{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SU1444-1RC40","brand":"Siemens","brandSlug":"siemens","productSlug":"5SU1444-1RC40","canonicalUrl":"https://aoctrl.com/siemens/5SU1444-1RC40","factsUrl":"https://aoctrl.com/api/mcp/products/5SU1444-1RC40","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON RCBO, 40 A, 4-pole, 7 MW, C characteristic, Type AC 100 mA, 10 kA (EN 60898) / 15 kA (IEC 60947-2), 50 Hz.","salesMarkdown":"The Siemens SENTRON 5SU1444-1RC40 is a 40 A, 4-pole RCBO (residual current operated circuit breaker with integral overcurrent protection) in a 7-module-wide housing. It combines a C-curve MCB with a Type AC 100 mA residual current device in one unit, saving a DIN-rail position compared to separate devices. Rated breaking capacity is 10 kA per EN 60898 and 15 kA per IEC 60947-2 at 415 V AC. The higher IEC figure means this RCBO can sit downstream of a transformer or main breaker with up to 15 kA prospective fault current — common in industrial sub-distribution boards. For residential or light commercial panels where the upstream device limits fault current to 10 kA, the EN 60898 rating applies. Occupies 7 modular width units (126 mm) on a DIN rail. Depth is 70 mm, height 90 mm — standard for SENTRON RCBOs. The IP20 rating applies only when the distribution board is installed and conductors are connected, so the board enclosure provides the environmental seal. Rated for 50 Hz operation only — not suitable for 60 Hz networks.","metaTitle":"Siemens 5SU1444-1RC40 SENTRON RCBO 40 A 4P C-curve 100mA","metaDescription":"Siemens SENTRON 5SU1444-1RC40 RCBO, 40 A, 4-pole, C-curve, Type AC 100 mA, 10 kA (EN 60898), 15 kA (IEC 60947-2), 50 Hz. Active lifecycle, quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Residual Current Breakers (RCCB/RCBO)"],"specifications":{"Depth":"70 mm","Width":"126 mm","title":"5SU1444-1RC40","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","description":"RCBO 40 A 4-pole 8 modules C characteristic Type AC 100mA","Design Of Pole":"4P","Number Of Poles":"4","lifecycle_stage":"current","Mounting Position":"any","at AC rated value":"415V","Installation Depth":"70 mm","Product Brand Name":"SENTRON","Degree Of Pollution":"2","Operating Frequency":"50 Hz","Product Designation":"RCBO","protection class IP":"IP20, if the distribution board is installed, with connected conductors","Overvoltage Category":"III","Energy Limitation Class":"3","Number Of Modular Width Units":"7","Position Of Power Supply Cord":"Either top or bottom","Tripping Characteristic Class":"C","Number Of Poles With Protection":"4","according to EN 60898 rated value":"10 kA","insulation voltage (Ui) rated value":"440 V","Supply Voltage Frequency Rated Value":"50 Hz","Surge Voltage Resistance Rated Value":"4 V","according to IEC 60947-2 rated value":"15 kA","Influence Of The Surrounding Temperature":"Max. 95% humidity","Type Of Voltage Of The Operating Voltage":"AC"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/d78ac589c59c4a4c118fb7e0c3052f6a.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=53151&mlfb=5SU1444-1RC40"},"ai":{"faq":[{"question":"Where can I buy 5SU1444-1RC40?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution channels. Availability and current pricing are confirmed at quote time."},{"question":"What is the difference between 5SU1444-1RC40 and the 5SU9354-7KK16?","answer":"The 5SU9354-7KK16 is a 1P+N RCD-operated circuit breaker rated 230/240 V, while the 5SU1444-1RC40 is a 4-pole RCBO rated 415 V. The 5SU1444-1RC40 provides both overcurrent and residual current protection in one device; the 5SU9354-7KK16 is a standalone RCD without integral overcurrent protection. They are not direct drop-in replacements — the 5SU1444-1RC40 requires 7 module widths versus 2, and serves a 4-wire circuit."},{"question":"What compliance documentation is available for 5SU1444-1RC40?","answer":"The part carries IEC/EN ratings for breaking capacity (EN 60898 and IEC 60947-2) and is designed for overvoltage category III and pollution degree 2 installations. Standard SENTRON RCBO documentation includes CE declaration of conformity and manufacturer test certificates; specific RoHS/REACH statements are available from Siemens upon request."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SU1444-1RC40","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/5SU1444-1RC40 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}