{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SM3314-0","brand":"Siemens","brandSlug":"siemens","productSlug":"5SM3314-0","canonicalUrl":"https://aoctrl.com/siemens/5SM3314-0","factsUrl":"https://aoctrl.com/api/mcp/products/5SM3314-0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON RCCB, 5SM3314-0, 2-pole, Type AC, 40 A rated at 40 °C, 30 mA trip, 10 kA SCCR, DIN rail mount.","salesMarkdown":"The Siemens 5SM3314-0 is a SENTRON RCCB (residual current circuit breaker) — a 2-pole, Type AC instantaneous device rated for 40 A at 40 °C with a 30 mA tripping fault current. It mounts on DIN rail (REG) and is designed for 230 V AC supply at 50 Hz. Rated current is 40 A at 40 °C and 45 °C, derating to 38.4 A at 50 °C, 36.8 A at 55 °C, 35.2 A at 60 °C, 33.6 A at 65 °C, and 32 A at 70 °C. This derating curve matters when the RCCB is installed in a crowded enclosure with elevated ambient — the 40 A rating is only valid up to 45 °C; above that, you must account for the reduced capacity to avoid nuisance tripping from thermal overload. Short-circuit current rating (SCCR) is 10 kA per IEC 61008-1, with a lower 0.5 kA rating per EN 60898. Let-through energy (I²t) is rated at 70 000 A²·s, and the permissible let-through current is 7 500 kA — these values are used for selectivity coordination with upstream overcurrent devices. The RCCB is not a short-circuit protective device; it relies on the upstream MCB or fuse to clear faults, and these figures tell the designer whether the coordination holds. It is intended for indoor, dry-location use inside a panel. Fastens onto DIN rail (REG) per. Depth is 70 mm, height 90 mm. Mounting position is any orientation. Power supply connection can be top or bottom. Silicon-free construction is specified for applications where silicone outgassing could contaminate contacts or optics.","metaTitle":"Siemens 5SM3314-0 SENTRON RCCB, 40A 30mA 2P Type AC","metaDescription":"Siemens 5SM3314-0 SENTRON RCCB, 40A rated at 40°C, 30mA trip, 2-pole, Type AC, 10kA SCCR. DIN rail mount. Current production. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Residual Current Breakers (RCCB/RCBO)"],"specifications":{"Depth":"70 mm","Width":"36 mm","Height":"90 mm","Maximum":"45 °C","Minimum":"-5 °C","Rated Value":"50 Hz","Number Of Poles":"2","lifecycle_stage":"current","Fastening Method":"DIN rail (REG)","Mounting Position":"any","Installation Depth":"70 mm","Product Brand Name":"SENTRON","Maximum Permissible":"75 °C","Minimum Permissible":"-40 °C","Operating Frequency":"50 Hz","Product Designation":"RCCB","acc. to IEC 81346-2":"F","protection class IP":"IP20, if the distribution board is installed, with connected conductors","Overvoltage Category":"III","Design Of The Product":"Instantaneous","Residual Current Type":"AC","acc. to DIN EN 61346-2":"F","I2t value / permissible":"70 000 A²·s","at 40 °C / rated value":"40 A","at 45 °C / rated value":"40 A","at 50 °C / rated value":"38.4 A","at 55 °C / rated value":"36.8 A","at 60 °C / rated value":"35.2 A","at 65 °C / rated value":"33.6 A","at 70 °C / rated value":"32 A","Short-Circuit Current Rating":"10 kA","Number Of Modular Width Units":"2","Product Feature / Silicon-Free":"Yes","acc. to EN 60898 / rated value":"0.5 kA","Position / Of Power Supply Cord":"top or bottom","Let-Through Current / Permissible":"7 500 kA","Tripping Fault Current / Rated Value":"30 mA","supply voltage / at AC / rated value":"230 V","according to IEC 61008-1 / rated value":"0.5 kA","Switching Function / Short-Term Delayed":"No","Touch Protection Against Electrical Shock":"Finger and back-of-hand safe","operational current / at AC / rated value":"40 A","Supply Voltage / For Testing Equipment / Minimum":"100 V","size of installation devices / acc. to DIN 43880":"1","Mechanical Service Life (Switching Cycles) / Typical":"10 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$270.75","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=143527&mlfb=5SM3314-0","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SM3314-0/alternatives.json"},"ai":{"faq":[{"question":"What is the 5SM3314-0 used for?","answer":"It is a 2-pole Type AC residual current circuit breaker (RCCB) rated 40 A at 40 °C, 30 mA trip, 230 V AC, 50 Hz. It provides earth leakage protection in final circuits — typically in residential or commercial distribution boards where personal protection against direct contact is required."},{"question":"What is the SCCR of the 5SM3314-0?","answer":"The short-circuit current rating is 10 kA per IEC 61008-1. It also carries a 0.5 kA rating per EN 60898 for coordination with the upstream MCB."},{"question":"Where can I buy the 5SM3314-0?","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."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SM3314-0","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/5SM3314-0 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}}