{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RK1300-0JS01-0AA4","brand":"Siemens","brandSlug":"siemens","productSlug":"3RK1300-0JS01-0AA4","canonicalUrl":"https://aoctrl.com/siemens/3RK1300-0JS01-0AA4","factsUrl":"https://aoctrl.com/api/mcp/products/3RK1300-0JS01-0AA4","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS EM 300 DS electromechanical direct starter, 3RK1300-0JS01-0AA4, setting range 0.7...1.0A, AC-3 0.25kW/400V, IP65, PROFIBUS DP, with brake contact, tab terminals.","salesMarkdown":"The Siemens 3RK1300-0JS01-0AA4 is an EM 300 DS electromechanical direct starter from the SIRIUS family, designed for the ET 200X distributed I/O system. It's a fully integrated motor starting solution that combines a contactor, bimetal overload relay, and short-circuit protection into one IP65-rated enclosure. Rated at 0.25 kW at AC-3 duty on a 400 V supply, it handles small three-phase motors — think conveyor drives, pump motors, or small fan loads on a distributed line. The setting range of 0.7 to 1.0 A means you dial in the full-load current of the motor, not the frame size. The 0.25 kW AC-3 rating at 400 V tells you this starter is sized for the smallest motor class — fractional horsepower, typically below 1/3 hp. The bimetal overload provides inverse-time thermal protection — it tracks the motor's heating curve, so it's good for standard induction motors with normal starting duty. Not for frequent starting or reversing applications where an electronic overload would be a better fit. This unit is meant for washdown zones, outdoor cabinets, or anywhere dust and moisture are a problem. The tab terminals for the main circuit are a quick-connect style, common in distributed motor control centers. The built-in motor brake output handles DC 500 V / 1 A for internally supplied brakes — think holding brakes on vertical-axis motors or conveyor stops. That saves an external brake rectifier and relay. ## Bus communication and integration PROFIBUS DP onboard means this starter talks directly to a PLC without a separate gateway. It's a bus node — you get start/stop, fault feedback, and current monitoring over the network. The 9-pole motor feeder and 9-pole power connection are the physical interface; they plug into the ET 200X backplane. Operating ambient range of 0 to 55 °C is typical for industrial control cabinets. No derating data in the spec, but keep the enclosure ventilated if you're packing multiple units side by side.","metaTitle":"Siemens 3RK1300-0JS01-0AA4 EM 300 DS Direct Starter, 0.7-1.0","metaDescription":"Siemens 3RK1300-0JS01-0AA4 EM 300 DS electromechanical direct starter, 0.7-1.0A setting range, 0.25kW at AC-3/400V, IP65, PROFIBUS DP, with brake contact. Current production. Avail","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":"direct 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=154012&mlfb=3RK1300-0JS01-0AA4","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RK1300-0JS01-0AA4/alternatives.json"},"ai":{"faq":[{"question":"Does this starter have PROFIBUS communication?","answer":"Yes, PROFIBUS DP is built in. It communicates directly with a PROFIBUS master without an extra gateway module."},{"question":"What is the IP rating and where can it be used?","answer":"IP65 — dust-tight and protected against water jets. Suitable for washdown areas, outdoor cabinets, and dusty industrial environments."},{"question":"Will 3RK1300-0JS01-0AA4 drop into a panel specified for 3RT1055-6QF35?","answer":"No — the 3RT1055-6QF35 is a SIRIUS power contactor with screw fixing and a different mounting footprint (170 mm depth vs 134 mm, different height). The 3RK1300 mounts on an ET 200X backplane, not a standard DIN rail, so rewiring and a different mounting system are required."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RK1300-0JS01-0AA4","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/3RK1300-0JS01-0AA4 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}}