{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY7620-7","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY7620-7","canonicalUrl":"https://aoctrl.com/siemens/5SY7620-7","factsUrl":"https://aoctrl.com/api/mcp/products/5SY7620-7","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY7620-7, 4-pole (3P+N) miniature circuit breaker, C-curve, 15 kA (EN 60898) / 25 kA (IEC 60947-2), 400 V AC, 72 mm wide.","salesMarkdown":"Its 15 kA breaking capacity per IEC/EN 60898-1 and 25 kA per IEC 60947-2 cover most panelboard and sub-distribution fault levels up to 400 V AC. The fourth pole switches the neutral conductor, which matters for circuits where the neutral must be isolated during maintenance or where phase-to-neutral faults are possible. IP20 with connected conductors is the usual open-panel rating; it assumes the breaker sits inside an enclosure with a door or cover. ## Breaking capacity across standards — one number is not enough This breaker carries three distinct interrupting ratings: 15 kA at 400 V AC per EN 60898-1 (the domestic/light-commercial standard), 25 kA at 400 V AC per IEC 60947-2 (the industrial standard), and 5 kA at 277 V AC per UL 1077 and CSA C22.2 No. 235. At DC, it is rated 15 kA at 60 V per IEC 60947-2, and the maximum DC operating voltage extends to 72 V. The dual standard compliance means the same part can be specified for a machine that ships to both IEC and UL jurisdictions — one BOM line, two certification paths. ## Temperature derating and environment The breaker is rated for ambient operation from -40 °C to 75 °C, but the surrounding temperature influences the thermal trip: maximum 95 % relative humidity at 55 °C, derating to 55 % at 70 °C and 35 % at 75 °C. In a sealed panel with multiple breakers ganged together, the internal temperature rise can push the effective rating down — a panel OEM should check the thermal curve if the breaker is loaded near its limit in a crowded enclosure. ## Physical integration Depth is 76 mm, installation depth is 70 mm, height is 90 mm, width is 72 mm (4 MW). The combined terminal at top and bottom accepts both busbar and conductor connections.","metaTitle":"Siemens 5SY7620-7 SENTRON MCB, 4P C-curve, 15/25 kA","metaDescription":"Siemens SENTRON 5SY7620-7 miniature circuit breaker, 4-pole (3P+N), C-curve, 15 kA per EN 60898 / 25 kA per IEC 60947-2. Current production, sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Miniature Circuit Breakers (MCB)"],"specifications":{"Depth":"76 mm","Width":"72 mm","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","Standard":"IEC / EN 60898-1, IEC / EN 60947-2 / UL1077","Halogen-Free":"Yes","Silicon-Free":"Yes","Design Of Pole":"3P+N","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","Energy Limitation Class":"3","Combined Terminal Bottom":"Yes","Suitability For Operation":"Mechanical engineering / industry","Neutral Conductor Switching":"Yes","Number Of Modular Width Units":"4","Position Of Power Supply Cord":"Any","Tripping Characteristic Class":"C","according to EN 60898 rated value":"15 kA","according to IEC 60947-2 rated value":"25 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":"1.7 W"}},"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=183633&mlfb=5SY7620-7","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SY7620-7/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 5SY7620-7 and get a price?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution channels. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm commercial offer."},{"question":"What compliance documentation does Siemens provide for 5SY7620-7?","answer":"The breaker is certified to IEC/EN 60898-1, IEC/EN 60947-2, and UL 1077/CSA C22.2 No. 235. It is halogen-free and silicon-free. Standard Siemens declarations of conformity (CE/UKCA) and the UL recognition file are available on request."},{"question":"What is the depth of 5SY7620-7?","answer":"The overall depth is 76 mm; the installation depth behind the panel surface is 70 mm."},{"question":"Will 5SY7620-7 drop into a panel specified around 5SY4304-7CV without rewiring?","answer":"The 5SY7620-7 is a 4-pole (3P+N) C-curve breaker in a 4 MW footprint, while the 5SY4304-7CV is a 4-pole B-curve breaker in the same mechanical envelope. Both use the same SENTRON quick-assembly DIN-rail mount and 4 MW width, so the physical swap is straightforward — but the tripping characteristic changes from B to C, which may affect coordination with downstream devices. Verify the selective coordination study before substitution."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY7620-7","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/5SY7620-7 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}}