{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SL4305-7RC","brand":"Siemens","brandSlug":"siemens","productSlug":"5SL4305-7RC","canonicalUrl":"https://aoctrl.com/siemens/5SL4305-7RC","factsUrl":"https://aoctrl.com/api/mcp/products/5SL4305-7RC","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SL4 series miniature circuit breaker, 3-pole, C-curve, 0.5 A, 10 kA breaking capacity at 415 V AC, 18 mm wide, IP20.","salesMarkdown":"## What this MCB is and what the ratings mean for fit The Siemens 5SL4305-7RC is a SENTRON miniature circuit breaker (MCB) from the 5SL4 design family, built for residential and infrastructure branch-circuit protection. It is a 3-pole unit rated 0.5 A at 415 V AC with a C tripping characteristic and a 10 kA breaking capacity per EN 60898. The C-curve means it trips at 5 to 10 times rated current — suited for moderate inrush loads like small lighting circuits or control transformers where a B-curve would nuisance-trip but a D-curve would protect too slowly. The 10 kA interrupting rating at 415 V tells you it can safely clear a fault up to that level on a 400/415 V three-phase supply without upstream fuses needing to coordinate. That is the standard residential and light commercial fault level in most European and IEC-based installations. ## Panel fit and environment The 5SL4305-7RC snaps onto a standard 35 mm DIN rail and occupies 1 width unit (18 mm) per pole — three poles wide total. Mounting position is any, so it works in horizontal busbar-fed panels or vertical distribution boards. Depth is 76 mm, installation depth 70 mm. The housing is IP20 with connected conductors, which is the norm for enclosed distribution boards; not a standalone outdoor part. The ambient range is wide: -40 °C to +75 °C, so it survives unheated storage sheds or hot electrical rooms near the kiln. Halogen-free and silicon-free construction matters if the panel is in a clean room or a plant with strict off-gassing specs.","metaTitle":"Siemens 5SL4305-7RC SENTRON MCB, 3P C 0.5A 10kA","metaDescription":"Siemens SENTRON 5SL4305-7RC miniature circuit breaker, 3-pole, C-curve, 0.5 A, 10 kA breaking capacity per EN 60898. Active production. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["3-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Width":"18 mm","title":"5SL4305-7RC","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","Rated Value":"50 Hz","description":"Miniature circuit breaker 415 V 10kA, 3-pole, C, 0.5A","Halogen-Free":"Yes","Silicon-Free":"Yes","Number of poles":"3","Type of voltage":"AC","lifecycle_stage":"current","Mounting position":"any","Installation depth":"70 mm","Product brand name":"SENTRON","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":"3P","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":"0.5 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","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/5b69e2d7e81e2f42b38e770e8cc909de.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=58326&mlfb=5SL4305-7RC"},"ai":{"faq":[{"question":"What is the breaking capacity of 5SL4305-7RC?","answer":"10 kA rated breaking capacity per EN 60898 at 415 V AC. That is the standard residential and light-commercial fault level for IEC installations."},{"question":"Will 5SL4305-7RC drop into a panel specified for 5SL3120-6MB without rewiring?","answer":"No — the 5SL3120-6MB is a 1-pole B-curve 20 A MCB on the same DIN-rail footprint, but the 5SL4305-7RC is a 3-pole C-curve 0.5 A unit. The pole count, current rating, and tripping characteristic are different; the panel would need rewiring and a different upstream coordination study."},{"question":"Where can I buy 5SL4305-7RC?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SL4305-7RC","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/5SL4305-7RC 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}}