{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SL4120-0RC","brand":"Siemens","brandSlug":"siemens","productSlug":"5SL4120-0RC","canonicalUrl":"https://aoctrl.com/siemens/5SL4120-0RC","factsUrl":"https://aoctrl.com/api/mcp/products/5SL4120-0RC","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 5SL4120-0RC, miniature circuit breaker, 20 A, 1-pole, Z characteristic, 10 kA breaking capacity.","salesMarkdown":"The 5SL4120-0RC: The 20 A rating sets the continuous load limit — don't push past 20 A sustained on a single pole. The Z characteristic is the key differentiator here: it's designed for circuits where the load current is steady but short-duration inrush is minimal — think control transformers, relay coils, PLC power supplies, and electronic ballasts. If you're protecting motor circuits or general-purpose socket outlets, a B or C curve is usually the better call.","metaTitle":"Siemens 5SL4120-0RC MCB, 20A 1-Pole Z Curve, 10kA","metaDescription":"Siemens 5SL4120-0RC miniature circuit breaker, 20A, 1-pole, Z characteristic, 10kA breaking capacity. Current lifecycle stage. Available to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["1-Pole MCB (DIN Rail)"],"specifications":{"lifecycle_stage":"current"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/969d2a03ff948cc8b48940093bb94601.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1502362&mlfb=5SL4120-0RC","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SL4120-0RC/alternatives.json"},"ai":{"faq":[{"question":"What is 5SL4120-0RC's breaking capacity and trip curve?","answer":"It is a 20 A, 1-pole miniature circuit breaker with a Z characteristic and 10 kA breaking capacity. The Z curve trips between 2.5 and 5 times rated current, suited for semiconductor and electronic loads."},{"question":"Where can I buy 5SL4120-0RC?","answer":"This part is sourced and quoted 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":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SL4120-0RC","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/5SL4120-0RC 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}}