{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY8324-8BB08","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY8324-8BB08","canonicalUrl":"https://aoctrl.com/siemens/5SY8324-8BB08","factsUrl":"https://aoctrl.com/api/mcp/products/5SY8324-8BB08","rawCanonicalId":null},"summary":{"shortDescription":"SENTRON 5SY8324-8BB08 miniature circuit breaker, D tripping characteristic, 12.5 A rated current, 3-pole, 30 kA breaking capacity per IEC 60947-2, 76 mm depth, 54 mm width.","salesMarkdown":"That D-curve means it's built for loads with high inrush — think motor starters, welding equipment, or transformer primaries — where the magnetic trip holds off through the start surge and clears only on a sustained overload or short. Breaking capacity is 30 kA per IEC 60947-2, which puts it in the range for most industrial panel main-feeders and sub-distribution where fault currents can hit that level. For UL 1077 / CSA C22.2 No. 235 installations, the rating is 5 kA — a different standard, so check which code governs your site. Magnetic-only tripping operation means no thermal bimetal; this breaker responds to short-circuit current only. It's the right choice when upstream or downstream devices handle overload protection and you need a dedicated magnetic element for fault isolation in a coordinated system. Mounting position any, so vertical or horizontal busbar orientation works. Ambient range -40 °C to 75 °C, with humidity derating: max 95% RH at 55 °C, dropping to 35% at 75 °C. Vibration rated per IEC 60068-2-6: ±1 mm at 5–25 Hz, 50 m/s² at 25–150 Hz. Sealable design lets you lock the toggle with a padlock for lockout/tagout. ## Electrical ratings and approvals Rated voltage 440 V AC for both single-phase and multi-phase operation. Maximum DC operating voltage is 72 V — usable in DC control circuits but keep the voltage below that. Frequency 50/60 Hz standard. Mechanical service life 10,000 switching cycles typical. Neutral conductor switching is not a function of this unit — it's a straight 3-pole breaker. Classification per DIN EN 61346-2 is F (protective device). Suitability for operation listed as mechanical engineering and industry — that's the target application for this D-curve magnetic-only breaker.","metaTitle":"5SY8324-8BB08 SENTRON MCB, D-curve 12.5A 3P, 30kA IEC","metaDescription":"SENTRON 5SY8324-8BB08 miniature circuit breaker, D-curve, 12.5 A, 3-pole, 30 kA IEC 60947-2. Active production. Quoted to order. 76 mm depth, 54 mm wide.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Miniature Circuit Breakers (MCB)"],"specifications":{"Depth":"76 mm","Width":"54 mm","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","Halogen-Free":"Yes","Silicon-Free":"Yes","Number Of Poles":"3","Type Of Voltage":"AC","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":"12.5 A","protection class IP":"IP20, with connected conductors","Overvoltage Category":"III","Combined Terminal Top":"Yes","Design Of The Product":"Only magnetic tripping operation","Number Of Poles / Note":"3P","acc. to DIN EN 61346-2":"F","Combined Terminal Bottom":"Yes","Suitability For Operation":"Mechanical engineering / industry","Number Of Modular Width Units":"3","Tripping Characteristic Class":"D","Position / Of Power Supply Cord":"Any","acc. to IEC 60947-2 / rated value":"30 kA","Product Feature / Touch Protection":"Yes","Supply Voltage Frequency / Rated Value":"50/60 Hz","Influence Of The Surrounding Temperature":"max. 95% to 55°C, max. 55% to 70°C, max. 35% to 75°C","at AC / acc. to UL 1077 and CSA C22.2 No.235":"5 kA","vibration resistance / acc. to IEC 60068-2-6":"±1mm at 5 to 25Hz; 50m/s² at 25 to 150Hz","Product Function / Neutral Conductor Switching":"No","with multi-phase operation / at AC / rated value":"440 V","operating voltage / at DC / rated value / maximum":"72 V","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":"https://cdn.aoctrl.com/c0819ba7c375f50d9ccd94b4e8144b87.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=41789&mlfb=5SY8324-8BB08","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SY8324-8BB08/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 5SY8324-8BB08 and what is the price?","answer":"Sourced and quoted to order against an RFQ through independent distribution; availability and current pricing are confirmed at quote time."},{"question":"What compliance documentation does this breaker carry?","answer":"Rated per IEC 60947-2 (30 kA) and UL 1077 / CSA C22.2 No. 235 (5 kA). Halogen-free and silicon-free. Overvoltage category III, pollution degree 3. Touch protection built in."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY8324-8BB08","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/5SY8324-8BB08 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}}