{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SM3618-0KK","brand":"Siemens","brandSlug":"siemens","productSlug":"5SM3618-0KK","canonicalUrl":"https://aoctrl.com/siemens/5SM3618-0KK","factsUrl":"https://aoctrl.com/api/mcp/products/5SM3618-0KK","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SM3618-0KK, 2-pole RCCB, Type AC, rated 100 A, 300 mA trip, instantaneous, 10 kA SCCR, DIN rail mount.","salesMarkdown":"It's an instantaneous design, meaning it clears a ground fault as soon as the residual current exceeds that 300 mA level, with no intentional delay. Supply can enter from top or bottom, which simplifies busbar routing in a crowded distribution board. The IP20 rating applies once the board is installed with conductors connected; it's not a standalone outdoor device. The 45 °C ceiling is the limiting factor for panel placement — if the enclosure interior runs hotter than that, you need to derate or move the RCCB to a cooler zone. The device is silicon-free, which matters for potting and coating compatibility in some industrial environments.","metaTitle":"Siemens 5SM3618-0KK SENTRON RCCB, 2-pole, 100A, 300mA, Type","metaDescription":"Siemens SENTRON 5SM3618-0KK RCCB, 2-pole, 100A rated, 300mA trip, Type AC, instantaneous, 10kA 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":"-5 °C","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","at AC / rated value":"100 A","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","Short-Circuit Current Rating":"10 kA","Number Of Modular Width Units":"2","Product Feature / Silicon-Free":"Yes","acc. to EN 60898 / rated value":"1 kA","For Testing Equipment / Minimum":"100 V","Position / Of Power Supply Cord":"top or bottom","Tripping Fault Current / Rated Value":"300 mA","Supply Voltage Frequency / Rated Value":"50 Hz","according to IEC 61008-1 / rated value":"1 kA","Switching Function / Short-Term Delayed":"No","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":"https://cdn.aoctrl.com/8e82207d5b0b6b37b5d90e1019ba87ab.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=263532&mlfb=5SM3618-0KK","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SM3618-0KK/alternatives.json"},"ai":{"faq":[{"question":"What is the closest functional second-source to 5SM3618-0KK?","answer":"The 5SU9354-7KK16 is a sibling in the same SENTRON family — also 2-pole, Type AC, instantaneous, DIN rail mount, with a 10 kA SCCR and 10 000 cycle life. The key difference is that the 5SU9354-7KK16 is an RCBO (RCD + MCB combined) with a C-curve overcurrent trip, while the 5SM3618-0KK is a pure RCCB with no overcurrent protection. They share the same 70 mm installation depth and 2-module width, so the 5SU9354-7KK16 will physically fit the same panel footprint, but it adds the overcurrent function and changes the wiring because it's 1P+N rather than 2-pole."},{"question":"Will 5SM3618-0KK drop into a panel specified around 5SU9354-7KK16 without rewiring?","answer":"Physically yes — both are 2-module-width DIN rail devices with 70 mm installation depth. But electrically no: the 5SM3618-0KK is a 2-pole RCCB switching both L and N, while the 5SU9354-7KK16 is a 1P+N RCBO switching only the phase. You would need to re-terminate the neutral conductor and account for the missing overcurrent protection."},{"question":"Where can I buy 5SM3618-0KK and how is it quoted?","answer":"This part is 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 price and lead time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SM3618-0KK","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/5SM3618-0KK 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}}