{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SL4403-7RC","brand":"Siemens","brandSlug":"siemens","productSlug":"5SL4403-7RC","canonicalUrl":"https://aoctrl.com/siemens/5SL4403-7RC","factsUrl":"https://aoctrl.com/api/mcp/products/5SL4403-7RC","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SL4 series miniature circuit breaker, 5SL4403-7RC, 4-pole, C tripping characteristic, 3 A rated current, 415 V AC, 10 kA breaking capacity per EN 60898.","salesMarkdown":"## What this 4-pole MCB does and where it fits The Siemens SENTRON 5SL4403-7RC is a 4-pole miniature circuit breaker with a C tripping characteristic, rated 3 A at 415 V AC and a 10 kA breaking capacity per EN 60898. That C-curve means it handles moderate inrush — typical for motor starters, small transformers, or lighting groups — without nuisance tripping on start-up, while still clearing faults within the 10 kA limit. The 4-pole configuration (3 phases + neutral, though neutral is not switched per the spec) suits three-phase subfeeders in residential or light-commercial distribution boards. ## Terminal capacity and wire sizes Tightening torque range is 2.5 to 3 N·m. ## Environmental and mechanical limits","metaTitle":"Siemens 5SL4403-7RC SENTRON MCB, 4P C 3A 10kA 415V","metaDescription":"Siemens SENTRON 5SL4403-7RC miniature circuit breaker, 4-pole C-curve 3 A, 10 kA breaking capacity at 415 V AC. Current lifecycle, available to order. Request a quote.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["4-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Solid":"0.75 ... 25 mm²","Width":"18 mm","title":"5SL4403-7RC","Height":"90 mm","Sealable":"Yes","Stranded":"0.75 ... 25 mm²","Rated Value":"50 Hz","description":"Miniature circuit breaker 415 V 10kA, 4-pole, C, 3A","Halogen-Free":"Yes","Silicon-Free":"Yes","During Storage":"-40 ... +75 °C","Number of poles":"4","Type of voltage":"AC","lifecycle_stage":"current","Mounting position":"any","Installation depth":"70 mm","Product brand name":"SENTRON","Ambient temperature":"-25 ... +55 °C","Product designation":"Miniature circuit breaker","Protection class IP":"IP20, with connected conductors","Overvoltage category":"III","Design of the product":"5SL miniature circuit breakers","Energy limiting class":"3","Number of width units":"1","Number of poles / Note":"4P","acc. to DIN EN 61346-2":"F","acc. to DIN EN 81346-2":"F","circuit-breaker / Design":"5SL4","Suitability for operation":"Residential buildings/infrastructure","Current / at AC / rated value":"3 A","Tripping characteristic class":"C","acc. to EN 60898 / rated value":"10 kA","Product feature / Touch protection":"Yes","Supply voltage / at AC / rated value":"415 V","with multi-phase operation / at AC / maximum":"440 V","Tightening torque / with screw-type terminals":"2.5 ... 3 N·m","Product function / neutral conductor switching":"No","with multi-phase operation / at AC / rated value":"440 V","with single-phase operation / at AC / rated value":"250 V","Mechanical service life (switching cycles) / typical":"10 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/9100e56a614e6ff3a5b83a05355de6a8.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=32152&mlfb=5SL4403-7RC"},"ai":{"faq":[{"question":"What wire sizes does this breaker accept?","answer":"Solid or stranded copper from 0.75 mm² to 25 mm², terminated with screw terminals at 2.5 to 3 N·m torque."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SL4403-7RC","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/5SL4403-7RC 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}}