{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SM3412-0","brand":"Siemens","brandSlug":"siemens","productSlug":"5SM3412-0","canonicalUrl":"https://aoctrl.com/siemens/5SM3412-0","factsUrl":"https://aoctrl.com/api/mcp/products/5SM3412-0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SM3 series RCCB, 2-pole, 25 A rated, 230 V AC, AC fault current type, instantaneous, 10 kA SCCR, DIN rail mount, IP20.","salesMarkdown":"## What it is and what it does The Siemens SENTRON 5SM3412-0 is a 2-pole residual current circuit breaker (RCCB) rated 25 A at 230 V AC, 50 Hz, with a 10 kA short-circuit current rating (SCCR). It's an instantaneous type for AC fault currents — meaning it trips without intentional delay on sinusoidal AC earth faults, which is the standard choice for general-purpose protection in residential and light commercial distribution boards. ## Ratings and what they mean for fit The 25 A rating holds at 40 °C and 45 °C ambient; derate to 23.5 A at 50 °C, 22 A at 55 °C, 20.5 A at 60 °C, 19 A at 65 °C, and 17.5 A at 70 °C. If your panel runs hot — say near a transformer or in a non-ventilated enclosure — you need to account for that derating curve, not just the nameplate 25 A. Mounts on DIN rail (REG), occupies 2 width units (36 mm wide), with a depth of 70 mm and height of 90 mm. Installation position is any orientation, and the supply can enter from top or bottom — handy when you're retrofitting into a crowded enclosure and can't re-route the busbar. IP20 rated with conductors connected and the distribution board installed — that's typical for enclosed panels, not for exposed or washdown locations. The housing is silicon-free, which matters if the panel is in a coating or potting environment where silicone outgassing can cause adhesion failures. ## Lifecycle and sourcing Lifecycle status is 'current'. This is a standard production part in the SENTRON 5SM3 family, sourced through normal Siemens distribution channels.","metaTitle":"Siemens SENTRON 5SM3412-0 RCCB, 25 A, 2-pole, 230 V AC, 10 k","metaDescription":"Siemens SENTRON 5SM3412-0 RCCB, 25 A rated, 2-pole, 230 V AC, 10 kA SCCR, instantaneous AC type, DIN rail mount, IP20, current production, available 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","at 40 Cel":"25 A","at 45 Cel":"25 A","at 50 Cel":"23.5 A","at 55 Cel":"22 A","at 60 Cel":"20.5 A","at 65 Cel":"19 A","at 70 Cel":"17.5 A","Rated Value":"50 Hz","Mounting type":"DIN rail (REG)","Number of poles":"2","lifecycle_stage":"current","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","Protection class IP":"IP20, if the distribution board is installed, with connected conductors","at AC / rated value":"230 V","Overvoltage category":"III","Design of the product":"Instantaneous","Number of width units":"2","Type of fault current":"AC","acc. to DIN EN 61346-2":"F","acc. to DIN EN 81346-2":"F","I2t-value / permissible":"70 000 A²·s","circuit-breaker / Design":"5SM3","Short-circuit current rating":"10 kA","Product feature / silicon-free":"Yes","For Testing Equipment / Minimum":"100 V","Position / of power supply cord":"top or bottom","Protection against electrical shock":"Finger and back-of-hand safe","Operating current / at AC / rated value":"25 A","Switching function / short-term delayed":"No","Tripping residual current / rated value":"100 mA","Size of installation devices / acc. to DIN 43880":"1","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=489768&mlfb=5SM3412-0","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SM3412-0/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SM3412-0","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/5SM3412-0 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}}