{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SM1312-6","brand":"Siemens","brandSlug":"siemens","productSlug":"5SM1312-6","canonicalUrl":"https://aoctrl.com/siemens/5SM1312-6","factsUrl":"https://aoctrl.com/api/mcp/products/5SM1312-6","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON RCCB, 5SM1312-6, 2-pole, Type A, 25 A, 30 mA, 230 V AC, 50 Hz, DIN rail mount, current lifecycle.","salesMarkdown":"The Siemens SENTRON 5SM1312-6 is a 2-pole residual current circuit breaker (RCCB) with a 25 A operational current rating and a 30 mA trip threshold, designed for 230 V AC, 50 Hz systems. ## Key ratings and their meaning The 25 A operational current matches common submain and feeder circuits; derating applies above 40 °C: at 50 °C it carries 24 A, at 60 °C 22 A, at 70 °C 20 A (–). The short-circuit current rating is 10 kA per the device's own rating, with a lower 0.5 kA limit when coordinated per EN 60898 or IEC 61008-1 — so on a high-fault panel, verify the upstream breaker's let-through stays within that coordination limit. Snaps onto DIN rail (REG profile), occupies 2 modular width units — standard 18 mm per unit. Installation depth is 55 mm. Silicon-free construction matters for potting or coating processes where silicone contamination can cause adhesion failure.","metaTitle":"Siemens SENTRON 5SM1312-6 RCCB, 25 A, 30 mA, 2-Pole, Type A,","metaDescription":"Siemens SENTRON 5SM1312-6 RCCB, 25 A, 30 mA trip, 2-pole, Type A, 230 V AC, 10 kA SCCR, DIN rail mount. Current lifecycle. Sourced to order against RFQ.","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","Rated Value":"50 Hz","Number Of Poles":"2","lifecycle_stage":"current","Fastening Method":"DIN rail (REG)","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","Overvoltage Category":"III","Design Of The Product":"Instantaneous","Residual Current Type":"A","I2t value / permissible":"70 000 A²·s","at 40 °C / rated value":"25 A","at 45 °C / rated value":"25 A","at 50 °C / rated value":"24 A","at 55 °C / rated value":"23 A","at 60 °C / rated value":"22 A","at 65 °C / rated value":"21 A","at 70 °C / rated value":"20 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","Surge Current Resistance / Rated Value":"1 kA","according to IEC 61008-1 / rated value":"0.5 kA","Switching Function / Short-Term Delayed":"No","operational current / at AC / rated value":"25 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":"$132.02","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=265511&mlfb=5SM1312-6","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SM1312-6/alternatives.json"},"ai":{"faq":[{"question":"What is the 5SM1312-6 used for?","answer":"It is a 2-pole residual current circuit breaker (RCCB) used for personnel and equipment protection against ground faults in 230 V AC, 50 Hz circuits, typically in distribution boards."},{"question":"What are the key ratings of the 5SM1312-6?","answer":"25 A operational current, 30 mA residual trip, Type A, 2-pole, 230 V AC, 50 Hz, 10 kA SCCR, and a mechanical service life of 10 000 switching cycles."},{"question":"How do I get pricing and availability for the 5SM1312-6?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution; availability and current pricing are confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SM1312-6","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/5SM1312-6 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}}