{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SM2745-6","brand":"Siemens","brandSlug":"siemens","productSlug":"5SM2745-6","canonicalUrl":"https://aoctrl.com/siemens/5SM2745-6","factsUrl":"https://aoctrl.com/api/mcp/products/5SM2745-6","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON RCD-unit, 4-pole, 63 A at AC, 500 mA Type A residual current, instantaneous, IP20, 50 Hz.","salesMarkdown":"It's an instantaneous unit — no adjustable delay — so it's suited for direct fault clearing in distribution boards where selectivity with downstream devices is managed by the upstream breaker coordination, not the RCD itself. The 63 A rating is the continuous current at AC; at elevated ambient temperatures the unit derates — 58.6 A at 40 °C, 56.7 A at 50 °C, 50.4 A at 70 °C — so if the panel runs hot, the nominal load must stay under the derated figure. That's a common spec for general-purpose protection in commercial distribution where variable-speed drives or electronic loads are present. ## Panel integration Depth is 77 mm, installation depth 70 mm, so it fits standard 80 mm deep distribution boards. Mounting position is any orientation.","metaTitle":"Siemens SENTRON 5SM2745-6 RCD, 4-pole, 63 A, 500 mA, Type A","metaDescription":"Siemens SENTRON 5SM2745-6 RCD unit, 4-pole, 63 A rated, 500 mA Type A residual current. IP20, 50 Hz. Current lifecycle stage. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Residual Current Breakers (RCCB/RCBO)"],"specifications":{"Depth":"77 mm","Width":"124 mm","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"No","Design Of Pole":"4 poles","Number Of Poles":"4","lifecycle_stage":"current","Fastening Method":"REG","Mounting Position":"any","at AC rated value":"63 A","Installation Depth":"70 mm","Product Brand Name":"SENTRON","Product Variations":"for 5SY","Degree Of Pollution":"2","Product Designation":"RCD-unit","protection class IP":"IP20, if the distribution board is installed, with connected conductors","Overvoltage Category":"III","Design Of The Product":"instantaneous","Residual Current Type":"A","at 40 °C rated value":"58.6 A","at 45 °C rated value":"58.59 A","at 50 °C rated value":"56.7 A","at 55 °C rated value":"54.81 A","at 60 °C rated value":"53.55 A","at 65 °C rated value":"52.29 A","at 70 °C rated value":"50.4 A","OFF-delay time adjustable":"No","For Testing Equipment Minimum":"195 V","Number Of Modular Width Units":"3","Position Of Power Supply Cord":"top or bottom","Rated Fault Current Adjustable":"No","Protection Function False Tripping":"Yes","Tripping Fault Current Rated Value":"500 mA","insulation voltage (Ui) rated value":"460 V","Surge Current Resistance Rated Value":"1 kA","Surge Voltage Resistance Rated Value":"4 000 V","Value Range Of The Operating Frequency":"50 Hz","reference code according to IEC 81346-2":"F","Type Of Voltage Of The Operating Voltage":"AC","Value Range Of The Supply Voltage Frequency":"50 Hz","Mechanical Service Life (Operating Cycles) Typical":"10 000","for rated value of the current at AC in hot operating state per pole":"3 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/f5d367cd18a3842c710b5fc975f92e13.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=472552&mlfb=5SM2745-6","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SM2745-6/alternatives.json"},"ai":{"faq":[{"question":"What is the 5SM2745-6 used for?","answer":"It's a 4-pole RCD for 50 Hz AC distribution boards, rated 63 A with 500 mA Type A residual current protection. Used where sinusoidal AC and pulsating DC fault currents need to be detected, typically in commercial or light industrial panels."},{"question":"Where can I buy the 5SM2745-6?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — no stock figures on this page."},{"question":"Does the 5SM2745-6 have an adjustable trip delay?","answer":"No, it's an instantaneous design — the OFF-delay time is not adjustable. No rated fault current adjustment either."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SM2745-6","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/5SM2745-6 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}}