{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"4EP3701-1DS00","brand":"Siemens","brandSlug":"siemens","productSlug":"4EP3701-1DS00","canonicalUrl":"https://aoctrl.com/siemens/4EP3701-1DS00","factsUrl":"https://aoctrl.com/api/mcp/products/4EP3701-1DS00","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 4EP3701-1DS00 commutating choke for converter, 3-phase, 400V AC, 25.2A rated current, 28A max, 1mH, IP00, screw terminals.","salesMarkdown":"The Siemens 4EP3701-1DS00 is a 3-phase commutating choke (line reactor) for converter applications, rated at 400 V AC, 50 Hz, with a continuous rated current of 25.2 A and a maximum current of 28 A. Its primary job is to limit the rate of current rise (di/dt) and reduce harmonic distortion on the input of a variable-frequency drive or DC drive — protecting the converter's rectifier diodes and smoothing the DC bus. The 1 mH inductance and 4% relative inductive voltage drop are the key sizing parameters: this choke is designed for a drive whose nominal input current matches the 25.2 A rating, not for general line filtering. The 25.2 A rated current is the continuous thermal limit at 40 °C ambient with thermal class B insulation — meaning the winding temperature rise stays within 80 K above ambient under rated load. For a drive with a 25 A input, this choke runs within its design margin. The 28 A maximum is the overload ceiling; sustained operation above 25.2 A will exceed the thermal class B limit and shorten insulation life. At DC rated value, the choke carries 34.3 A — useful if the same physical choke is applied on the DC link side of a converter, but the AC 25.2 A rating governs the standard line-side installation. Total power loss splits into 49 W in the coil and 12 W in the iron core, summing to 61 W at rated load — this heat must be dissipated into the surrounding air. IP00 means no enclosure; the choke is intended for mounting inside a panel with forced or natural convection, not in a washdown or dusty environment. ## Mounting and connection Dimensions are 0.178 m wide, 0.153 m high, 0.105 m deep. No DIN-rail clip — this is a bolt-down component; plan for a mounting plate or chassis bracket. This is not a cross-reference for miniature circuit breakers like 5SJ3140-7 or 5SL6606-7YA — those serve overcurrent protection, not line reactance. The 4EP3701-1DS00 is a purpose-built choke; there is no drop-in functional equivalent from the breaker family.","metaTitle":"Siemens 4EP3701-1DS00 Commutating Choke, 3-Phase 400V 25.2A","metaDescription":"Siemens 4EP3701-1DS00 commutating choke for converter, 3-phase, 400V AC, 25.2A rated current, 28A max, 1mH, IP00, screw terminals. Sourced to order. Request quote.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Line/Load Reactors"],"specifications":{"Depth":"0.105m","Width":"0.178m","Height":"0.153m","Maximum":"28A","Rated Value":"25.2A","Phase number":"3","Type of voltage":"AC","lifecycle_stage":"mature","at DC rated value":"34.3A","Product designation":"Kommut.-Drossel f. Stromrichter","Protection class IP":"IP00","Inductivity rated value":"0.001H","Power loss [W] of the coil":"49W","Operating voltage rated value":"400V","Ambient temperature rated value":"40°C","Operating frequency rated value":"50Hz","Power loss [W] of the iron core":"12W","Thermal class acc. to IEC 60085":"B","Type of electrical connection for main current circuit":"screw-type terminals","Relative inductive drop in voltage on the measurement level current, voltage and frequency":"4%"}},"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=326106&mlfb=4EP3701-1DS00","alternativesUrl":"https://aoctrl.com/api/mcp/products/4EP3701-1DS00/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 4EP3701-1DS00 and what is the lead time?","answer":"This part is sourced to order through independent distribution. Availability and current pricing are confirmed at quote time against an RFQ — submit a request for a firm price and lead time."},{"question":"What are the key specifications of 4EP3701-1DS00?","answer":"It is a 3-phase commutating choke rated at 400 V AC, 50 Hz, 25.2 A continuous (28 A max), with 1 mH inductance and a 4% relative inductive voltage drop. It uses screw terminals and is rated IP00."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/4EP3701-1DS00","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/4EP3701-1DS00 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}}