{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SM2735-0","brand":"Siemens","brandSlug":"siemens","productSlug":"5SM2735-0","canonicalUrl":"https://aoctrl.com/siemens/5SM2735-0","factsUrl":"https://aoctrl.com/api/mcp/products/5SM2735-0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SM2735-0 RC unit for 5SY, 3-pole, type AC, In: 63 A, 500 mA, Un AC: 400 V, 50 Hz, DIN rail mount.","salesMarkdown":"It's rated 63 A at 230/400 V AC, 50 Hz, with a 500 mA type AC residual trip — meaning it detects sinusoidal AC fault currents only, not pulsed DC or smooth DC. That 500 mA threshold is a higher trip level than the typical 30 mA or 100 mA units, so it's suited for circuits where nuisance tripping from normal leakage (long cable runs, industrial heaters, VFD line filters) would be a problem — think sub-distribution boards or feeder circuits, not socket-outlet final circuits that need 30 mA personal protection. Snaps onto DIN rail (REG profile) and occupies three width units (about 54 mm). Installation depth is 70 mm — check your enclosure depth before committing. Mounting position is any, which helps when you're cramming gear into a tight panel. IP20 rating applies only when the distribution board is installed with connected conductors — it's an open-back device, not a standalone enclosure. ## Environmental limits and mechanical life","metaTitle":"Siemens SENTRON 5SM2735-0 RC Unit, 63 A, 500 mA, Type AC","metaDescription":"Siemens SENTRON 5SM2735-0 RC unit for 5SY, 3-pole, type AC, 63 A rated current, 500 mA residual trip, 50 Hz, DIN rail mount. Current lifecycle stage. 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":"-5 °C","Rated Value":"50 Hz","Mounting type":"DIN rail (REG)","Number of poles":"3","lifecycle_stage":"current","Mounting position":"any","Installation depth":"70 mm","Product brand name":"SENTRON","Product variations":"for 5SY","Maximum Permissible":"75 °C","Minimum Permissible":"-40 °C","Operating frequency":"50 Hz","Product designation":"RC unit","Protection class IP":"IP20, if the distribution board is installed, with connected conductors","at AC / rated value":"230/400 V","Overvoltage category":"III","Design of the product":"Instantaneous","Number of width units":"3","Type of fault current":"AC","circuit-breaker / Design":"5SM2","Product feature / silicon-free":"Yes","For Testing Equipment / Minimum":"195 V","Position / of power supply cord":"top or bottom","Insulation voltage / rated value":"460 V","Protection against electrical shock":"Finger and back-of-hand safe","Operating current / at AC / rated value":"63 A","Switching function / short-term delayed":"No","Tripping residual current / rated value":"500 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":"https://cdn.aoctrl.com/4cb71c684e061a611920b813eb021171.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=348664&mlfb=5SM2735-0","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SM2735-0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 5SM2735-0 and what is the price?","answer":"We source this part to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm quote."},{"question":"What does the 500 mA type AC trip mean for my application?","answer":"It trips on sinusoidal AC fault currents only, at a 500 mA threshold. That's a higher trip level than 30 mA or 100 mA units, so it's suited for feeder circuits or sub-distribution where normal leakage from long cable runs or industrial loads would cause nuisance tripping on a more sensitive device. It will not detect pulsed DC or smooth DC faults."},{"question":"Will 5SM2735-0 fit in a panel designed for 5SQ2370-2YA05?","answer":"No — the 5SQ series is a miniature circuit breaker (MCB), while 5SM2735-0 is a residual current unit (RC unit) that must be paired with a 5SY MCB. They are functionally different devices and not drop-in interchangeable. The 5SQ has a different depth (55 mm vs 70 mm) and a different wiring scheme."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SM2735-0","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/5SM2735-0 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}}