{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY4404-5","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY4404-5","canonicalUrl":"https://aoctrl.com/siemens/5SY4404-5","factsUrl":"https://aoctrl.com/api/mcp/products/5SY4404-5","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY4404-5 miniature circuit breaker, 4-pole, characteristic A, 400 V AC, 10 kA (EN 60898) / 35 kA (IEC 60947-2) breaking capacity.","salesMarkdown":"## SENTRON 5SY4404-5 — 4-pole MCB, Characteristic A Rated 400 V AC with a breaking capacity of 10 kA per EN 60898-1 and 35 kA per IEC 60947-2 — the higher figure under the industrial standard gives you headroom for high-fault panels where the utility transformer is close. DC side handles 60 V at 15 kA per IEC 60947-2, and UL 1077 listing at 5 kA covers North American panel acceptance. Snap-on mount to DIN rail, 4 MW width (72 mm), any mounting position. ## Breaking capacity and selectivity — what the dual rating means The 10 kA rating under EN 60898-1 is the domestic / light commercial ceiling; the 35 kA under IEC 60947-2 is the industrial rating that matters when you're coordinating downstream of a transformer or a high-capacity upstream breaker. Not for motor starting; that's C or D territory. That -40 °C floor makes it usable in unheated enclosures or cold-chain facilities. Sealable cover option available for metering or tamper-proof installs. Quick assembly system for ganging multiple poles or adding auxiliaries. Pollution degree 3, overvoltage category III — rated for fixed installations inside industrial panels, not for outdoor weatherproof use.","metaTitle":"Siemens 5SY4404-5 SENTRON MCB, 4P, Characteristic A, 10/35 k","metaDescription":"Siemens 5SY4404-5 SENTRON 4-pole MCB, characteristic A, 10 kA (EN 60898) / 35 kA (IEC 60947-2) breaking capacity, 400 V AC. Current lifecycle stage. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["4-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Width":"72 mm","title":"5SY4404-5","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","Standard":"IEC / EN 60898-1, IEC / EN 60947-2 / UL1077","description":"Miniature circuit breaker 400 V 10kA, 4-pole, A, 4A, D=70 mm","Halogen-Free":"Yes","Silicon-Free":"Yes","Design Of Pole":"4P","Number Of Poles":"4","lifecycle_stage":"current","Fastening Method":"Quick assembly system","Mounting Position":"any","at AC rated value":"400 V","at DC rated value":"60 V","Installation Depth":"70 mm","Product Brand Name":"SENTRON","Degree Of Pollution":"3","Product Designation":"Miniature circuit breaker","protection class IP":"IP20, with connected conductors","Overvoltage Category":"III","Combined Terminal Top":"Yes","Combined Terminal Bottom":"Yes","Suitability For Operation":"Mechanical engineering / industry","Neutral Conductor Switching":"No","Number Of Modular Width Units":"4","Position Of Power Supply Cord":"Any","Tripping Characteristic Class":"A","according to EN 60898 rated value":"10 kA","according to IEC 60947-2 rated value":"35 kA","Influence Of The Surrounding Temperature":"max. 95% to 55°C, max. 55% to 70°C, max. 35% to 75°C","Type Of Voltage Of The Operating Voltage":"AC","at DC according to IEC 60947-2 rated value":"15 kA","Value Range Of The Supply Voltage Frequency":"50/60 Hz","operating voltage at DC rated value maximum":"72 V","with multi-phase operation at AC rated value":"440 V","with single-phase operation at AC rated value":"440 V","at AC according to UL 1077 and CSA C22.2 No.235":"5 kA","vibration resistance according to IEC 60068-2-6":"±1mm at 5 to 25Hz; 50m/s² at 25 to 150Hz","Mechanical Service Life (Operating Cycles) Typical":"10 000","Product Extension Installable Supplementary Devices":"Yes","supply voltage with single-phase operation at AC rated value":"230 V","power loss [W] for rated value of the current at AC in hot operating state per pole":"2.3 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/2a8a5966acc44d4b9531dadd2f00d1b3.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=370109&mlfb=5SY4404-5"},"ai":{"faq":[{"question":"What is the breaking capacity of 5SY4404-5?","answer":"10 kA per EN 60898-1, 35 kA per IEC 60947-2 at 400 V AC, and 15 kA at 60 V DC per IEC 60947-2. UL 1077 rating is 5 kA."},{"question":"What compliance documentation does Siemens provide for 5SY4404-5?","answer":"The MCB carries dual certification to IEC/EN 60898-1 and IEC/EN 60947-2, plus UL 1077 and CSA C22.2 No.235. It is halogen-free and silicon-free, meeting clean-room material restrictions."},{"question":"Where can I buy 5SY4404-5 and get current pricing?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing confirmed at quote time — submit an RFQ for a firm price and lead time."},{"question":"Will 5SY4404-5 drop into a panel specified for 5SY4140-7 without rewiring?","answer":"Both are 4-pole SENTRON MCBs on the same DIN-rail footprint, so the mechanical fit and busbar connection are identical. The difference is the trip curve: 5SY4404-5 is characteristic A (fast), while 5SY4140-7 is characteristic C (motor/inrush rated). Verify the load type before swapping — a C-curve replacement for an A-curve application may not trip fast enough to protect sensitive electronics."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY4404-5","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/5SY4404-5 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}}