{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SM1347-0","brand":"Siemens","brandSlug":"siemens","productSlug":"5SM1347-0","canonicalUrl":"https://aoctrl.com/siemens/5SM1347-0","factsUrl":"https://aoctrl.com/api/mcp/products/5SM1347-0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SM1 series, RCCB, 4-pole, type AC, 80 A, 30 mA, 400 V AC, DIN rail mount, instantaneous.","salesMarkdown":"## 80 A, 30 mA, 400 V — the ratings that decide fit The Siemens 5SM1347-0 is a 4-pole residual current operated circuit breaker (RCCB) from the SENTRON 5SM1 series, rated 80 A at 400 V AC with a 30 mA trip threshold. The 80 A frame covers the main incomer for a small distribution board or a heavy submain; at 45 °C ambient it holds the full 80 A, and the derating curve is published stepwise down to 64 A at 70 °C, so you can size the upstream protective device knowing exactly where the RCCB thermally limits. Type AC means it detects sinusoidal AC residual currents only — not pulsed DC or smooth DC. ## Panel integration — DIN rail, 4 MW, top or bottom feed Snaps onto DIN rail (REG profile), occupies 4 width units at 55 mm installation depth. Terminal capacity accepts 1.5 to 25 mm² solid or stranded copper; tighten to 2.5–3 N·m. The IP20 rating applies only when the distribution board is installed and conductors are connected — it's not a standalone IP20 device; the enclosure provides the environmental seal.","metaTitle":"Siemens 5SM1347-0 SENTRON RCCB, 80A 30mA 400V 4-pole","metaDescription":"Siemens SENTRON 5SM1347-0 4-pole RCCB, type AC, 80 A rated, 30 mA trip, 400 V AC. 10 kA SCCR. DIN rail mount. Active 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":{"Solid":"1.5 ... 25 mm²","Stranded":"1.5 ... 25 mm²","at 40 Cel":"80 A","at 45 Cel":"80 A","at 50 Cel":"76.8 A","at 55 Cel":"73.6 A","at 60 Cel":"70.4 A","at 65 Cel":"67.2 A","at 70 Cel":"64 A","Rated Value":"50 Hz","Mounting type":"DIN rail (REG)","During Storage":"-40 ... +60 °C","Number of poles":"4","lifecycle_stage":"current","Mounting position":"any","Installation depth":"55 mm","Product brand name":"SENTRON","Ambient temperature":"-5 ... +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":"AC","I2t-value / permissible":"70 000 A²·s","circuit-breaker / Design":"5SM1","Short-circuit current rating":"10 kA","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","Switching function / short-term delayed":"No","Tripping residual current / rated value":"30 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=412495&mlfb=5SM1347-0","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SM1347-0/alternatives.json"},"ai":{"faq":[{"question":"What is the 5SM1347-0 used for?","answer":"It is a 4-pole residual current circuit breaker (RCCB) rated 80 A, 30 mA, 400 V AC, type AC, used for personal protection against direct contact in AC circuits where the residual current is sinusoidal. Common in distribution boards for general socket outlets, lighting circuits, and wet-area subcircuits."},{"question":"Where can I buy the 5SM1347-0?","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 a firm commitment."},{"question":"What are the terminal wire sizes for the 5SM1347-0?","answer":"Solid and stranded copper from 1.5 mm² up to 25 mm². Tightening torque is 2.5 to 3 N·m."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SM1347-0","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/5SM1347-0 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}}