB03","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/3SF5402-1AB03 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}}