{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY4332-8FA","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY4332-8FA","canonicalUrl":"https://aoctrl.com/siemens/5SY4332-8FA","factsUrl":"https://aoctrl.com/api/mcp/products/5SY4332-8FA","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY4332-8FA miniature circuit breaker, 3-pole, D-characteristic, 32 A rated, 10 kA breaking capacity at 400 V AC, 3 width units.","salesMarkdown":"The Siemens 5SY4332-8FA is a SENTRON miniature circuit breaker (MCB) rated 32 A at 400 V AC, with a D tripping characteristic and 10 kA breaking capacity per EN 60898. Three-pole construction (3P) in a 54 mm wide, 3-unit housing. Current-production part — sourced to order against an RFQ. ## What the ratings mean for fit The D-curve (tripping characteristic class D) means the magnetic trip activates at 10–20× rated current — designed for loads with high inrush, like transformers, welding equipment, or motor starters. The 10 kA breaking capacity at 400 V AC (per EN 60898) certifies it can safely interrupt a fault current up to that level without welding contacts or cascading upstream. For a 32 A circuit, that's adequate for most industrial sub-distribution panels where the prospective short-circuit current stays under 10 kA. Wire range accepts 0.75 to 35 mm² solid or stranded — covers everything from control-circuit tails to main feeder conductors. Terminal torque spec is 3.5 N·m with screw-type terminals; combined terminal top and bottom allows through-wiring or daisy-chaining without extra connectors. Halogen-free and silicon-free construction matters for installations in clean rooms, semiconductor fabs, or environments where outgassing during a fault could contaminate optics or sensitive surfaces. IP20 with connected conductors — suitable for enclosed panel mounting, not for wet or dust-exposed locations. ## Mounting and integration Snaps onto DIN rail via the quick-assembly system — standard 35 mm rail. Mounting position any; installation depth 70 mm plus the 76 mm overall depth leaves clearance for wiring behind the panel door. Sealable cover option (yes) allows lockout/tagout compliance per site safety procedures.","metaTitle":"Siemens 5SY4332-8FA SENTRON MCB, 32 A, 3P, D-curve, 10 kA","metaDescription":"Siemens 5SY4332-8FA SENTRON miniature circuit breaker, 32 A rated, 3-pole, D tripping characteristic, 10 kA breaking capacity per EN 60898. Current production. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["3-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Solid":"0.75 ... 35 mm²","Width":"54 mm","title":"5SY4332-8FA","Height":"90 mm","Sealable":"Yes","Stranded":"0.75 ... 35 mm²","Rated Value":"50/60 Hz","description":"Miniature circuit breaker 400 V 10kA, 3-pole, 32 A, D=70 mm as counter preliminary miniature circuit breaker","Halogen-Free":"Yes","Silicon-Free":"Yes","Mounting type":"Quick assembly system","During Storage":"-40 ... +75 °C","Number of poles":"3","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","Design of the product":"As automatic meter","Number of width units":"3","Number of poles / Note":"3P","acc. to DIN EN 81346-2":"F","Combined Terminal Bottom":"Yes","Suitability for operation":"Mechanical engineering / industry","Current / at AC / rated value":"32 A","Tripping characteristic class":"D","at DC / rated value / maximum":"72 V","acc. to EN 60898 / rated value":"10 kA","Position / of power supply cord":"Any","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","Tightening torque / with screw-type terminals":"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":"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/c7d48716ed818d77dd7e8b5bdfd99e89.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=349544&mlfb=5SY4332-8FA"},"ai":{"faq":[{"question":"What is the breaking capacity of 5SY4332-8FA?","answer":"10 kA at 400 V AC per EN 60898. That is the standard industrial distribution rating for this class — sufficient for most sub-panels where the prospective fault current is below that threshold."},{"question":"What wire sizes does 5SY4332-8FA accept?","answer":"Solid or stranded conductors from 0.75 mm² up to 35 mm². The screw terminals are rated for 3.5 N·m torque."},{"question":"Where can I buy 5SY4332-8FA?","answer":"Sourced to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm commitment."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY4332-8FA","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/5SY4332-8FA 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}}