{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SM1346-6","brand":"Siemens","brandSlug":"siemens","productSlug":"5SM1346-6","canonicalUrl":"https://aoctrl.com/siemens/5SM1346-6","factsUrl":"https://aoctrl.com/api/mcp/products/5SM1346-6","rawCanonicalId":null},"summary":{"shortDescription":"SENTRON RCCB, 5SM1346-6, 4-pole, 63 A at 40 °C, 30 mA, Type A, 400 V AC, 10 kA, DIN rail.","salesMarkdown":"The SENTRON 5SM1346-6 is a 4-pole residual current circuit breaker (RCCB) rated 63 A at 40 °C with a 30 mA trip threshold, Type A fault current detection, and a 400 V AC insulation voltage. The 63 A rating is at 40 °C ambient; the datasheet provides a full derating curve up to 70 °C, where it drops to 50.4 A. At 60 °C it is 55.44 A. That derating matters for a pump panel or a lift station controller where ambient inside a sealed NEMA 4X enclosure can climb well above 40 °C. The 30 mA trip sensitivity is standard for personnel protection (indirect contact) per IEC 61008-1. The 0.8 kA rated short-circuit capacity per EN 60898 and IEC 61008-1 is the conditional rating when backed by an upstream overcurrent device; the 10 kA SCCR is the maximum prospective fault current the device itself can withstand. The mechanical endurance of 10 000 switching cycles is typical for an RCCB in a distribution board; it is not a switching device for frequent load interruption. Snap-on DIN rail (REG) mounting, 4 width units (72 mm). The installation depth is 55 mm. Mounting position is any orientation. The supply connection can be top or bottom. The design is instantaneous (no short-time delay), so it trips immediately on a fault current exceeding 30 mA. The silicon-free feature is relevant for applications where silicone outgassing can contaminate contacts or optics — common in automotive paint lines or electronics assembly.","metaTitle":"SENTRON 5SM1346-6 RCCB, 63 A, 30 mA, Type A, 4-Pole","metaDescription":"SENTRON 5SM1346-6 RCCB, 63 A rated at 40 °C, 30 mA trip, Type A, 4-pole, 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":{"Maximum":"45 °C","Minimum":"-25 °C","Mounting type":"DIN rail (REG)","Number Of Poles":"4","lifecycle_stage":"current","Mounting Position":"any","Installation Depth":"55 mm","Product Brand Name":"SENTRON","Maximum Permissible":"60 °C","Minimum Permissible":"-40 °C","Operating frequency":"50 Hz","Product designation":"RCCB","Protection class IP":"IP20, if the distribution board is installed, with connected conductors","at AC / rated value":"400 V","Overvoltage Category":"III","Design of the product":"Instantaneous","Number Of Width Units":"4","Type of fault current":"A","at 40 °C / rated value":"63 A","at 45 °C / rated value":"63 A","at 50 °C / rated value":"60.48 A","at 55 °C / rated value":"57.96 A","at 60 °C / rated value":"55.44 A","at 65 °C / rated value":"52.92 A","at 70 °C / rated value":"50.4 A","power loss [W] / maximum":"20.1 W","Short-circuit current rating":"10 kA","Product Feature / Silicon-Free":"Yes","acc. to EN 60898 / rated value":"0.8 kA","For Testing Equipment / Minimum":"100 V","Position / of power supply cord":"top or bottom","Protection against electrical shock":"Finger and back-of-hand safe","Supply voltage frequency / rated value":"50 Hz","Surge current resistance / rated value":"1 kA","according to IEC 61008-1 / rated value":"0.8 kA","Operating current / at AC / rated value":"63 A","Switching function / short-term delayed":"No","Tripping residual current / rated value":"30 mA","Size of installation devices / acc. to DIN 43880":"1","Mechanical service life (switching cycles) / typical":"10 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$336.04","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=456502&mlfb=5SM1346-6","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SM1346-6/alternatives.json"},"ai":{"faq":[{"question":"What is the closest functional second-source for 5SM1346-6?","answer":"The 5SY4304-7CV is a 4-pole RCCB in the same SENTRON family, but it has a different trip characteristic and current rating — verify the specific 63 A / 30 mA / Type A combination before substituting. The 5SM1346-6 is the exact order code for that specification."},{"question":"Will 5SM1346-6 drop into a panel specified around 5SY4304-7CV without rewiring?","answer":"Both are 4-pole RCCBs on the same DIN-rail footprint (4 width units), so the mechanical fit and terminal spacing are identical. The electrical substitution depends on matching the current rating, trip sensitivity, and fault type — the 5SM1346-6 is 63 A, 30 mA, Type A; confirm the 5SY4304-7CV variant matches before swapping."},{"question":"What is 5SM1346-6's listed maximum ambient temperature?","answer":"The maximum operating ambient temperature is 45 °C, with a permissible storage temperature up to 60 °C. The current rating is derated above 40 °C."},{"question":"What is 5SM1346-6's listed minimum ambient temperature?","answer":"The minimum operating ambient temperature is -25 °C, with a permissible storage temperature down to -40 °C."},{"question":"Where can I buy 5SM1346-6 and how is it quoted?","answer":"The 5SM1346-6 is sourced through independent distribution and quoted to order against an RFQ. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SM1346-6","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/5SM1346-6 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}}