{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SM3446-6LA","brand":"Siemens","brandSlug":"siemens","productSlug":"5SM3446-6LA","canonicalUrl":"https://aoctrl.com/siemens/5SM3446-6LA","factsUrl":"https://aoctrl.com/api/mcp/products/5SM3446-6LA","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SM3 series RCCB, 4-pole, Type A, 63 A rated current, 100 mA residual trip, 400 V AC, 10 kA short-circuit current rating, DIN rail mount, with thermal overload protection.","salesMarkdown":"The 5SM3446-6LA: The 63 A rated current and 100 mA residual trip make this RCCB a fit for sub-distribution boards feeding mixed loads — lighting, small motors, and general socket circuits — where a 30 mA trip would cause nuisance tripping from leakage in long cable runs or equipment with inherent earth leakage. Type A detection covers pulsating DC fault currents (common in single-phase rectifier loads like VFDs and switching power supplies) in addition to sinusoidal AC faults. Overvoltage category III confirms it is rated for fixed-installation distribution panels, not just downstream equipment. Mounts on a DIN rail (REG profile), occupies 4 width units (about 72 mm), and accepts solid or stranded conductors from 1.5 to 25 mm². The screw terminals call for 2.5 to 3 N·m torque.","metaTitle":"Siemens 5SM3446-6LA SENTRON RCCB, 4P, 63 A, 100 mA, Type A","metaDescription":"Siemens 5SM3446-6LA SENTRON 4-pole RCCB, 63 A rated current, 100 mA trip, Type A, 400 V AC, 10 kA SCCR, DIN rail mount. Current lifecycle stage. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Residual Current Breakers (RCCB/RCBO)"],"specifications":{"Solid":"1.5 ... 25 mm²","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","Product variations":"With thermal overload protection","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":"Instantaneous","Number of width units":"4","Type of fault current":"A","circuit-breaker / Design":"5SM3","Short-circuit current rating":"10 kA","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":"1 kA","Switching function / short-term delayed":"No","Tripping residual current / rated value":"100 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":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=50635&mlfb=5SM3446-6LA","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SM3446-6LA/alternatives.json"},"ai":{"faq":[{"question":"What are the key ratings of the 5SM3446-6LA?","answer":"Rated 63 A at 400 V AC, 100 mA residual trip current, Type A fault-current detection, 10 kA short-circuit current rating, 4 poles, DIN rail mount, with thermal overload protection."},{"question":"Where can I buy the 5SM3446-6LA?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"What compliance documentation is available for the 5SM3446-6LA?","answer":"The product carries the SENTRON brand and is designed to IEC/EN standards for RCCBs. Specific RoHS, REACH, and UL documentation should be requested at quote time — the evidence does not list those certifications explicitly for this order code."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SM3446-6LA","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/5SM3446-6LA 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}}