{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SM3612-0KL","brand":"Siemens","brandSlug":"siemens","productSlug":"5SM3612-0KL","canonicalUrl":"https://aoctrl.com/siemens/5SM3612-0KL","factsUrl":"https://aoctrl.com/api/mcp/products/5SM3612-0KL","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SM3 series RCCB, 2-pole, type AC, 25 A, 300 mA, 230 V AC, DIN rail mount, N left.","salesMarkdown":"## What this SENTRON RCCB does on the line The Siemens 5SM3612-0KL is a 2-pole residual current circuit breaker (RCCB) from the SENTRON 5SM3 family, rated 25 A at 230 V AC with a 300 mA tripping residual current. The 300 mA threshold is a ground-fault protection level, not a personnel-safety trip (those are 30 mA or lower); it guards against insulation degradation and fire risk on distribution subfeeds or equipment circuits. Mounts on DIN rail (REG) and occupies 2 width units. Installation depth is 70 mm. The N terminal is on the left side of the device (N left variant). Finger- and back-of-hand safe per the touch-protection rating, so it meets the basic IPXXB requirement for live-part guarding inside an enclosed distribution board. ## Terminal capacity and wiring constraints That 16 mm² upper end is generous for a 25 A device — it lets you land a feeder tail oversized for voltage drop or parallel supply without a reducer. The IP20 rating applies only when the distribution board is installed and conductors are connected; the device itself is not sealed for wet environments. Operating ambient temperature range is -5... +45 °C; storage range is wider at -40... +75 °C. The device is instantaneous-trip (no intentional short-time delay) and silicon-free.","metaTitle":"Siemens 5SM3612-0KL SENTRON RCCB, 25A, 300mA, 2-Pole, Type A","metaDescription":"Siemens 5SM3612-0KL SENTRON RCCB, 2-pole, type AC, 25 A rated current, 300 mA tripping residual current, 230 V AC. DIN rail mount. Current production status. 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 ... 16 mm²","Stranded":"1 ... 16 mm²","Rated Value":"50 Hz","Wertebereich":"-5 ... +45 °C","Mounting type":"DIN rail (REG)","Number of poles":"2","lifecycle_stage":"current","Mounting position":"any","Installation depth":"70 mm","Product brand name":"SENTRON","Product variations":"N left","Ambient temperature":"-40 ... +75 °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":"Instantaneous","Number of width units":"2","Type of fault current":"AC","circuit-breaker / Design":"5SM3","Current / at AC / rated value":"25 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","Switching function / short-term delayed":"No","Tripping residual current / rated value":"300 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":"100 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=8206&mlfb=5SM3612-0KL","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SM3612-0KL/alternatives.json"},"ai":{"faq":[{"question":"What conductor sizes does 5SM3612-0KL accept?","answer":"Solid and stranded copper from 1 mm² up to 16 mm². The screw terminals require a tightening torque between 2.5 and 3 N·m."},{"question":"Where can I buy the 5SM3612-0KL?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution channels. Availability and current pricing are confirmed at quote time — submit an RFQ for the latest position."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SM3612-0KL","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/5SM3612-0KL 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}}