{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SM3346-0LA01","brand":"Siemens","brandSlug":"siemens","productSlug":"5SM3346-0LA01","canonicalUrl":"https://aoctrl.com/siemens/5SM3346-0LA01","factsUrl":"https://aoctrl.com/api/mcp/products/5SM3346-0LA01","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SM3 series RCCB, 2-pole type AC, short-time delayed, In: 63 A, IΔn: 30 mA, Un AC: 230 V, 10 kA SCCR, with thermal overload protection.","salesMarkdown":"## Siemens SENTRON 5SM3346-0LA01 — 2-pole RCCB, 63 A, 30 mA, Type AC The Siemens SENTRON 5SM3346-0LA01 is a 2-pole residual current operated circuit breaker (RCCB) from the 5SM3 series, designed for 230 V AC single-phase networks at 50 Hz. The short-time delayed characteristic (selective type K per IEC/EN 61008) provides coordination with downstream devices, preventing nuisance tripping from transient leakage currents typical of connected electronics or long cable runs. The 63 A rated current matches the main incoming supply for a typical residential or small commercial single-phase board; it is not a branch-circuit device. The short-time delayed design introduces a deliberate trip delay (typically 10–40 ms per IEC 61008-2-2) so that a downstream MCB or RCCB clears a solid fault first, maintaining supply to healthy circuits — essential for selectivity in multi-tier distribution. The 2-pole construction switches both phase and neutral, which is mandatory for single-phase RCCB applications in many national wiring rules (e.g., VDE 0100, BS 7671). The neutral pole is not switched on the 5SY MCB peers — this RCCB does. Tightening torque is 2.5 to 3 N·m, typical for a 25 mm² terminal — use a torque screwdriver to avoid terminal heating. Mounts on DIN rail (REG) per EN 60715, occupying 4 width units (72 mm at 18 mm/module). Installation depth is 70 mm, fitting standard 100 mm deep enclosures. The mounting position is unrestricted — horizontal, vertical, or inverted all work, though top-feed is conventional. Supply connection can be top or bottom, which simplifies busbar or cable routing in a crowded board. The device is silicon-free, relevant for potting or conformal-coating processes in certain industrial or automotive panel builds. The product includes thermal overload protection, which is unusual for an RCCB and provides additional protection against sustained overcurrents that could damage the device.","metaTitle":"Siemens 5SM3346-0LA01 SENTRON RCCB, 63 A, 30 mA, 2-pole, Typ","metaDescription":"Siemens SENTRON 5SM3346-0LA01 RCCB, 2-pole, 63 A rated current, 30 mA trip, type AC, short-time delayed, 10 kA SCCR, 230 V AC. Current lifecycle. Sourced 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":"2","lifecycle_stage":"current","Mounting position":"any","Installation depth":"70 mm","Product brand name":"SENTRON","Product variations":"With thermal overload protection","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":"Short-time delayed","Number of width units":"4","Type of fault current":"AC","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":"230 V","Surge current resistance / rated value":"3 kA","Switching function / short-term delayed":"Yes","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":"195 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=162033&mlfb=5SM3346-0LA01","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SM3346-0LA01/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 5SM3346-0LA01 and how do I get a price?","answer":"The 5SM3346-0LA01 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 price and lead time."},{"question":"What is the terminal capacity of 5SM3346-0LA01?","answer":"The terminals accept 1.5 to 25 mm² solid or stranded copper conductors. Tightening torque is 2.5 to 3 N·m."},{"question":"What compliance documentation does Siemens provide for 5SM3346-0LA01?","answer":"The device carries the SENTRON brand and is designed to IEC/EN 61008 standards for RCCBs. It is silicon-free and rated for overvoltage category III. Specific RoHS/REACH/UL declarations are available from Siemens upon request through the supply chain."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SM3346-0LA01","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/5SM3346-0LA01 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}}