{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY8604-7","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY8604-7","canonicalUrl":"https://aoctrl.com/siemens/5SY8604-7","factsUrl":"https://aoctrl.com/api/mcp/products/5SY8604-7","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY8 series, miniature circuit breaker, 4 A, C-curve, 4-pole (3P+N), 400 V AC, 50 kA breaking capacity, 72 mm wide (4 MW).","salesMarkdown":"## Siemens 5SY8604-7 — 4 A C-Curve MCB, 4-Pole, 50 kA The Siemens 5SY8604-7 is a SENTRON miniature circuit breaker rated 4 A with a C tripping characteristic, 4 poles (3P+N), and a 50 kA breaking capacity at 400 V AC per IEC 60947-2. This is a current-production part in the 5SY8 design series, suitable for panel building and industrial distribution. The 4 A rated current with C-curve means it trips at 5 to 10 times rated current (20–40 A magnetic release), covering motor-start and transformer inrush without nuisance trips. The DC breaking capacity is 15 kA per IEC 60947-2, and under UL 1077 / CSA C22.2 No.235 it carries a 5 kA interrupting rating. The 4-pole (3P+N) configuration protects all three phases and switches the neutral, common in 3-phase 4-wire systems (TN-C-S, TN-S) where the neutral must be disconnected for isolation. ## Mounting and wiring — fits standard DIN rail Snap-on mounting to DIN rail EN 60715, 72 mm wide (4 width units of 18 mm). The 76 mm depth (70 mm installation depth) fits standard enclosures with 80 mm deep gland plates. Conductor cross-section accepts 0.75 to 35 mm² solid or stranded; tightening torque 2.5 to 3.5 N·m with screw terminals. Combined top and bottom terminals simplify daisy-chaining busbars. Ambient temperature range -25 to +55 °C; storage -40 to +75 °C. Mounting position any, which helps in tight enclosures. Rated per IEC 60947-2 (50 kA at 400 V AC, 15 kA DC) and UL 1077 / CSA C22.2 No.235 (5 kA). Overvoltage category III. Halogen-free and silicon-free construction. Sealable — allows lockout/tagout for maintenance isolation. Touch protection integrated.","metaTitle":"Siemens 5SY8604-7 SENTRON MCB, 4 A, C-Curve, 4-Pole, 50 kA","metaDescription":"Siemens 5SY8604-7 SENTRON miniature circuit breaker, 4 A rated, C tripping characteristic, 4-pole (3P+N), 50 kA breaking capacity at 400 V AC. Current lifecycle stage, sourced to o","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["4-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Solid":"0.75 ... 35 mm²","Width":"72 mm","title":"5SY8604-7","Height":"90 mm","Sealable":"Yes","Stranded":"0.75 ... 35 mm²","Rated Value":"50/60 Hz","description":"Miniature circuit breaker 400 V D=70 mm 25 kA according to EN 60947-2, 3P+N, C4","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":"3P+N","acc. to DIN EN 61346-2":"F","acc. to DIN EN 81346-2":"F","Combined Terminal Bottom":"Yes","circuit-breaker / Design":"5SY8","Suitability for operation":"Mechanical engineering / industry","Current / at AC / rated value":"4 A","Tripping characteristic class":"C","at DC / rated value / maximum":"72 V","Position / of power supply cord":"Any","acc. to IEC 60947-2 / rated value":"50 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 DC / acc. to IEC 60947-2 / rated value":"15 kA","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":"Yes","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","AWG number / as coded connectable conductor cross section":"18 ... 4"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/60ca81242310b5305cfd015763a03b23.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=299400&mlfb=5SY8604-7"},"ai":{"faq":[{"question":"What is the breaking capacity of 5SY8604-7?","answer":"50 kA at 400 V AC per IEC 60947-2, 15 kA DC per IEC 60947-2, and 5 kA per UL 1077 / CSA C22.2 No.235."},{"question":"What conductor sizes does 5SY8604-7 accept?","answer":"Solid or stranded conductors from 0.75 mm² up to 35 mm², with a tightening torque of 2.5 to 3.5 N·m."},{"question":"Where can I buy 5SY8604-7 and get current pricing?","answer":"This part is sourced to order against an RFQ through independent distribution. Submit an RFQ for current pricing and availability — confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY8604-7","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/5SY8604-7 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}}