{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SM3646-6KK01","brand":"Siemens","brandSlug":"siemens","productSlug":"5SM3646-6KK01","canonicalUrl":"https://aoctrl.com/siemens/5SM3646-6KK01","factsUrl":"https://aoctrl.com/api/mcp/products/5SM3646-6KK01","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SM3 series RCCB, 4-pole, type A, short-time delayed, In: 63 A, 300 mA, Un AC: 400 V, DIN rail mount.","salesMarkdown":"The Siemens 5SM3646-6KK01 is a 4-pole residual current operated circuit breaker (RCCB) from the SENTRON 5SM3 series, rated 63 A at 400 V AC, 50 Hz, with a 300 mA tripping residual current. Type A detection means it catches sinusoidal AC fault currents plus pulsating DC fault currents up to 6 mA smooth DC — the standard for mixed-load panels with single-phase rectifiers, VFDs, or switching power supplies downstream. The short-time delayed design (selective type) allows a 3 kA surge current resistance without nuisance tripping, so it coordinates with downstream MCBs on motor-start or capacitor inrush. Mounts on DIN rail (REG), occupies 4 width units (72 mm), and accepts conductors from 1.5 to 25 mm² solid or stranded at the screw terminals, torqued to 2.5–3 N·m. ## Panel integration and wiring constraints DIN-rail snap-on, any mounting position. Installation depth is 70 mm; the device body is 77 mm deep, so a 100 mm deep enclosure leaves clearance for wiring. Supply feeds from top or bottom — no mandatory orientation. IP20 with connected conductors, meaning the terminals are finger-safe only when wired inside a distribution board. Ambient range -25 to +45 °C; storage -40 to +75 °C. Overvoltage category III, sized per DIN 43880 size 1.","metaTitle":"Siemens 5SM3646-6KK01 SENTRON RCCB, 4-pole, 63 A, 300 mA, 40","metaDescription":"Siemens 5SM3646-6KK01 SENTRON RCCB, 4-pole, type A, short-time delayed, 63 A, 300 mA, 400 V AC. DIN rail mount, IP20. Current lifecycle, sourced to order. Request quote.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Residual Current Breakers (RCCB/RCBO)"],"specifications":{"Depth":"77 mm","Solid":"1.5 ... 25 mm²","Width":"72 mm","Height":"90 mm","Stranded":"1.5 ... 25 mm²","Rated Value":"50 Hz","Mounting type":"DIN rail (REG)","During Storage":"-40 ... +75 °C","Number of poles":"4","lifecycle_stage":"current","Mounting position":"any","Installation depth":"70 mm","Product brand name":"SENTRON","Ambient temperature":"-25 ... +45 °C","Operating frequency":"50Hz","Product designation":"RCCB","Protection class IP":"IP20, if the distribution board is installed, with connected conductors","Overvoltage category":"III","Design of the product":"Short-time delayed","Number of width units":"4","Type of fault current":"A","acc. to DIN EN 61346-2":"F","acc. to DIN EN 81346-2":"F","circuit-breaker / Design":"5SM3","Current / at AC / rated value":"63 A","Product feature / silicon-free":"Yes","Position / of power supply cord":"top or bottom","Protection against electrical shock":"Finger and back-of-hand safe","Supply voltage / at AC / rated value":"400 V","Surge current resistance / rated value":"3 kA","Switching function / short-term delayed":"Yes","Tripping residual current / rated value":"300 mA","Tightening torque / with screw-type terminals":"2.5 ... 3 N·m","Size of installation devices / acc. to DIN 43880":"1","Supply voltage / for testing equipment / minimum":"100 V","Mechanical service life (switching cycles) / typical":"10 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$502.83","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=282347&mlfb=5SM3646-6KK01","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SM3646-6KK01/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 5SM3646-6KK01?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for the latest position."},{"question":"What conductor sizes does 5SM3646-6KK01 accept?","answer":"Solid and stranded conductors from 1.5 mm² up to 25 mm². Terminal screws torqued to 2.5–3 N·m."},{"question":"What compliance documentation is available for this RCCB?","answer":"The product is designed to DIN EN 61346-2 and DIN EN 81346-2 (function designation F), overvoltage category III, IP20. Silicon-free construction. Standard documentation includes the manufacturer's declaration of conformity; specific RoHS/REACH/UL status should be confirmed at quote time from the supplier's batch documentation."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SM3646-6KK01","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/5SM3646-6KK01 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}}