{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SL3103-7MB","brand":"Siemens","brandSlug":"siemens","productSlug":"5SL3103-7MB","canonicalUrl":"https://aoctrl.com/siemens/5SL3103-7MB","factsUrl":"https://aoctrl.com/api/mcp/products/5SL3103-7MB","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SL3 series, miniature circuit breaker (MCB), 1-pole, C-curve, 3 A rated, 4.5 kA breaking capacity per EN 60898 / IEC 60947-2, 400 V AC, 18 mm width, IP20.","salesMarkdown":"## Siemens 5SL3103-7MB — 1-pole C-curve 3 A MCB, 4.5 kA At 400 V AC (multi-phase) or 250 V AC single-phase, it protects final circuits against overload and short circuit. ## DIN-rail fit and wiring Width is 18 mm — one modular unit on a standard DIN rail. Mounting position is any, which simplifies crowded gland-plate layouts. IP20 with connected conductors — panel-internal use only, not for wet or outdoor locations. ## Ambient and storage limits Derate above 45 °C per the manufacturer's thermal curve.","metaTitle":"Siemens 5SL3103-7MB SENTRON MCB, 1P C 3A 4.5kA","metaDescription":"Siemens 5SL3103-7MB SENTRON miniature circuit breaker, 1-pole C-curve 3 A, 4.5 kA breaking capacity per EN 60898. Active production. Sourced to order. Request quote.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["1-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Solid":"0.75 ... 25 mm²","Width":"18 mm","title":"5SL3103-7MB","Height":"90 mm","Sealable":"Yes","Stranded":"0.75 ... 25 mm²","Rated Value":"50 Hz","description":"Miniature circuit breakers Icn: 4.5 kA, 1P, C-Char, In: 3 A","Halogen-Free":"Yes","Silicon-Free":"Yes","Wertebereich":"-25 ... +45 °C","Number of poles":"1","Type of voltage":"AC","lifecycle_stage":"current","Mounting position":"any","Installation depth":"70 mm","Product brand name":"SENTRON","Ambient temperature":"-40 ... +75 °C","Product designation":"Miniature circuit breaker","Protection class IP":"IP20, with connected conductors","Overvoltage category":"3","Design of the product":"5SL miniature circuit breakers","Energy limiting class":"3","Number of width units":"1","Number of poles / Note":"1P","acc. to DIN EN 61346-2":"F","acc. to DIN EN 81346-2":"F","circuit-breaker / Design":"5SL3","Suitability for operation":"Residential buildings/infrastructure","Current / at AC / rated value":"3 A","Tripping characteristic class":"C","at DC / rated value / maximum":"60 V","acc. to EN 60898 / rated value":"4.5 kA","acc. to IEC 60947-2 / rated value":"4.5 kA","Product feature / Touch protection":"Yes","Supply voltage / at AC / rated value":"400 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":"20 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/8c005a803f7666963fb0cc64abd642de.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=882890&mlfb=5SL3103-7MB"},"ai":{"faq":[{"question":"Where can I buy 5SL3103-7MB and how is it quoted?","answer":"The 5SL3103-7MB is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — no stock count or price is published here."},{"question":"What is the breaking capacity of 5SL3103-7MB?","answer":"The breaking capacity is 4.5 kA per both EN 60898 and IEC 60947-2 at 400 V AC. This is suitable for residential and infrastructure sub-distribution where the prospective short-circuit current stays under that level."},{"question":"What wire sizes does 5SL3103-7MB accept?","answer":"It accepts solid or stranded conductors from 0.75 mm² up to 25 mm². Screw terminals with a tightening torque of 2.5 to 3 N·m."},{"question":"Does 5SL3103-7MB drop into a panel specified for 5SL3120-6MB?","answer":"Both are 1-pole SENTRON 5SL3 MCBs with the same 18 mm width, same DIN-rail footprint, same terminal wire range. The difference is the current rating — 5SL3103-7MB is 3 A, 5SL3120-6MB is 20 A. If the panel was designed for a 20 A circuit, dropping in a 3 A breaker will trip on the load. The mechanical fit is identical; the electrical rating must match the circuit design."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SL3103-7MB","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/5SL3103-7MB 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}}