{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY5104-7CC12","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY5104-7CC12","canonicalUrl":"https://aoctrl.com/siemens/5SY5104-7CC12","factsUrl":"https://aoctrl.com/api/mcp/products/5SY5104-7CC12","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 5SY5 CRH series MCB, 5SY5104-7CC12, 1-pole C4, 220V DC, 10kA breaking capacity.","salesMarkdown":"The Siemens 5SY5104-7CC12 is a 1-pole miniature circuit breaker from the 5SY5 CRH series, rated for 220V DC with a 10kA breaking capacity and a C4 tripping curve. This is a DC-rated MCB, meaning it's built to protect DC circuits — think solar arrays, DC bus bars, battery banks, or control power supplies — where a standard AC breaker might not clear a fault. The C4 curve (4x to 10x rated current magnetic trip) handles moderate inrush from loads like contactor coils or small DC motors without nuisance tripping. Single-pole format saves rail space when you only need to break the positive leg of a DC circuit. The 10kA interrupting rating at 220V DC is the key spec for coordination — make sure the upstream device (fuse or breaker) can handle the let-through energy if this one clears a bolted fault. In a typical telecom or industrial DC distribution panel, this sits downstream of a higher-rated DC disconnect.","metaTitle":"Siemens 5SY5104-7CC12 MCB 5SY5 CRH, 220V DC 10kA 1P C4","metaDescription":"Siemens 5SY5104-7CC12 miniature circuit breaker, 5SY5 CRH series, rated 220V DC, 10kA breaking capacity, 1-pole C4 curve. Active lifecycle stage. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["1-Pole MCB (DIN Rail)"],"specifications":{"title":"5SY5104-7CC12","description":"MCB 5SY5 CRH 220V DC 10KA 1P C4","lifecycle_stage":"current"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/0db9e4f8801b8ac83239d07d38067994.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1265734&mlfb=5SY5104-7CC12"},"ai":{"faq":[{"question":"What is the breaking capacity of this DC MCB?","answer":"The 5SY5104-7CC12 is rated for 10kA breaking capacity at 220V DC, single-pole. That's the short-circuit current it can safely interrupt on a DC circuit."},{"question":"What does the C4 curve mean on this breaker?","answer":"The C4 tripping curve means the magnetic (instantaneous) trip operates between 4 and 10 times the rated current. For this 4A breaker, that's 16A to 40A. It's a good fit for loads with moderate inrush — contactors, small motors, or capacitive DC inputs — without tripping on startup."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY5104-7CC12","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/5SY5104-7CC12 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}}