{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RK1903-3BA02","brand":"Siemens","brandSlug":"siemens","productSlug":"3RK1903-3BA02","canonicalUrl":"https://aoctrl.com/siemens/3RK1903-3BA02","factsUrl":"https://aoctrl.com/api/mcp/products/3RK1903-3BA02","rawCanonicalId":null},"summary":{"shortDescription":"Siemens Safety Module PROFIsafe, PM-D F PROFISAFE, 3RK1903-3BA02, SIL CL 3, Cat. 4, 20.4–28.8 V DC, 30 x 196.5 x 117.5 mm.","salesMarkdown":"## PROFIsafe power module for fail-safe motor starters The Siemens 3RK1903-3BA02 is a PM-D F PROFISAFE power module designed for fail-safe motor starter applications, providing PROFIsafe communication for PROFIBUS or PROFINET networks. It plugs onto the TM-PF30 S47-F1 base for an F-frequency converter, delivering power and safety shutdown to six groups. Rated SIL CL 3 per IEC 61508 and Category 4 per EN ISO 13849-1, with a safe failure fraction of 99 % and average diagnostic coverage of 99 %, it meets the highest integrity levels for guarding and hazard-zone safety circuits. ## Supply and safe state Control supply voltage is 20.4 to 28.8 V DC, so it runs on a standard 24 V DC panel supply with tolerance for brownout. The safe state is load circuit open — when the safety function is triggered, the module opens the load path to the connected motor starters. No short-circuit protection is built in; upstream fusing or a circuit breaker is required per the branch circuit. ## Physical fit and compliance Width is 30 mm, height 196.5 mm, depth 117.5 mm. The substance prohibitance date of 05/01/2012 indicates RoHS compliance from that date forward.","metaTitle":"Siemens 3RK1903-3BA02 Safety Module PROFIsafe, SIL CL 3","metaDescription":"Siemens 3RK1903-3BA02 PM-D F PROFISAFE power module for fail-safe motor starters. SIL CL 3, Cat. 4, 20.4–28.8 V DC. Current production. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Remote I/O & Fieldbus Modules"],"specifications":{"Depth":"117.5 mm","Width":"30 mm","Height":"196.5 mm","Safe State":"Load circuit open","Rated Value":"20.4 ... 28.8 V","lifecycle_stage":"current","Bus Communication":"Yes","Product Brand Name":"Safety Module PROFIsafe","Product Designation":"PM-D F PROFISAFE","Design Of The Product":"for safety circuits","according to IEC 61508":"SIL CL 3","Short Circuit Protection":"No","Safe failure fraction (SFF)":"99 %","Substance Prohibitance (Date)":"05/01/2012","category according to EN ISO 13849-1":"4","average diagnostic coverage level (DCavg)":"99 %","safety device type according to IEC 61508-2":"Type B","Type Of Voltage Of The Control Supply Voltage":"DC","hardware fault tolerance according to IEC 61508":"1","PFHD with high demand rate according to EN 62061":"1E-13 1/h","SIL Claim Limit (subsystem) according to EN 62061":"3"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/2506c84bc50fd54eb200b0e325c9c833.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=437503&mlfb=3RK1903-3BA02","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RK1903-3BA02/alternatives.json"},"ai":{"faq":[{"question":"What safety integrity levels does 3RK1903-3BA02 meet?","answer":"It is rated SIL CL 3 per IEC 61508, Category 4 per EN ISO 13849-1, and SIL Claim Limit 3 per EN 62061, with a PFHD of 1E-13 1/h."},{"question":"What is the supply voltage range for this module?","answer":"The control supply voltage is rated 20.4 to 28.8 V DC, so it operates on a standard 24 V DC supply with tolerance for dips."},{"question":"Where can I buy 3RK1903-3BA02 and how is it quoted?","answer":"This module is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"What compliance documentation is available for 3RK1903-3BA02?","answer":"The module carries a substance prohibitance date of 05/01/2012, indicating RoHS compliance from that date. It is designed per IEC 61508, EN ISO 13849-1, and EN 62061 safety standards."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RK1903-3BA02","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/3RK1903-3BA02 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}}