{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"4EM5111-8CB00","brand":"Siemens","brandSlug":"siemens","productSlug":"4EM5111-8CB00","canonicalUrl":"https://aoctrl.com/siemens/4EM5111-8CB00","factsUrl":"https://aoctrl.com/api/mcp/products/4EM5111-8CB00","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIDAC series, smoothing choke, 1-phase, 74 A DC, 0.23 mH, 1000 V insulation, IP00, flat-type terminal.","salesMarkdown":"## DC smoothing choke for 50 Hz line-commutated drives The Siemens SIDAC 4EM5111-8CB00 is a single-phase smoothing choke rated for 74 A DC continuous current with 0.23 mH inductance, designed to sit on the DC link of a line-commutated rectifier fed from a 50 Hz supply. The 1000 V insulation voltage means it can handle the peak DC bus voltage in a standard 400–690 VAC drive without creeping along the winding. IP00 and flat-type terminals tell you this is an open-frame component meant for a cabinet — not a standalone enclosure — so plan for a gland plate or busbar connection inside the panel. That current rating, not the inductance, is the selection gate: if your drive's DC bus pulls more than 74 A under full load, this choke saturates and loses its smoothing effect. The 22.1 W coil loss plus 0.3 W iron loss total 22.4 W of heat to vent inside the cabinet — small enough for natural convection in a well-ventilated panel, but worth a glance at the thermal rise if the enclosure is sealed. Depth 0.145 m, width 0.097 m, height 0.087 m. Flat-type terminals require bolted busbar or cable lug connection. IP00 needs cabinet mounting.","metaTitle":"Siemens SIDAC 4EM5111-8CB00 Smoothing Choke, 74 A DC, 0.23 m","metaDescription":"Siemens SIDAC 4EM5111-8CB00 DC smoothing choke, 74 A rated, 0.23 mH, 1000 V insulation, IP00. Mature lifecycle; sourced to order. Request a quote.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Line/Load Reactors"],"specifications":{"Depth":"0.145m","Width":"0.097m","Height":"0.087m","Maximum":"74A","Rated Value":"66.6A","Phase number":"1","Energy content":"0.629W","Type of voltage":"DC","lifecycle_stage":"mature","Product brand name":"SIDAC","Product designation":"Glaettungsdrossel","Protection class IP":"IP00","Inductivity rated value":"0.00023H","Power loss [W] of the coil":"22.1W","Operating voltage rated value":"1 000V","Ambient temperature rated value":"40°C","Operating frequency rated value":"50Hz","Power loss [W] of the iron core":"0.3W","Thermal class acc. to IEC 60085":"B","Product function windings in parallel selectable":"No","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=188476&mlfb=4EM5111-8CB00","alternativesUrl":"https://aoctrl.com/api/mcp/products/4EM5111-8CB00/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/4EM5111-8CB00","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/4EM5111-8CB00 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}}