{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SP4492-6","brand":"Siemens","brandSlug":"siemens","productSlug":"5SP4492-6","canonicalUrl":"https://aoctrl.com/siemens/5SP4492-6","factsUrl":"https://aoctrl.com/api/mcp/products/5SP4492-6","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SP series, miniature circuit breaker, 4-pole, B characteristic, 125 A, 10 kA breaking capacity, 400/440 V AC, 6 MW wide, DIN rail mount.","salesMarkdown":"## 125 A, 4-pole B-curve MCB — what the ratings mean The Siemens SENTRON 5SP4492-6 is a 4-pole miniature circuit breaker with a B tripping characteristic, rated 125 A at 400 V AC with a 10 kA breaking capacity per EN 60898. At 125 A per pole this covers heavy branch circuits like large lighting banks, distribution sub-feeds, or resistive heating loads. Snaps onto DIN rail or accepts screw fixing, so it integrates into standard distribution boards or industrial enclosures. At 6 modular width units (108 mm wide) and 70 mm installation depth, it occupies the same footprint as other 4-pole 125 A SENTRON breakers — no surprise when swapping into an existing panel layout. Mounting position is unrestricted, which simplifies layout in tight cabinets. IP20 with connected conductors; IP40 at the handle area with a distribution cover. The -40 °C to +75 °C operating range covers outdoor enclosures in cold climates. Sealable design allows lockout-tagout for isolation procedures.","metaTitle":"Siemens 5SP4492-6 SENTRON MCB, 4P B 125A 10kA","metaDescription":"Siemens SENTRON 5SP4492-6 miniature circuit breaker, 4-pole, B-curve, 125 A, 10 kA per EN 60898, 400/440 V AC. Active production. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Miniature Circuit Breakers (MCB)"],"specifications":{"Depth":"76 mm","Width":"108 mm","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","Halogen-Free":"Yes","Silicon-Free":"Yes","Design Of Pole":"4P","Number Of Poles":"4","lifecycle_stage":"current","Fastening Method":"DIN rail and screw fixing","Mounting Position":"any","at AC rated value":"440 V","Installation Depth":"70 mm","Product Brand Name":"SENTRON","Degree Of Pollution":"3","Product Designation":"Miniature circuit breaker","protection class IP":"IP20 with connected conductors, IP40 in the area of the handle with distribution cover","Overvoltage Category":"3","Tunnel Terminals Top":"Yes","Design Of The Product":"5SP Miniature circuit breakers","Tunnel Terminals Bottom":"Yes","Number Of Modular Width Units":"6","Position Of Power Supply Cord":"Any","Tripping Characteristic Class":"B","supply voltage at AC rated value":"400 V","according to EN 60898 rated value":"10 kA","Influence Of The Surrounding Temperature":"Max. 95% rel. humidity","Type Of Voltage Of The Operating Voltage":"AC","Value Range Of The Supply Voltage Frequency":"50/60 Hz","shock resistance according to IEC 60068-2-27":"150m/s² at 11ms half-sine","with multi-phase operation at AC rated value":"440 V","vibration resistance according to IEC 60068-2-6":"50m/s² at 25 to 150Hz and 60m/s² at 35Hz (4sec)","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":"10.9 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/94a0d592b64f93a0b9aa73eea8920a11.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=184866&mlfb=5SP4492-6","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SP4492-6/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of 5SP4492-6?","answer":"10 kA per EN 60898 at 400 V AC. That is the standard interrupting rating for this class of MCB — adequate for most commercial and light industrial distribution boards where the prospective fault current stays under 10 kA."},{"question":"Where can I buy 5SP4492-6 and how is it quoted?","answer":"Sourced to order against an RFQ through independent distribution channels. Availability and current pricing are confirmed at quote time — no stock count or price figure is published here."},{"question":"Will 5SP4492-6 drop into a panel designed for 5SP4380-7?","answer":"Both are 4-pole SENTRON 5SP breakers on the same DIN-rail footprint, so the mechanical fit is identical. The difference is rating: 5SP4492-6 is 125 A B-curve, while 5SP4380-7 is a lower-current variant. Verify the load current and coordination study before swapping."},{"question":"What compliance documentation is available for 5SP4492-6?","answer":"The SENTRON 5SP series carries CE marking and is designed to EN 60898. Halogen-free and silicon-free per the spec. For specific UL, CSA, or REACH declarations, request the manufacturer's compliance package at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SP4492-6","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/5SP4492-6 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}}