{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"4EU2451-0AD00-0A","brand":"Siemens","brandSlug":"siemens","productSlug":"4EU2451-0AD00-0A","canonicalUrl":"https://aoctrl.com/siemens/4EU2451-0AD00-0A","factsUrl":"https://aoctrl.com/api/mcp/products/4EU2451-0AD00-0A","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIDAC output reactor, 3-phase, 400V AC, 63A maximum, 4000Hz switching frequency, IP00, flat-type terminals.","salesMarkdown":"## What this output reactor does in a VFD line The 4EU2451-0AD00-0A is a Siemens SIDAC output reactor — a three-phase choke placed between a variable-frequency drive and the motor to limit dv/dt stress on the winding insulation and reduce bearing currents. It handles a maximum of 63 A and is rated for a 4000 Hz switching frequency, which covers most modern IGBT-based drives. The 0.27 mH inductance per phase smooths the PWM waveform, extending motor life on long cable runs or with older rewinds. Rated for 400 V AC three-phase input, this reactor is sized for a motor drive line where the inverter's carrier frequency hits 4 kHz. The IP00 enclosure means it's an open-frame component — mount it inside a panel or cabinet, not in a washdown area. The flat-type terminals accept busbar or crimp lugs, common in power distribution sections of a drive cabinet. ## Thermal class and ambient limits The reactor is built to thermal class H per IEC 60085, which means the insulation system can handle a continuous hot-spot temperature of 180 °C. The rated ambient temperature is 40 °C — standard for most enclosed drive cabinets. If your panel runs hotter than that, derate the continuous current per the thermal curve; the class H margin gives some headroom, but the 63 A maximum assumes 40 °C ambient. ## Physical fit in the panel Dimensions are 0.22 m wide by 0.21 m tall by 0.13 m deep — roughly the footprint of a small contactor or a two-pole breaker. It's an open-frame component (IP00), so plan for clearance around the flat-type terminals for lug access and air circulation. No DIN-rail clip; it bolts directly to the panel backplate.","metaTitle":"Siemens SIDAC 4EU2451-0AD00-0A Output Reactor, 63A 4000Hz 3-","metaDescription":"Siemens SIDAC 4EU2451-0AD00-0A output reactor, 63A max, 4000Hz switching frequency, 3-phase AC, IP00. Mature lifecycle. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Line/Load Reactors"],"specifications":{"Depth":"0.13m","Width":"0.22m","Height":"0.21m","Maximum":"63A","Rated Value":"4 000Hz","Phase number":"3","Type of voltage":"AC","lifecycle_stage":"mature","Product brand name":"SIDAC","Product designation":"output reactor","Protection class IP":"IP00","Inductivity rated value":"0.00027H","Ambient temperature rated value":"40°C","Thermal class acc. to IEC 60085":"H","Type of electrical connection for main current circuit":"flat connector"}},"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=325655&mlfb=4EU2451-0AD00-0A","alternativesUrl":"https://aoctrl.com/api/mcp/products/4EU2451-0AD00-0A/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 4EU2451-0AD00-0A 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 position."},{"question":"What are the key specifications for 4EU2451-0AD00-0A?","answer":"It is a 3-phase AC output reactor rated for 400 V, 63 A maximum, with a 4000 Hz switching frequency, 0.27 mH inductance, thermal class H, and IP00 protection. Terminals are flat-type for busbar or lug connections."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/4EU2451-0AD00-0A","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/4EU2451-0AD00-0A 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}}