{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY7432-8","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY7432-8","canonicalUrl":"https://aoctrl.com/siemens/5SY7432-8","factsUrl":"https://aoctrl.com/api/mcp/products/5SY7432-8","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY7432-8, 4-pole miniature circuit breaker, D tripping characteristic, 32 A rated, 25 kA breaking capacity per IEC 60947-2, 15 kA per EN 60898.","salesMarkdown":"## Siemens 5SY7432-8 — 4-pole D-curve MCB, 32 A, 25 kA The Siemens 5SY7432-8 is a SENTRON miniature circuit breaker with a 4-pole design (4P) and a D tripping characteristic, rated at 32 A at 35 °C. It provides a breaking capacity of 25 kA per IEC 60947-2 and 15 kA per EN 60898, making it suitable for high-fault-current industrial panels where motor or transformer inrush currents would nuisance-trip a C-curve device. At 32 A rated current, it handles continuous loads up to that value at 35 °C ambient; derate to 30.46 A at 40 °C, 29.66 A at 45 °C, 28.86 A at 50 °C, 28 A at 55 °C, and 27.14 A at 60 °C per the published curve. The 15 kA rating per EN 60898 covers residential and commercial branch-circuit applications. Both ratings are AC only, 50/60 Hz. The quick assembly system (fastening method) snaps onto the rail without tools. Combined terminal top and bottom simplifies busbar and feed-through wiring. Touch protection (product feature) is built in per the terminal design.","metaTitle":"Siemens 5SY7432-8 SENTRON MCB, 4P D 32 A, 25 kA IEC","metaDescription":"Siemens 5SY7432-8 SENTRON miniature circuit breaker, 4-pole, D-curve, 32 A rated, 25 kA (IEC 60947-2) / 15 kA (EN 60898). Current production, sourced to order. Quoted 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","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","Installation Depth":"70 mm","Product Brand Name":"SENTRON","Degree Of Pollution":"3","Product Designation":"Miniature circuit breaker","at AC / rated value":"32 A","protection class IP":"IP20, with connected conductors","Overvoltage Category":"III","Combined Terminal Top":"Yes","according to EN 61346-2":"F","at 35 °C / rated value":"32 A","at 40 °C / rated value":"30.46 A","at 45 °C / rated value":"29.66 A","at 50 °C / rated value":"28.86 A","at 55 °C / rated value":"28 A","at 60 °C / rated value":"27.14 A","Combined Terminal Bottom":"Yes","according to IEC 81346-2":"F","Suitability For Operation":"Mechanical engineering / industry","Number Of Modular Width Units":"4","Tripping Characteristic Class":"D","Position / Of Power Supply Cord":"Any","Product Feature / Touch Protection":"Yes","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","Value Range / Of The Supply Voltage Frequency":"50/60 Hz","at DC / according to IEC 60947-2 / rated value":"15 kA","Product Component / Neutral Conductor Switching":"No","with multi-phase operation / at AC / rated value":"440 V","operating voltage / at DC / rated value / maximum":"72 V","vibration resistance / according to IEC 60068-2-6":"±1mm at 5 to 25Hz; 50m/s² at 25 to 150Hz","with single-phase operation / at AC / rated value":"440 V","Mechanical Service Life (Switching Cycles) / Typical":"10 000"}},"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=224471&mlfb=5SY7432-8","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SY7432-8/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of the 5SY7432-8?","answer":"25 kA per IEC 60947-2 and 15 kA per EN 60898, both at 230/400 V AC."},{"question":"What does the D-curve mean on this MCB?","answer":"The D tripping characteristic means the magnetic trip operates at 10–20 times the rated current, so it is designed for loads with high inrush such as motors, transformers, and welding equipment."},{"question":"Where can I buy the 5SY7432-8 and how is it quoted?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY7432-8","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/5SY7432-8 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}}