{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SM1654-6","brand":"Siemens","brandSlug":"siemens","productSlug":"5SM1654-6","canonicalUrl":"https://aoctrl.com/siemens/5SM1654-6","factsUrl":"https://aoctrl.com/api/mcp/products/5SM1654-6","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SM1 series RCCB, 4-pole, Type A, 40 A rated current, 300 mA trip sensitivity, 500 V AC, instantaneous, DIN-rail mount.","salesMarkdown":"The Siemens SENTRON 5SM1654-6 is a 4-pole residual current circuit breaker (RCCB) in the 5SM1 design, rated 40 A at 500 V AC with 300 mA trip sensitivity and Type A fault-current recognition. The 300 mA sensitivity is a fire-protection level, not a personnel-protection level (that would be 30 mA or lower), so it's sized for the main incoming supply or sub-distribution where the goal is equipment and cable protection rather than shock protection. The I²t value of 70 000 A²·s is the let-through energy it can withstand; pair it with a breaker whose let-through stays under that curve. The derating curve is published: full 40 A up to 45 °C, then 38.4 A at 50 °C, 36.8 A at 55 °C, stepping down to 32 A at 70 °C. Instantaneous tripping characteristic (no intentional short-time delay) means it clears ground faults immediately — no coordination window for selective tripping downstream. If you need time-graded selectivity between RCCBs on the same feeder, look at the S-type or K-type delayed variants instead. ## Panel and mounting IP20 with connected conductors and distribution board installed; finger-safe and back-of-hand-safe terminals.","metaTitle":"Siemens SENTRON 5SM1654-6 RCCB, 40A 300mA Type A 4P","metaDescription":"Siemens SENTRON 5SM1654-6 4-pole RCCB, 40 A rated current, 300 mA trip sensitivity, Type A, 500 V AC. Instantaneous, DIN-rail mount. 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","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)","Number of poles":"4","lifecycle_stage":"current","Mounting position":"any","Installation depth":"55 mm","Product brand name":"SENTRON","Maximum Permissible":"60 °C","Minimum Permissible":"-40 °C","Product designation":"RCCB","Protection class IP":"IP20, if the distribution board is installed, with connected conductors","at AC / rated value":"500 V","Overvoltage category":"III","Design of the product":"Instantaneous","Number of width units":"4","Type of fault current":"A","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","For Testing Equipment / Minimum":"100 V","Position / of power supply cord":"top or bottom","Protection against electrical shock":"Finger and back-of-hand safe","Surge current resistance / rated value":"1 kA","Switching function / short-term delayed":"No","Tripping residual current / rated value":"300 mA","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":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=164769&mlfb=5SM1654-6","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SM1654-6/alternatives.json"},"ai":{"faq":[{"question":"What is the 5SM1654-6 used for?","answer":"It is a 4-pole Type A RCCB rated 40 A / 300 mA / 500 V AC, used for residual current protection in main distribution or sub-distribution panels where the load includes electronic equipment that generates pulsating DC fault currents (VFDs, UPS, rectifiers)."},{"question":"What is the ambient temperature range for the 5SM1654-6?","answer":"Operating ambient is -25 °C to 45 °C; storage/transport range is -40 °C to 60 °C. The rated current of 40 A is valid up to 45 °C, then derates linearly to 32 A at 70 °C."},{"question":"Where can I buy the 5SM1654-6 and get a price?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Submit an RFQ for current availability and pricing — confirmed at quote time, no commitment to buy until you see the number."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SM1654-6","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/5SM1654-6 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}}