{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SM3647-6KL","brand":"Siemens","brandSlug":"siemens","productSlug":"5SM3647-6KL","canonicalUrl":"https://aoctrl.com/siemens/5SM3647-6KL","factsUrl":"https://aoctrl.com/api/mcp/products/5SM3647-6KL","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SM3647-6KL, 4-pole RCCB, Type A, 80 A rated current, 300 mA residual trip, 400 V AC, DIN rail mount.","salesMarkdown":"The Siemens 5SM3647-6KL is a 4-pole residual current circuit breaker (RCCB) from the SENTRON family, rated for 80 A at 400 V AC with a 300 mA Type A residual trip. Type A means it detects pulsating DC fault currents on top of standard AC sine-wave leakage — the kind you get from single-phase rectifiers in VFDs, switching power supplies, or LED drivers. That 300 mA threshold is a high-leakage trip point, typically specified for feeder or submain protection where nuisance tripping from normal equipment leakage needs to be avoided, not for final-circuit personnel protection (which usually calls for 30 mA). It's an instantaneous design (no short-time delay), so it clears fast on fault. Snaps onto DIN rail (REG profile) and occupies 4 width units at 72 mm wide. The N pole is on the left side of the device (N left variant). Screw terminals accept 2.5 to 3 N·m tightening torque.","metaTitle":"Siemens 5SM3647-6KL SENTRON RCCB, 80A 300mA 4P Type A","metaDescription":"Siemens 5SM3647-6KL SENTRON RCCB, 4-pole, Type A, 80 A rated, 300 mA trip, 400 V AC. DIN rail mount. Current lifecycle. Quoted to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Residual Current Breakers (RCCB/RCBO)"],"specifications":{"Depth":"77 mm","Width":"72 mm","Height":"90 mm","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":"N left","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","acc. to DIN EN 61346-2":"F","acc. to DIN EN 81346-2":"F","circuit-breaker / Design":"5SM3","Current / at AC / rated value":"80 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":"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":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=524789&mlfb=5SM3647-6KL","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SM3647-6KL/alternatives.json"},"ai":{"faq":[{"question":"What is the 5SM3647-6KL used for?","answer":"It's a 4-pole residual current circuit breaker (RCCB) for 400 V AC, 80 A feeder circuits, providing Type A ground-fault protection with a 300 mA trip threshold — typically used as a submain or distribution board incomer where high leakage from downstream electronics is expected."},{"question":"Where can I buy the 5SM3647-6KL?","answer":"This part 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 a firm commercial response."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SM3647-6KL","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/5SM3647-6KL 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}}