{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SM1612-0","brand":"Siemens","brandSlug":"siemens","productSlug":"5SM1612-0","canonicalUrl":"https://aoctrl.com/siemens/5SM1612-0","factsUrl":"https://aoctrl.com/api/mcp/products/5SM1612-0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SM1 series RCCB, 2-pole type AC, 25 A rated current, 300 mA residual trip, 230 V AC, DIN rail mount.","salesMarkdown":"## Siemens 5SM1612-0 SENTRON RCCB — 25 A, 300 mA, 2-Pole The Siemens 5SM1612-0 is a 2-pole residual current circuit breaker (RCCB) from the SENTRON 5SM1 series, rated 25 A at 230 V AC with a 300 mA residual trip. Solid and stranded conductors from 1 to 16 mm² are accepted by the screw terminals, torqued to 2.5–3 N·m. ## Thermal Derating and Installation Rated current holds at 25 A up to 45 °C ambient, then derates linearly to 20 A at 70 °C. That derating curve matters when the RCCB is packed into a crowded DIN-rail enclosure with other heat-generating devices — the 45 °C ceiling is the practical design point; above that, the load must be reduced or ventilation added. Finger and back-of-hand safe protection is built in.","metaTitle":"Siemens 5SM1612-0 SENTRON RCCB, 25A, 300mA, 2-Pole","metaDescription":"Siemens 5SM1612-0 SENTRON 5SM1 RCCB, 25A rated, 300mA trip, 2-pole, type AC, 10kA SCCR. Current lifecycle status. 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":{"Solid":"1 ... 16 mm²","Stranded":"1 ... 16 mm²","at 40 Cel":"25 A","at 45 Cel":"25 A","at 50 Cel":"24 A","at 55 Cel":"23 A","at 60 Cel":"22 A","at 65 Cel":"21 A","at 70 Cel":"20 A","Rated Value":"50 Hz","Mounting type":"DIN rail (REG)","During Storage":"-40 ... +60 °C","Number of poles":"2","lifecycle_stage":"current","Mounting position":"any","Installation depth":"55 mm","Product brand name":"SENTRON","Ambient temperature":"-5 ... +45 °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","I2t-value / permissible":"70 000 A²·s","circuit-breaker / Design":"5SM1","Short-circuit current rating":"10 kA","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":"$97.07","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=197189&mlfb=5SM1612-0","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SM1612-0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy the 5SM1612-0 and get a price?","answer":"The 5SM1612-0 is sourced to order against an RFQ through independent distribution channels. Submit a request for quote (RFQ) to confirm current availability and pricing — stock levels and lead times are confirmed at the time of quotation."},{"question":"What conductor sizes does the 5SM1612-0 accept?","answer":"The screw terminals accept solid and stranded conductors from 1 mm² up to 16 mm². Tightening torque is 2.5 to 3 N·m."},{"question":"What is the difference between the 5SM1612-0 and the 5SL6550-7BB?","answer":"The 5SL6550-7BB is a miniature circuit breaker (MCB), not an RCCB — it provides overcurrent and short-circuit protection only, with no residual current detection. The 5SM1612-0 is an RCCB that provides earth leakage protection but no overcurrent protection. They are complementary devices, not substitutes; a panel specified around an MCB cannot drop in an RCCB without rewiring the circuit design."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SM1612-0","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/5SM1612-0 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}}