{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY7404-8CC","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY7404-8CC","canonicalUrl":"https://aoctrl.com/siemens/5SY7404-8CC","factsUrl":"https://aoctrl.com/api/mcp/products/5SY7404-8CC","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY7404-8CC miniature circuit breaker, 4-pole, 4 A, D characteristic, 400 V AC, 30 kA IEC, 5 kA UL 1077, 4 MW.","salesMarkdown":"It's an active-production part (lifecycle stage: current) from the 5SY7CC design series, built for industrial panel applications where high inrush currents from motor or transformer loads demand the D-curve's delayed magnetic trip. The D characteristic allows short-duration surges 10-20x rated current before tripping magnetically — suited for motor starting or capacitive loads that would nuisance-trip a B- or C-curve breaker. Breaking capacity is 30 kA per IEC 60947-2 and 5 kA per UL 1077 / CSA C22.2 No.235. The UL 1077 rating covers supplementary protection in North American panels. Occupies 4 width units at 72 mm wide, so plan for 72 mm of DIN rail per breaker. Combined terminal top and bottom allow feed-through wiring or busbar connection. Sealable for lockout/tagout. IP20 with conductors connected — protected against finger contact, not for wet environments. Ambient temperature range -25 to +55 °C operating, storage -40 to +75 °C. Halogen-free and silicon-free — relevant for sensitive electronics environments where outgassing could cause contact corrosion. Rated frequency 50/60 Hz. The part is classified per DIN EN 61346-2 and DIN EN 81346-2 as function code F — protective device. Suitability noted for mechanical engineering and industry. Neutral conductor switching is not integrated — this is a 4-pole breaker switching all four poles, but the neutral pole is not a switched neutral; verify the application requires a 4-pole device.","metaTitle":"Siemens 5SY7404-8CC SENTRON MCB, 4A D-curve, 4-pole, 30kA","metaDescription":"Siemens 5SY7404-8CC SENTRON miniature circuit breaker, 4A rated, D tripping characteristic, 4-pole, 400V AC, 30kA breaking capacity per IEC 60947-2. Active production. Quoted to or","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["4-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Solid":"0.75 ... 35 mm²","Width":"72 mm","title":"5SY7404-8CC","Height":"90 mm","Sealable":"Yes","Stranded":"0.75 ... 35 mm²","Rated Value":"50/60 Hz","description":"Miniature circuit breaker 400 V 15kA, 4-pole, D, 4 A","Halogen-Free":"Yes","Silicon-Free":"Yes","Mounting type":"Quick assembly system","During Storage":"-40 ... +75 °C","Number of poles":"4","Type of voltage":"AC","lifecycle_stage":"current","Mounting position":"any","Installation depth":"70 mm","Product brand name":"SENTRON","Ambient temperature":"-25 ... +55 °C","Product designation":"Miniature circuit breaker","Protection class IP":"IP20, with connected conductors","at AC / rated value":"400 V","Overvoltage category":"III","Combined Terminal Top":"Yes","Number of width units":"4","Number of poles / Note":"4P","acc. to DIN EN 61346-2":"F","acc. to DIN EN 81346-2":"F","Combined Terminal Bottom":"Yes","circuit-breaker / Design":"5SY7CC","Suitability for operation":"Mechanical engineering / industry","Current / at AC / rated value":"4 A","Tripping characteristic class":"D","at DC / rated value / maximum":"72 V","Position / of power supply cord":"Any","acc. to IEC 60947-2 / rated value":"30 kA","Product feature / Touch protection":"Yes","Influence of the surrounding temperature":"max. 95% to 55°C, max. 55% to 70°C, max. 35% to 75°C","at AC / acc. to UL 1077 and CSA C22.2 No.235":"5 kA","Tightening torque / with screw-type terminals":"2.5 ... 3.5 N·m","Product function / neutral conductor switching":"No","with multi-phase operation / at AC / rated value":"440 V","with single-phase operation / at AC / rated value":"440 V","Mechanical service life (switching cycles) / typical":"10 000","Tightening torque [lbf·in] / with screw-type terminals":"22 ... 31 lbf·in"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/1f625368f8ca4d7a6b300be0724fb92a.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=386550&mlfb=5SY7404-8CC"},"ai":{"faq":[{"question":"How do I get current pricing and availability for 5SY7404-8CC?","answer":"Submit an RFQ through the storefront. The part is sourced to order through independent distribution; availability and current pricing are confirmed at quote time. No stock count or price is published here."},{"question":"What is 5SY7404-8CC's listed depth?","answer":"Depth is 76 mm, with an installation depth of 70 mm. The 6 mm difference accounts for the front projection of the toggle and terminal covers."},{"question":"What wire sizes does 5SY7404-8CC accept?","answer":"Solid and stranded conductors from 0.75 to 35 mm². Tightening torque for the screw terminals is 2.5 to 3.5 N·m."},{"question":"Will 5SY7404-8CC drop into a panel specified around 5SY3132-6 without rewiring?","answer":"Not directly — the 5SY3132-6 is a different pole count and rating. The 5SY7404-8CC is a 4-pole, 4 A D-curve unit; the 5SY3132-6 is a 2-pole device. Footprint (width units) and terminal positions differ. Panel rework would be required."},{"question":"What compliance documentation does Siemens provide for 5SY7404-8CC?","answer":"The part carries IEC 60947-2 certification (30 kA breaking capacity,) and UL 1077 / CSA C22.2 No.235 (5 kA,). It is halogen-free and silicon-free. Standard Siemens declarations of conformity (CE, UKCA) and RoHS/REACH statements are available on request."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY7404-8CC","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/5SY7404-8CC when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}