{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SM1614-0","brand":"Siemens","brandSlug":"siemens","productSlug":"5SM1614-0","canonicalUrl":"https://aoctrl.com/siemens/5SM1614-0","factsUrl":"https://aoctrl.com/api/mcp/products/5SM1614-0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SM1 series RCCB, 2-pole, type AC, 40 A rated, 300 mA trip, 230 V AC, instantaneous, DIN rail mount.","salesMarkdown":"The Siemens SENTRON 5SM1614-0 is a 2-pole residual current circuit breaker (RCCB) from the 5SM1 series, type AC, rated for 40 A at 230 V AC with a 300 mA residual trip threshold. ## Thermal derating and conductor range The 40 A rating holds at 45 °C ambient; above that, current must be derated stepwise — 38.4 A at 50 °C, 36.8 A at 55 °C, down to 32 A at 70 °C. Terminal capacity accepts solid or stranded conductors from 1 to 16 mm², with a tightening torque of 2.5 to 3 N·m on the screw terminals. The IP20 rating applies once installed in a distribution board with conductors connected — not a standalone outdoor device. ## DIN-rail integration and mounting Installation depth is 55 mm, fitting most 80 mm deep enclosures. The device is finger and back-of-hand safe per protection class. Overvoltage category III suits it for fixed installation downstream of the utility meter.","metaTitle":"Siemens SENTRON 5SM1614-0 RCCB, 2-pole 40A 300mA AC, 230V","metaDescription":"Siemens SENTRON 5SM1614-0 RCCB, 2-pole, 40A, 300mA, type AC, 230V AC. Current production. Rated 10kA SCCR. Available 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":"40 A","at 45 Cel":"40 A","at 50 Cel":"38.4 A","at 55 Cel":"36.8 A","at 60 Cel":"35.2 A","at 65 Cel":"33.6 A","at 70 Cel":"32 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":"40 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":"$32.02","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=434458&mlfb=5SM1614-0","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SM1614-0/alternatives.json"},"ai":{"faq":[{"question":"What are the key ratings of the 5SM1614-0?","answer":"It is a 2-pole, type AC RCCB rated 40 A at 230 V AC with a 300 mA residual trip current, instantaneous trip characteristic, and a 10 kA SCCR."},{"question":"Where can I buy the 5SM1614-0?","answer":"This part can be sourced to order against an RFQ through independent distribution channels; availability and current pricing are confirmed at quote time."},{"question":"What conductor sizes does the 5SM1614-0 accept?","answer":"The screw terminals accept solid or stranded conductors from 1 to 16 mm², with a tightening torque of 2.5 to 3 N·m."},{"question":"Does the 5SM1614-0 drop into a panel designed for the 5SL6550-7BB?","answer":"Both are 2-pole DIN-rail RCCBs with similar form factor, but the 5SL6550-7BB is a 50 A, 300 mA type AC unit while the 5SM1614-0 is 40 A. They share the same mounting footprint, so physical fit is the same; the current rating difference may affect selectivity in the panel design."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SM1614-0","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/5SM1614-0 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}}