{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RK1300-0KS01-0AA4","brand":"Siemens","brandSlug":"siemens","productSlug":"3RK1300-0KS01-0AA4","canonicalUrl":"https://aoctrl.com/siemens/3RK1300-0KS01-0AA4","factsUrl":"https://aoctrl.com/api/mcp/products/3RK1300-0KS01-0AA4","rawCanonicalId":null},"summary":{"shortDescription":"Siemens EM 300 DS, electromechanical direct starter, setting range 0.9...1.25A, AC-3 0.37kW/400V, PROFIBUS DP, IP65, with brake contact.","salesMarkdown":"The Siemens 3RK1300-0KS01-0AA4 is an EM 300 DS electromechanical direct starter designed for the ET 200X distributed I/O system. It combines a motor starter, bimetal overload protection, and a PROFIBUS DP interface in a single IP65-rated enclosure, so it can be mounted directly on the machine or in a field junction box rather than inside a central panel. The setting range of 0.9...1.25 A covers small motors up to 0.37 kW at 400 V AC-3 duty — the rating that governs switching of squirrel-cage motors during starting and running. The 0.37 kW rating at AC-3, 400 V is the motor power this starter can handle under the heaviest standard duty — starting and stopping a motor at full load. The operating voltage range of 400... 500 V means it works on 400 V or 480 V line supplies common in European and North American industrial plants. IP65 protection means the housing is dust-tight and protected against water jets from any direction — suitable for washdown areas, outdoor installation, or food-and-beverage lines where hose-down cleaning is routine. The ambient temperature range of 0... 55 °C covers most factory-floor conditions but note the lower bound: it is not rated for freezer or cold-store environments. ## Integration and connectivity This starter communicates via PROFIBUS DP, so it plugs directly into a PROFIBUS network without an extra gateway — the bus cable connects to the integrated bus interface. The main current circuit connects via tab terminals, typical for the ET 200X system's 9-pole motor feeder and power connection. A built-in motor brake output (DC 500 V / 1 A) handles internally supplied brakes, saving an external brake rectifier or contactor. The enclosure dimensions — 140 mm wide, 270 mm high, 134 mm deep — fit the ET 200X modular footprint; plan the gland plate and cable entry accordingly.","metaTitle":"Siemens 3RK1300-0KS01-0AA4 EM 300 DS direct starter, 0.9-1.2","metaDescription":"Siemens 3RK1300-0KS01-0AA4 EM 300 DS electromechanical direct starter, setting range 0.9...1.25A, 0.37kW/400V AC-3, PROFIBUS DP, IP65. Current lifecycle status.","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":"0.37kW","Minimum":"0.37kW","Initial Value":"0.9A","Type of voltage":"DC","lifecycle_stage":"current","Full-scale value":"1.25A","Protection class IP":"IP65","PROFIBUS DP protocol":"Yes","AS-interface protocol":"No","Design of the product":"direct starter","Type of the motor protection":"bimetal","at AC-3 at 400 V rated value":"0.37kW","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=314611&mlfb=3RK1300-0KS01-0AA4","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RK1300-0KS01-0AA4/alternatives.json"},"ai":{"faq":[{"question":"What are the key dimensions of this starter?","answer":"The enclosure measures 140 mm wide, 270 mm high, and 134 mm deep."},{"question":"What is the setting range and motor power rating?","answer":"The setting range is 0.9...1.25 A, and the rated motor power at AC-3, 400 V is 0.37 kW."},{"question":"Does this starter include a brake output?","answer":"Yes, it includes a motor brake output rated for DC 500 V / 1 A, suitable for internally supplied brakes."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RK1300-0KS01-0AA4","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/3RK1300-0KS01-0AA4 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}}