{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RK1300-0JS01-1AA3","brand":"Siemens","brandSlug":"siemens","productSlug":"3RK1300-0JS01-1AA3","canonicalUrl":"https://aoctrl.com/siemens/3RK1300-0JS01-1AA3","factsUrl":"https://aoctrl.com/api/mcp/products/3RK1300-0JS01-1AA3","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS EM 300 RS, reversing starter for ET 200X, electromechanical, setting range 0.7–1.0 A, AC-3 0.25 kW at 400 V, with brake contact, IP65, PROFIBUS DP.","salesMarkdown":"The Siemens 3RK1300-0JS01-1AA3 is an electromechanical reversing starter from the SIRIUS EM 300 RS family, designed as a drop-in motor management module for the ET 200X distributed I/O system. It combines two contactors, a bimetal overload relay, and a motor brake output in a single IP65 enclosure rated for washdown environments — no separate panel enclosure required when mounted directly on a machine frame. Rated 0.25 kW in AC-3 duty at 400 V, with a setting range of 0.7 to 1.0 A, this starter handles small three-phase induction motors — typical for conveyor drives, agitators, or pump stations in food-and-bev or material-handling lines where reversing direction is needed and the motor brake must be controlled from the same unit. ## PROFIBUS DP and brake integration — what the bus and brake output mean on a real line Onboard PROFIBUS DP communication (no AS-interface) lets this reversing starter exchange start, stop, direction, and fault status directly with a higher-level controller over the fieldbus — no separate I/O wiring for each motor. The bus connection is integral to the ET 200X backplane; the starter simply snaps onto the bus rail and addresses itself via the rotary switch on the base module. The integrated motor brake output handles internally supplied DC brakes — common on small geared motors where the brake coil is fed from a rectifier inside the motor terminal box. This saves an external brake rectifier and a separate control relay; the starter's brake contact switches the AC supply to the motor's internal brake rectifier, so the brake releases when the motor runs and engages when the contactor drops. ## IP65 enclosure — deployment context for washdown and outdoor use Rated IP65, the enclosure is dust-tight and protected against water jets from any direction. This means the starter can be mounted directly on a machine frame in a food-processing area, a washdown station, or an outdoor conveyor gantry without a separate cabinet. Ambient operating temperature range is 0 to 55 °C, which covers most industrial floor conditions but not freezer or high-heat zones — if the line runs above 55 °C ambient, the starter needs to be relocated or derated.","metaTitle":"Siemens 3RK1300-0JS01-1AA3 EM 300 RS Reversing Starter, 0.25","metaDescription":"Siemens SIRIUS 3RK1300-0JS01-1AA3 reversing starter, 0.25 kW AC-3 at 400 V, 0.7–1.0 A setting range, IP65, PROFIBUS DP, integrated brake output. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Remote I/O & Fieldbus Modules"],"specifications":{"Depth":"134mm","Width":"140mm","Height":"270mm","Maximum":"0.25kW","Minimum":"0.25kW","Initial Value":"0.7A","Type of voltage":"DC","lifecycle_stage":"current","Full-scale value":"1A","Protection class IP":"IP65","PROFIBUS DP protocol":"Yes","AS-interface protocol":"No","Design of the product":"reversing starter","Type of the motor protection":"bimetal","at AC-3 at 400 V rated value":"0.25kW","Operating voltage rated value":"400 ... 500V","Design of the switching contact":"electromechanical","Design of short-circuit protection":"circuit-breakers","Product function Bus communication":"Yes","Ambient temperature during operation":"0 ... 55°C","Product component Motor brake output":"Yes","Equipment marking acc. to DIN EN 61346-2":"Q","Type of electrical connection for main current circuit":"tab terminals","Maximum short-circuit current breaking capacity (Icu) at 400 V rated value":"50A"}},"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=127815&mlfb=3RK1300-0JS01-1AA3","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RK1300-0JS01-1AA3/alternatives.json"},"ai":{"faq":[{"question":"Does 3RK1300-0JS01-1AA3 include a motor brake output?","answer":"Yes, it has an integrated motor brake output for internally supplied DC brakes, controlled via the reversing contactor logic."},{"question":"What fieldbus protocol does this reversing starter support?","answer":"It supports PROFIBUS DP onboard; AS-interface is not available on this variant."},{"question":"What is the IP rating and where can it be mounted?","answer":"IP65 — dust-tight and protected against water jets, so it can be mounted directly on a machine frame in washdown or outdoor areas without an additional enclosure."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RK1300-0JS01-1AA3","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/3RK1300-0JS01-1AA3 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}}