{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SL6120-7RC","brand":"Siemens","brandSlug":"siemens","productSlug":"5SL6120-7RC","canonicalUrl":"https://aoctrl.com/siemens/5SL6120-7RC","factsUrl":"https://aoctrl.com/api/mcp/products/5SL6120-7RC","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SL6120-7RC, 1-pole miniature circuit breaker, 20 A rated current, C tripping characteristic, 7.5 kA breaking capacity per EN 60898, 1 MWU width.","salesMarkdown":"## 20 A C-curve MCB for branch-circuit protection The Siemens SENTRON 5SL6120-7RC is a 1-pole miniature circuit breaker rated 20 A with a C tripping characteristic and a 7.5 kA breaking capacity per EN 60898. Rated 415 V AC max single-phase, 440 V AC multi-phase — covers 400/415 V three-phase panels with the hot leg landed on this pole. DC rating tops out at 72 V, so it works in 48 V control circuits but not 125 V DC substation gear. The 7.5 kA breaking capacity at 415 V AC per EN 60898 is enough for most residential and light-commercial service entrances; if your available fault current runs higher, step to the 10 kA variant. Power loss per pole is 1.7 W at rated load in hot condition — negligible in a populated panel but worth a glance if you're packing 40+ breakers in a sealed enclosure. Depth is 76 mm, height 90 mm — fits standard distribution boards and sub-panels without crowding the wiring gutter.","metaTitle":"Siemens SENTRON 5SL6120-7RC MCB 20 A 1-pole C 7.5 kA","metaDescription":"Siemens SENTRON 5SL6120-7RC miniature circuit breaker, 20 A, 1-pole, C characteristic, 7.5 kA breaking capacity per EN 60898. Active production. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["1-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Width":"18 mm","title":"5SL6120-7RC","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","description":"MCB 20 A 1-pole C characteristic 7.5 kA","Halogen-Free":"Yes","Silicon-Free":"Yes","Design Of Pole":"1P","Number Of Poles":"1","lifecycle_stage":"current","Mounting Position":"any","Installation Depth":"70 mm","Product Brand Name":"SENTRON","Degree Of Pollution":"2","Product Designation":"Miniature circuit breaker","protection class IP":"IP20, with connected conductors","Overvoltage Category":"III","Energy Limitation Class":"No","Suitability For Operation":"Residential buildings/infrastructure","at DC rated value maximum":"72 V","Number Of Modular Width Units":"1","Tripping Characteristic Class":"C","supply voltage at AC rated value":"415 V","according to EN 60898 rated value":"7.5 kA","Type Of Voltage Of The Operating Voltage":"AC","with multi-phase operation at AC maximum":"440 V","Value Range Of The Supply Voltage Frequency":"50/60 Hz","with multi-phase operation at AC rated value":"440 V","with single-phase operation at AC rated value":"250 V","Mechanical Service Life (Operating Cycles) Typical":"10 000","Product Extension Installable Supplementary Devices":"Yes","power loss [W] for rated value of the current at AC in hot operating state per pole":"1.7 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/e5562d13cec3f78d16b1ae750ea4f1d0.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=419396&mlfb=5SL6120-7RC"},"ai":{"faq":[{"question":"What is the breaking capacity of the 5SL6120-7RC?","answer":"The 5SL6120-7RC is rated 7.5 kA breaking capacity according to EN 60898 at 415 V AC."},{"question":"Where can I buy the 5SL6120-7RC and how is it quoted?","answer":"The 5SL6120-7RC 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 firm terms."},{"question":"What is the difference between the 5SL6120-7RC and the 5SL4363-7?","answer":"The 5SL4363-7 is a 3-pole version rated 63 A with a 10 kA breaking capacity per EN 60898 and IEC 60947-2, while the 5SL6120-7RC is a 1-pole 20 A unit with 7.5 kA. They share the same SENTRON series, same 76 mm depth and 90 mm height, but the 3-pole unit occupies 3 MWU (54 mm) versus 1 MWU (18 mm). They are not drop-in substitutes — the pole count, current rating, and breaking capacity differ."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SL6120-7RC","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/5SL6120-7RC 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}}