{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SJ6250-7","brand":"Siemens","brandSlug":"siemens","productSlug":"5SJ6250-7","canonicalUrl":"https://aoctrl.com/siemens/5SJ6250-7","factsUrl":"https://aoctrl.com/api/mcp/products/5SJ6250-7","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SJ6 series miniature circuit breaker, order code 5SJ6250-7, 2-pole, C-curve, 50 A rated, 400 V AC, 6 kA breaking capacity.","salesMarkdown":"## Siemens 5SJ6250-7 SENTRON MCB — 50 A, 2-Pole, C-Curve The Siemens 5SJ6250-7 is a 2-pole miniature circuit breaker from the SENTRON 5SJ6 series, rated 50 A at 400 V AC with a C-curve tripping characteristic. The C-curve means magnetic trip occurs between 5× and 10× In (250–500 A), so it coordinates downstream of a 63 A or 80 A upstream MCB without losing selectivity on moderate overloads. Maximum operating voltage is 440 V AC for multi-phase circuits; single-phase to neutral is limited by the 400 V line-to-line rating. Terminals accept solid or stranded conductors from 0.75 mm² up to 25 mm² — sized for the 50 A rating (typically 10 mm² or 16 mm² copper). The sealable terminal covers allow the installer to lock the screws after torquing, which some site specs require for tamper-proofing. Installation depth is 70 mm, fitting standard SENTRON distribution boards and most DIN-rail enclosures with that clearance. The 2-module width (36 mm on a standard DIN rail) occupies two positions in the panel schedule. This is a DIN-rail mounted MCB for final subcircuit protection in commercial and light industrial panelboards — lighting, socket outlets, small motor loads, and control transformers. The IP20 rating (with conductors connected) means it lives inside a closed enclosure, not in a wet or dusty environment. Vibration resistance to 50 m/s² at 25–150 Hz and 60 m/s² at 10–150 Hz per IEC 60068-2-6 makes it suitable for installation on machinery panels subject to moderate vibration.","metaTitle":"Siemens 5SJ6250-7 SENTRON MCB, 2-Pole C 50A 400V 6kA","metaDescription":"Siemens 5SJ6250-7 SENTRON miniature circuit breaker, 2-pole, C-curve, 50 A, 400 V AC, 6 kA breaking capacity per EN 60898. Current production. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["2-Pole MCB (DIN Rail)"],"specifications":{"Solid":"0.75 ... 25 mm²","Sealable":"Yes","Stranded":"0.75 ... 25 mm²","Rated Value":"50 Hz","Halogen-Free":"Yes","Silicon-Free":"Yes","Wertebereich":"-20 ... +45 °C","Number of poles":"2","Type of voltage":"AC/DC","lifecycle_stage":"current","Mounting position":"any","Installation depth":"70 mm","Product brand name":"SENTRON","Ambient temperature":"-40 ... +75 °C","Product designation":"Miniature circuit breakers","Protection class IP":"IP20, with connected conductors","Overvoltage category":"3","Design of the product":"Miniature circuit breaker 5SJ6","Energy limiting class":"3","Number of width units":"2","Number of poles / Note":"2","circuit-breaker / Design":"5SJ6","Current / at AC / rated value":"50 A","Tripping characteristic class":"C","at DC / rated value / maximum":"60 V","acc. to EN 60898 / rated value":"6 kA","Position / of power supply cord":"Any","acc. to IEC 60947-2 / rated value":"6 kA","Product feature / Touch protection":"Yes","Supply voltage / at AC / rated value":"400 V","Influence of the surrounding temperature":"Periodically +55°C, max. 95% humidity","Vibration resistance / acc. to IEC 60068-2-6":"50m/s² at 25 to 150Hz and 60m/s² at 10 to 150 Hz","with multi-phase operation / at AC / maximum":"440 V","Mechanical service life (switching cycles) / typical":"20 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=134782&mlfb=5SJ6250-7","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SJ6250-7/alternatives.json"},"ai":{"faq":[{"question":"What are the key ratings of the 5SJ6250-7?","answer":"2-pole, C-curve, 50 A rated current, 400 V AC (max 440 V multi-phase), 6 kA breaking capacity per EN 60898 and IEC 60947-2. Terminal range 0.75–25 mm² solid or stranded."},{"question":"Where can I buy the 5SJ6250-7?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at the time of quote."},{"question":"Does the 5SJ6250-7 have a sealable terminal cover?","answer":"Yes, the sealable feature is listed, allowing the terminal screws to be locked after torquing for tamper-proofing."},{"question":"What is the difference between the 5SJ6250-7 and the 5SL4120-7CC?","answer":"The 5SL4120-7CC is a 1-pole, 20 A C-curve MCB with a 10 kA breaking capacity, while the 5SJ6250-7 is a 2-pole, 50 A unit at 6 kA. They share the same SENTRON platform and DIN-rail footprint, but the 5SJ6250-7 carries double the poles and 2.5× the current rating. The 5SL4120-7CC will not drop into a panel wired for a 2-pole 50 A circuit without rewiring the busbar and load conductors."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SJ6250-7","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/5SJ6250-7 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}}