{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RK1903-1BD00","brand":"Siemens","brandSlug":"siemens","productSlug":"3RK1903-1BD00","canonicalUrl":"https://aoctrl.com/siemens/3RK1903-1BD00","factsUrl":"https://aoctrl.com/api/mcp/products/3RK1903-1BD00","rawCanonicalId":null},"summary":{"shortDescription":"Siemens Local Safety Modules PM-D F3 safety module, 3RK1903-1BD00, for motor starter power extension, SIL 2 (IEC 61508), Cat. 3 (EN ISO 13849-1), 20.4-28.8 VDC, 30 mm wide, current lifecycle.","salesMarkdown":"The Siemens 3RK1903-1BD00 is a PM-D F3 fail-safe extension module designed for motor starter power distribution in safety circuits. It creates an additional potential group with a configurable delay of 0.5 to 30 seconds, and plugs onto the TM-PF30 base unit. The module is rated for a control supply voltage of 20.4 to 28.8 VDC and communicates over the local bus. The module is 30 mm wide, 117.5 mm deep, and 196.5 mm high — it occupies one standard 30 mm slot on the DIN-rail-mounted TM-PF30 carrier. The safe state is load circuit open, meaning any fault or power loss drops the outputs to a de-energized condition. Rated for safety applications up to SIL 2 per IEC 61508 and Category 3 per EN ISO 13849-1. The safe failure fraction (SFF) is 99 %, and the average diagnostic coverage (DCavg) is also 99 %. The probability of dangerous failure per hour (PFHD) under high demand is 1.3E-9 1/h, which places it well within SIL 2 limits. Hardware fault tolerance (HFT) is 1, and the device is classified as Type B per IEC 61508-2. Electrical endurance is rated at 200,000 operating cycles typical; mechanical service life is 10,000,000 cycles typical.","metaTitle":"Siemens 3RK1903-1BD00 PM-D F3 Safety Module, SIL 2 / Cat. 3,","metaDescription":"Siemens 3RK1903-1BD00 PM-D F3 safety module for motor starter power, SIL 2 (IEC 61508), Cat. 3 (EN ISO 13849-1), 20.4-28.8 VDC, 30 mm wide, current lifecycle. Sourced 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","title":"3RK1903-1BD00","Height":"196.5 mm","Safe State":"Load circuit open","Rated Value":"20.4 ... 28.8 V","description":"PM-D F3 for motor starter power module, Fail-safe Extension for PM-D F 1/2 for further potential group with delay 0.5 to 30 can be plugged onto TM-PF30 S47-C0 -C1 30 mm up to safety category 3 EN 954-1","lifecycle_stage":"current","Bus Communication":"Yes","Product Brand Name":"Local Safety Modules","Product Designation":"PM-D F3","Design Of The Product":"for safety circuits","according to IEC 61508":"2","Short Circuit Protection":"No","Safe failure fraction (SFF)":"99 %","Substance Prohibitance (Date)":"05/01/2012","category according to EN ISO 13849-1":"3","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","Electrical Endurance (Operating Cycles) Typical":"200 000","hardware fault tolerance according to IEC 61508":"1","PFHD with high demand rate according to EN 62061":"1.3E-9 1/h","SIL Claim Limit (subsystem) according to EN 62061":"2","Mechanical Service Life (Operating Cycles) Typical":"10 000 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"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=77349&mlfb=3RK1903-1BD00"},"ai":{"faq":[{"question":"What are the key safety ratings of 3RK1903-1BD00?","answer":"It is rated SIL 2 per IEC 61508, Category 3 per EN ISO 13849-1, with a PFHD of 1.3E-9 1/h, SFF of 99 %, and DCavg of 99 %."},{"question":"What is the supply voltage range for 3RK1903-1BD00?","answer":"The control supply voltage is 20.4 to 28.8 VDC."},{"question":"Where can I buy 3RK1903-1BD00?","answer":"This part 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 does 3RK1903-1BD00 have?","answer":"It carries RoHS compliance with a substance prohibition date of 05/01/2012."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RK1903-1BD00","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/3RK1903-1BD00 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}