{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RA7141-1AA17-0AB4","brand":"Siemens","brandSlug":"siemens","productSlug":"3RA7141-1AA17-0AB4","canonicalUrl":"https://aoctrl.com/siemens/3RA7141-1AA17-0AB4","factsUrl":"https://aoctrl.com/api/mcp/products/3RA7141-1AA17-0AB4","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS safety load feeder, direct starter, Size S00, DC 24V, Cat 4 / SIL 3, 0.55 kW at 400 V AC-3, screw-type terminals, IP20.","salesMarkdown":"## Safety-rated direct starter for small motor loads The Siemens 3RA7141-1AA17-0AB4 is a SIRIUS safety load feeder configured as a direct starter, meaning it combines a contactor, overload relay, and short-circuit protection into a single unit for controlling and protecting a motor branch circuit. Rated for a 0.55 kW motor at 400 V AC-3 duty, it handles a motor current of 1.5 A, with the thermal overload release adjustable from 1.1 to 1.6 A to match the motor's full-load current. The control voltage is 24 V DC, so it integrates directly into a standard 24 V DC control circuit without needing an additional power supply conversion. ## Cat 4 / SIL 3 — what the safety ratings mean for the circuit This unit carries Category 4 per EN 954-1 and Safety Integrity Level 3 per IEC 61508, which means it is designed for the highest level of fault tolerance and diagnostic coverage in a safety-related control system. In practice, Cat 4 / SIL 3 allows the load feeder to be used in safety circuits where a single fault cannot lead to a loss of the safety function, and where the fault is detected at or before the next demand — typical for guarding applications, emergency stop circuits, and light curtain interfaces. The cascading design (yes) means multiple units can be linked to extend the safety function across several motor starters without adding external safety relays. Mounts via screw and snap-on onto a 35 mm standard mounting rail, occupying the S00 footprint — 90 mm wide, 211 mm tall, 113 mm deep.","metaTitle":"Siemens 3RA7141-1AA17-0AB4 SIRIUS Safety Load Feeder","metaDescription":"Siemens 3RA7141-1AA17-0AB4 SIRIUS safety load feeder, DC 24V, Size S00, 0.55 kW at 400V AC-3, Cat 4 / SIL 3. Current lifecycle stage.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Motor Starters"],"specifications":{"Depth":"113mm","Width":"90mm","Height":"211mm","1-Channel":"No","2-Channel":"No","Mounting type":"screw and snap-on mounting onto 35 mm standard mounting rail","Automatic start":"No","Type of voltage":"DC","lifecycle_stage":"current","Bus communication":"No","at DC rated value":"24 ... 24V","Monitored Start-Up":"No","Type of assignment":"2","Protection class IP":"IP20","Size of load feeder":"S00","PROFIBUS DP protocol":"No","AS-interface protocol":"No","Design of the product":"direct starter","EMERGENCY OFF function":"No","Design of the cascading":"yes","Short circuit protection":"Yes","Category acc. to EN 954-1":"4","Operating voltage rated value":"400V","Switching capacity current at AC-3":"1.5A","Ambient temperature during operation":"-20 ... +60°C","Equipment marking acc. to DIN EN 61346-2":"A","Suitability for interaction press control":"No","Operating current at AC at 400 V rated value":"1.5A","Operating power at AC-3 at 400 V rated value":"0.55kW","Safety Integrity Level (SIL) acc. to IEC 61508":"3","Type of electrical connection for main current circuit":"screw-type terminals","Adjustable pick-up value current of the current-dependent overload release":"1.1 ... 1.6A","Maximum short-circuit current breaking capacity (Icu) at 400 V rated value":"50kA","Supply voltage frequency for auxiliary and control current circuit rated value":"0 ... 0Hz"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=536410&mlfb=3RA7141-1AA17-0AB4","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RA7141-1AA17-0AB4/alternatives.json"},"ai":{"faq":[{"question":"Is 3RA7141-1AA17-0AB4 compatible with 24 V DC systems?","answer":"Yes, the control supply voltage is rated at 24 V DC, so it connects directly to a standard 24 V DC control bus without needing an AC-to-DC converter."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RA7141-1AA17-0AB4","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/3RA7141-1AA17-0AB4 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}}