{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY8232-8BB08","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY8232-8BB08","canonicalUrl":"https://aoctrl.com/siemens/5SY8232-8BB08","factsUrl":"https://aoctrl.com/api/mcp/products/5SY8232-8BB08","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY8232-8BB08, 2-pole miniature circuit breaker, D tripping characteristic, 30 kA breaking capacity at 400 V AC per IEC 60947-2, width 36 mm, depth 76 mm.","salesMarkdown":"Two poles, no neutral switching, so it lands on a 2-module DIN-rail footprint (36 mm wide, 76 mm deep) and mounts in any orientation. Under UL 1077 it's rated 5 kA, so if the panel ships to a North American site and the spec calls for UL 489 branch-circuit protection, verify the application; this is a supplementary protector per UL 1077. ## D curve — what it means for the line That's the right window for loads that draw a short-duration surge — think a 15 kW motor direct-on-line or a bank of control transformers. The breaker ignores the inrush and only clears on a genuine bolted fault. No thermal element in the trip mechanism (the design is 'only magnetic tripping operation'), so ambient temperature doesn't shift the trip threshold the way it would on a thermal-magnetic. That's useful in a warm cabinet or a panel near a furnace line. The surrounding temperature influence is spelled out: max 95% RH at 55 °C, derating to 55% at 70 °C and 35% at 75 °C. ## Mechanical and environmental Vibration resistance per IEC 60068-2-6: ±1 mm displacement at 5–25 Hz, then 50 m/s² acceleration at 25–150 Hz. That's a standard industrial vibration profile — the breaker holds its contacts and trip calibration under pump or conveyor vibration. IP20 with connected conductors — finger-safe terminals once wired, but the busbar area is open. Sealable (yes), halogen-free, silicon-free. The quick-assembly fastening system is the standard SENTRON DIN-rail clip; no tools needed for mounting or removal. The breaker accepts add-on auxiliary switches, shunt trips, and alarm contacts via the product extension interface. That means the same physical unit can be specified for a panel that later needs remote trip indication or undervoltage release — the auxiliaries clip on the right side without replacing the breaker.","metaTitle":"Siemens 5SY8232-8BB08 SENTRON MCB, D Curve, 2-Pole, 30 kA IE","metaDescription":"Siemens 5SY8232-8BB08 SENTRON miniature circuit breaker, D tripping characteristic, 2-pole, 30 kA breaking capacity per IEC 60947-2. Active production, available to order. Depth 76","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["2-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Width":"36 mm","title":"5SY8232-8BB08","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","description":"Miniature circuit breaker 400 V 25kA, 2-pole, 32 A, D=70 mm only magnetic tripping","Halogen-Free":"Yes","Silicon-Free":"Yes","Design Of Pole":"2P","Number Of Poles":"2","lifecycle_stage":"current","Fastening Method":"Quick assembly system","Mounting Position":"any","at AC rated value":"400 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","Design Of The Product":"Only magnetic tripping operation","Combined Terminal Bottom":"Yes","Suitability For Operation":"Mechanical engineering / industry","Neutral Conductor Switching":"No","Number Of Modular Width Units":"2","Position Of Power Supply Cord":"Any","Tripping Characteristic Class":"D","according to IEC 60947-2 rated value":"30 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","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","power loss [W] for rated value of the current at AC in hot operating state per pole":"2.1 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/ddbfd2772e2e246fac01464b3b1c5163.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=454618&mlfb=5SY8232-8BB08"},"ai":{"faq":[{"question":"What is the breaking capacity of the 5SY8232-8BB08?","answer":"30 kA at 400 V AC per IEC 60947-2, and 5 kA per UL 1077 / CSA C22.2 No.235. The IEC rating is the one that governs for most industrial panels outside North America."},{"question":"Where can I buy the 5SY8232-8BB08?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — no stock figures or lead-time numbers are published here."},{"question":"Will the 5SY8232-8BB08 fit in a panel built for the 5SY7206-7CC?","answer":"Both are 2-module wide (36 mm) SENTRON breakers on the same DIN-rail footprint, so the mechanical fit is identical. The difference is the tripping characteristic and the current rating — verify the coordination study before swapping."},{"question":"What compliance documentation is available for the 5SY8232-8BB08?","answer":"The breaker carries IEC 60947-2 ratings, UL 1077 and CSA C22.2 No.235 certifications, and is halogen-free and silicon-free. Standard Siemens SENTRON declarations (CE, UKCA, RoHS, REACH) apply; request the specific declaration of conformity at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY8232-8BB08","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/5SY8232-8BB08 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}}