{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RK1322-1BS02-1AA4","brand":"Siemens","brandSlug":"siemens","productSlug":"3RK1322-1BS02-1AA4","canonicalUrl":"https://aoctrl.com/siemens/3RK1322-1BS02-1AA4","factsUrl":"https://aoctrl.com/api/mcp/products/3RK1322-1BS02-1AA4","rawCanonicalId":null},"summary":{"shortDescription":"Siemens AS-i compact reversing starter, electromechanical, IP65, 1.4-2 A setting range, AC-3 0.75 kW / 400 V, with brake contact and 2 integrated inputs.","salesMarkdown":"The Siemens 3RK1322-1BS02-1AA4 is a compact reversing starter in the AS-i system family — an electromechanical unit with bimetal motor protection, built for distributed motor control right at the machine. It's rated for 0.75 kW at AC-3 duty on 400 V, with a setting range of 1.4 to 2 A. The IP65 enclosure means it mounts directly on the machine frame or conveyor section, not inside a sealed panel — it handles washdown and wet-area deployment without an extra cabinet. That's high for a compact unit and tells you it's designed for installations with substantial fault current available, typical of industrial mains. The AC-3 rating of 0.75 kW at 400 V governs motor switching — that's the load category for squirrel-cage motors during starting and plugging. The bimetal overload relay inside is set from 1.4 to 2 A, so the motor full-load current must fall inside that window. The brake output (500 V DC / 1 A) handles a DC brake coil directly, saving a separate contactor for holding brakes on conveyors or vertical axes. AS-interface protocol onboard means this starter communicates over a single two-wire bus carrying both power and data — no separate control cable bundle. It integrates two digital inputs locally, so you can wire limit switches or pushbuttons directly to the starter without a remote I/O block. The tab terminals for the main circuit are a fast-connect style common in distributed motor control. ## Deployment context IP65 lets this live on the machine frame in food processing, packaging lines, or cold storage — areas where washdown hoses and condensation are routine. Mounting is via the housing's own footprint (270 x 120 x 190 mm), with the 9-pole motor and power connections made through sealed glands or tab connectors.","metaTitle":"Siemens 3RK1322-1BS02-1AA4 AS-i Reversing Starter, 1.4-2 A,","metaDescription":"Siemens 3RK1322-1BS02-1AA4 compact reversing starter with AS-i, bimetal overload, brake output, IP65. Rated 0.75 kW at AC-3/400 V, 50 kA breaking capacity. Current production.","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":"0.75 kW","Minimum":"0.75 kW","Initial Value":"1.4 A","Type of voltage":"DC","lifecycle_stage":"current","Full-scale value":"2 A","Type of assignment":"2","Protection class IP":"IP65","PROFIBUS DP protocol":"No","AS-interface protocol":"Yes","Design of the product":"reversing starter","Type of the motor protection":"bimetal","Design of the switching contact":"electromechanical","Design of short-circuit protection":"circuit-breakers","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":"0.75 kW","Type of electrical connection for main current circuit":"tab terminals","Maximum short-circuit current breaking capacity (Icu) at 400 V rated value":"50 000 A"}},"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=472772&mlfb=3RK1322-1BS02-1AA4","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RK1322-1BS02-1AA4/alternatives.json"},"ai":{"faq":[{"question":"What is the key rating that decides motor fit?","answer":"The AC-3 rating of 0.75 kW at 400 V with a setting range of 1.4 to 2 A is what governs motor selection. The motor's full-load current must fall within that window, and the power rating must not exceed 0.75 kW under AC-3 duty."},{"question":"Does this starter include a brake output?","answer":"Yes, it has a product component motor brake output rated for 500 V DC / 1 A, which controls a DC brake coil directly without an external contactor."},{"question":"What communication protocol does it use?","answer":"It uses AS-interface protocol — a two-wire bus carrying both power and data. It does not support PROFIBUS DP."},{"question":"What is the short-circuit breaking capacity?","answer":"The maximum short-circuit current breaking capacity (Icu) at 400 V is 50,000 A, which is high for a compact starter and suitable for industrial mains with substantial fault current."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RK1322-1BS02-1AA4","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/3RK1322-1BS02-1AA4 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}}