{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RK1300-0KS01-0AA3","brand":"Siemens","brandSlug":"siemens","productSlug":"3RK1300-0KS01-0AA3","canonicalUrl":"https://aoctrl.com/siemens/3RK1300-0KS01-0AA3","factsUrl":"https://aoctrl.com/api/mcp/products/3RK1300-0KS01-0AA3","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS EM 300 DS direct starter for ET 200X, 3RK1300-0KS01-0AA3, electromechanical, setting range 0.9-1.25A, AC-3 0.37kW/400V, IP65, with brake contact, PROFIBUS DP, 134mm depth, 140mm width, 270mm height.","salesMarkdown":"## What this direct starter is and where it lives The Siemens 3RK1300-0KS01-0AA3 is an EM 300 DS electromechanical direct starter designed for the ET 200X distributed I/O system. It is a self-contained motor starting and protection unit that combines a contactor, bimetal overload relay, and short-circuit protection into one package rated for 0.9 to 1.25 A full-scale setting range. At AC-3 duty on a 400 V supply, it handles 0.37 kW motors — the kind you find on small conveyors, pumps, and agitators out on the plant floor. The IP65 enclosure means this starter is built for washdown environments and dusty industrial zones — it keeps coolant, dust, and moisture out of the switching contacts. The 134 mm depth, 140 mm width, and 270 mm height give you the envelope for panel layout or direct machine mounting. The 0.9-1.25 A setting range and 0.37 kW at AC-3 400 V tell you the motor current this starter is sized for. AC-3 is the standard duty for squirrel-cage induction motors — starting, stopping, and running under load. The bimetal overload relay provides Class 10 or 20 thermal protection — it tracks motor heating and trips on sustained overcurrent. The built-in brake output (motor brake contact) handles externally supplied DC brakes, saving an extra interposing relay. PROFIBUS DP communication lets the starter report status and accept commands directly from the PLC without hardwiring every I/O point. ## Integration into the ET 200X system This direct starter mounts directly on the ET 200X rail or can be panel-mounted via the screw fixing points. The main current circuit uses tab terminals — 9-pole motor feeder and 9-pole power connection — so wiring is a plug-and-play affair with the pre-wired connector system. Equipment marking per DIN EN 61346-2 is letter Q, which designates it as a switching device for power circuits. The PROFIBUS DP interface uses the standard 9-pin D-sub connector common to the ET 200X family — no special adapters needed. The IP65 rating on the housing means you can mount it directly on the machine frame without a separate cabinet, as long as the cable glands and connectors are also rated for the environment.","metaTitle":"Siemens 3RK1300-0KS01-0AA3 EM 300 DS Direct Starter, 0.9-1.2","metaDescription":"Siemens 3RK1300-0KS01-0AA3 EM 300 DS direct starter for ET 200X. Setting range 0.9-1.25A, AC-3 0.37kW/400V, IP65, PROFIBUS DP, with brake contact. Sourced to order against RFQ.","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=300694&mlfb=3RK1300-0KS01-0AA3","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RK1300-0KS01-0AA3/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3RK1300-0KS01-0AA3 and how is it quoted?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm number."},{"question":"What is the setting range and motor power for 3RK1300-0KS01-0AA3?","answer":"The setting range is 0.9 to 1.25 A, and at AC-3 400 V it is rated for 0.37 kW motors. The full-scale value is 1.25 A."},{"question":"Does 3RK1300-0KS01-0AA3 have PROFIBUS DP communication?","answer":"Yes, it supports PROFIBUS DP protocol for communication with the PLC. It does not support AS-interface."},{"question":"What protection class does 3RK1300-0KS01-0AA3 have?","answer":"The enclosure is rated IP65, suitable for washdown and dusty environments. The operating temperature range is 0 to 55 °C."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RK1300-0KS01-0AA3","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/3RK1300-0KS01-0AA3 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}}