{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RK1322-0BS12-1AA1","brand":"Siemens","brandSlug":"siemens","productSlug":"3RK1322-0BS12-1AA1","canonicalUrl":"https://aoctrl.com/siemens/3RK1322-0BS12-1AA1","factsUrl":"https://aoctrl.com/api/mcp/products/3RK1322-0BS12-1AA1","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS AS-Interface compact reversing starter, solid-state motor protection, 2.2 kW / 400 V AC-3, IP65, setting range 2–5.95 A.","salesMarkdown":"The Siemens 3RK1322-0BS12-1AA1 is a SIRIUS AS-Interface compact reversing starter with solid-state motor protection and solid-state switching contacts. It is designed for reversing motor control in distributed automation architectures — think conveyor reversals, gate drives, or any application where you need to swap motor rotation without a separate contactor-and-overload assembly. Reversing starters are built with two contactors mechanically interlocked so both cannot close simultaneously; this one packages that function into a single IP65 enclosure ready for machine-mount or wall-mount deployment. Rated for 2.2 kW at AC-3 duty on a 400 V line, with a setting range of 2 to 5.95 A. The solid-state protection eliminates the thermal-lag issues of a bimetal relay, giving you faster, more repeatable overload response. The IP65 enclosure means the unit is dust-tight and protected against water jets from any direction. This is a washdown-ready package — suitable for food-and-bev lines, car washes, or any environment where hosing down the machine is part of the cleaning cycle. It is not submersible, but it will handle the spray. ## AS-Interface integration and brake output This starter communicates over AS-Interface (AS-i) protocol — the two-wire bus that carries both power and data on a single flat cable. It is not a PROFIBUS DP device; the AS-i interface is built in, so no external gateway module is required for the bus connection. The part includes bus communication capability as a standard function. A notable feature is the integrated motor brake output: a 24 V DC / 3 A contact for externally supplied brakes. If your motor has a spring-applied holding brake, this output switches it in sync with the motor power — brake release on start, brake apply on stop. That saves an external interposing relay and simplifies the wiring harness. The brake contact is rated for DC loads, so verify the brake coil current does not exceed 3 A. Main circuit connection uses tab terminals. ## Breaking capacity and short-circuit coordination The maximum short-circuit breaking capacity (Icu) at 400 V is rated at 100 000 A. That is a very high fault-current rating — it means this starter can safely interrupt a 100 kA fault without catastrophic failure, provided the upstream fuse (the design calls for fuse protection) is properly coordinated. For a line-side fault, the fuse clears the energy; the starter must withstand the let-through. This rating tells you the unit is suitable for installation close to large transformers or in high-fault-capacity industrial grids. The short-circuit protection design is fuse-based — no built-in magnetic trip. That means you must size the upstream fuse per the manufacturer's coordination tables. Do not assume a standard motor circuit protector (MCP) provides equivalent protection; the solid-state output stage has different fault-withstand characteristics than an electromechanical contactor.","metaTitle":"Siemens 3RK1322-0BS12-1AA1 AS-i Reversing Starter, 2.2 kW, I","metaDescription":"Siemens SIRIUS 3RK1322-0BS12-1AA1 AS-Interface compact reversing starter. Solid-state motor protection, IP65, 2.2 kW at AC-3 400 V, 100 kA breaking capacity. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Remote I/O & Fieldbus Modules"],"specifications":{"Depth":"190 mm","Width":"120 mm","Height":"270 mm","Maximum":"2.2 kW","Minimum":"0.75 kW","Initial Value":"2 A","Type of voltage":"DC","lifecycle_stage":"current","Full-scale value":"5.95 A","Type of assignment":"1","Protection class IP":"IP65","PROFIBUS DP protocol":"No","AS-interface protocol":"Yes","Design of the product":"reversing starter","Type of the motor protection":"solid-state","Design of the switching contact":"solid-state","Design of short-circuit protection":"fuse","Product function Bus communication":"Yes","Ambient temperature during operation":"-25 ... +55 °C","Product component Motor brake output":"Yes","Equipment marking acc. to DIN EN 61346-2":"Q","Operating power at AC-3 at 400 V rated value":"2.2 kW","Type of electrical connection for main current circuit":"tab terminals","Maximum short-circuit current breaking capacity (Icu) at 400 V rated value":"100 000 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$720.09","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=197527&mlfb=3RK1322-0BS12-1AA1","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RK1322-0BS12-1AA1/alternatives.json"},"ai":{"faq":[{"question":"What is the closest functional second-source to this part?","answer":"The 3RT5065-6AB36 is a SIRIUS power contactor but it is a different class of device — a conventional contactor without AS-Interface, without solid-state protection, and without an IP65 enclosure. It would not drop into the same panel without rewiring and adding separate overload and bus-interface components. There is no direct functional second-source that matches the integrated AS-i reversing starter, solid-state protection, and IP65 packaging in one unit."},{"question":"Will this starter drop into a panel specified around a 3RT5065-6AB36 contactor?","answer":"No. The 3RT5065-6AB36 is a screw-fixed power contactor with a different footprint (202 mm depth, 145 mm width, 210 mm height) and requires separate overload relay, AS-i gateway, and IP20 enclosure. The 3RK1322-0BS12-1AA1 is a self-contained IP65 unit with tab terminals. Panel cutouts and wiring schemes are not compatible."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RK1322-0BS12-1AA1","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/3RK1322-0BS12-1AA1 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}}