{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3SF3257-6XX30-0BA2","brand":"Siemens","brandSlug":"siemens","productSlug":"3SF3257-6XX30-0BA2","canonicalUrl":"https://aoctrl.com/siemens/3SF3257-6XX30-0BA2","factsUrl":"https://aoctrl.com/api/mcp/products/3SF3257-6XX30-0BA2","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 3SF3257-6XX30-0BA2, communication-capable position switch, mechanical active principle, AS-i insulation displacement connection, 1 NC, IP65, block housing EN 50047.","salesMarkdown":"The Siemens 3SF3257-6XX30-0BA2 is a communication-capable position switch with an integrated AS-i adapter, designed for machine guarding and position detection in automated lines. It uses a mechanical active principle with positive opening — meaning the NC contact is physically forced open when the actuator is released, which is the standard safety requirement for interlock circuits per IEC 60947-5-1. That positive-opening feature (confirmed on this part) makes it suitable for safety-related limit switching where a welded contact cannot be allowed to mask the open state. The housing is a molded-plastic block design per EN 50047, fastened with screws. The separate actuator means the switch body mounts to the frame and the actuator goes on the guard door or moving part; the two pieces are ordered separately, so make sure you have the actuator in the same BOM line. ## AS-i connection and contact arrangement Electrical connection is via AS-i insulation displacement method — the flat cable is pressed into the connector without stripping individual wires. This is the standard AS-i fieldbus termination; the switch sits on the AS-i network as a slave device, reporting its NC contact state back to the master. The contact complement is one NC auxiliary contact, zero NO contacts, so this switch is intended for a single safety or status channel. If you need a dual-channel (NC + NO) feedback loop, this is not the variant — look for a 1NC+1NO version in the same 3SF3 family. The switch operates in ambient temperatures from -25 to +60 °C, covering most indoor industrial environments and cold storage areas. The molded-plastic housing and IP65 rating hold up in wet or dusty conditions typical of conveyor systems, packaging machines, and material handling cells.","metaTitle":"Siemens 3SF3257-6XX30-0BA2 AS-i Position Switch, 1NC, IP65","metaDescription":"Siemens 3SF3257-6XX30-0BA2 communication-capable position switch with AS-i adapter, 1 NC contact, positive opening, IP65. Current lifecycle stage. Available to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Safety Interlock Switches"],"specifications":{"lifecycle_stage":"current","Active Principle":"mechanical","Fastening Method":"screw fixing","Product Designation":"communication-capable position switch","protection class IP":"IP65","Design Of The Housing":"block, EN 50047","Material Of The Enclosure":"molded-plastic","Type Of Electrical Connection":"AS-i insulation displacement method","Design Of The Actuating Element":"separate actuator","Design Of The Switching Function":"positive opening","Product Function Positive Opening":"Yes","Ambient Temperature During Operation":"-25 ... +60 °C","reference code according to IEC 81346-2":"B","Design Of The Housing According To Standard":"Yes","number of NC contacts for auxiliary contacts":"1","number of NO contacts for auxiliary contacts":"0"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://aoctrl.com/api/mcp/products/3SF3257-6XX30-0BA2/alternatives.json"},"ai":{"faq":[{"question":"What is the IP rating and what does it mean for installation?","answer":"This switch is rated IP65, meaning it is dust-tight and protected against low-pressure water jets. It is suitable for washdown areas but not for high-pressure spray or submersion."},{"question":"Does this switch have a positive opening NC contact for safety circuits?","answer":"Yes, the switching function is positive opening, and the product function is confirmed as positive opening. The NC contact is mechanically forced open when the actuator is released, meeting the requirement for safety interlock circuits."},{"question":"Where can I buy 3SF3257-6XX30-0BA2 and what is the price?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a line-item price and lead time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3SF3257-6XX30-0BA2","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/3SF3257-6XX30-0BA2 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}}