{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"C11B44V050B","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"C11B44V050B","canonicalUrl":"https://aoctrl.com/schneider/C11B44V050B","factsUrl":"https://aoctrl.com/api/mcp/products/C11B44V050B","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric ComPacT NSXm, C11B44V050B, 4-pole MCCB, 50 A at 40 °C, 25 kA at 415 V AC, MicroLogic 4.1 electronic trip unit, integrated earth-leakage protection.","salesMarkdown":"## MCCB for distribution boards — 50 A, 4P, 25 kA The Schneider Electric C11B44V050B is a ComPacT NSXm moulded-case circuit breaker rated 50 A at 40 °C, 4 poles, with a 25 kA breaking capacity at 415 V AC (performance level B). It carries an electronic MicroLogic 4.1 trip unit and integrated earth-leakage protection — the Vigi module is built in, not an add-on. That means one compact package for distribution boards where both overcurrent and ground-fault protection are specified on the same outgoing feeder. For a 50 A feeder in a distribution board with a prospective fault level up to 25 kA, this breaker clears the fault without upstream fuses needing to open — that is full selectivity for most industrial LV supplies. Earth-leakage sensitivity is field-selectable: 30 mA, 100 mA, 300 mA, 500 mA, 1 A, 3 A, or 5 A, for both class A and class AC residual currents. That range covers everything from personnel protection (30 mA) to feeder protection against insulation faults (300 mA–5 A). The integrated Vigi saves a module width compared to a separate RCCB + MCCB combination. Backplate-mounted, 144 mm high, 108 mm wide, 80 mm deep — occupies 12 module pitches at 9 mm each. Connection is front-facing on both line and load sides, with compression lug or busbar terminals. Neutral is on the left.","metaTitle":"Schneider Electric C11B44V050B ComPacT NSXm MCCB, 50 A, 4P,","metaDescription":"Schneider Electric C11B44V050B ComPacT NSXm MCCB, 50 A at 40 °C, 4 poles, 25 kA at 415 V AC, MicroLogic 4.1 electronic trip unit, integrated earth-leakage protection. Sourced to or","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Residual Current Breakers (RCCB/RCBO)"],"specifications":{"Range":"ComPacT","Colour":"Grey (RAL 7016)","Depth (D)":"80 mm","Standards":"EN/IEC 60947-2","Width (W)":"108 mm","Height (H)":"144 mm","9 Mm Pitches":"12 module","Control type":"Toggle","Network type":"AC","Product name":"ComPacT NSXm","Thermal memory":"20 minutes before and after tripping","Trip unit name":"MicroLogic 4.1","lifecycle_stage":"current","Connection pitch":"35 mm with spreaders 27 mm without spreaders","Local signalling":"Flag (green) for presence of auxiliary contacts","Mounting support":"Backplate","Neutral position":"Left","Pollution degree":"3 conforming to IEC 60664-1","Trip unit rating":"50 A at 40 °C","Device short name":"NSXm 63B","Mounting position":"Horizontal and vertical Flat on the back","Network frequency":"50/60 Hz","Performance level":"B 25 kA 415 V AC","Poles description":"4P","Relative humidity":"0...95 %","Upside connection":"Front","Device application":"Distribution","Operating altitude":"2000 m without derating 5000 m with derating","[In] rated current":"50 A at 40 °C","Downside connection":"Front","Connection terminals":"compression lug/busbar","Overvoltage category":"IV","Trip unit technology":"Electronic","Utilisation category":"Category A","Electrical durability":"20000 cycles at 440 V In/2 10000 cycles at 440 V In","Mechanical durability":"20000 cycles","IK degree of protection":"IK07 conforming to IEC 62262","IP degree of protection":"IP40 conforming to IEC 60529","Earth-leakage protection":"Integrated","Earth-leakage sensitivity":"30 mA for class A 100 mA for class A 300 mA for class A 500 mA for class A 1 A for class A 30 mA for class AC 100 mA for class AC 300 mA for class AC 500 mA for class AC 1 A for class AC 3 A for class AC 5 A for class AC","Product or component type":"Earth leakage circuit breaker","Suitability for isolation":"Yes conforming to IEC 60947-2","Power dissipation per pole":"1.2 W","Neutral protection settings":"1 x Ir (4D)","Protected poles description":"4D","Circuit breaker mounting mode":"Fixed","[Ui] rated insulation voltage":"500 V AC 50/60 Hz","Earth-leakage protection class":"Class A Class AC","Trip unit protection functions":"LSoIR","[Ue] rated operational voltage":"440 V AC 50/60 Hz","Electrical shock protection class":"Class II on front face","Ambient air temperature for storage":"-40...85 °C","Ambient air temperature for operation":"-25...70 °C","[Uimp] rated impulse withstand voltage":"8 kV","Number of slots for electrical auxiliaries":"1 slot(s) for auxiliary switch OF 1 slot(s) for alarm switch SD 1 slot(s) for voltage release MN or MX","Long-time protection delay adjustment type tr":"Fixed","Short-time protection delay adjustment type tsd":"Fixed","[Tr] Long-Time Protection Delay Adjustment Range":"200 s at 1.5 x Ir 8 s at 6 x Ir 5 s at 7.2 x Ir","Short-time protection pick-up adjustment type Isd":"Adjustable 9 settings","[Ir] long-time protection pick-up adjustment range":"20...50 A","Instantaneous protection pick-up adjustment type Ii":"Fixed","[Ics] rated service short-circuit breaking capacity":"25 kA at 220...240 V AC 50/60 Hz conforming to IEC 60947-2 16 kA at 380...415 V AC 50/60 Hz conforming to IEC 60947-2 10 kA at 440 V AC 50/60 Hz conforming to IEC 60947-2","[Icu] rated ultimate short-circuit breaking capacity":"25 kA Icu at 220...240 V AC 50/60 Hz conforming to IEC 60947-2 16 kA Icu at 380...415 V AC 50/60 Hz conforming to IEC 60947-2 10 kA Icu at 440 V AC 50/60 Hz conforming to IEC 60947-2","[Isd] Short-time protection pick-up adjustment range":"1.5...10 x Ir","[Ii] instantaneous protection pick-up adjustment range":"750 A","Earth-leakage protection sensitity adjustment type IΔn":"Adjustable","Earth-leakage protection time delay adjustement type Δt":"Adjustable","Long-time pick-up adjustment type Ir (thermal protection)":"Adjustable 9 settings","[Δt] Earth-leakage protection time delay adjustment range":"0 ms 60 ms 150 ms 500 ms 1000 ms","[IΔn] earth-leakage protection sensitivity adjustment range":"30 mA 100 mA 300 mA 500 mA 1 A 3 A 5 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/1ec56ea01405fb1402b0deecf0ee36e3.pdf","sourceUrl":"https://www.se.com/vn/en/product/C11B44V050B/circuit-breaker-compact-nsxm-63b-25ka-415vac-4-poles-micrologic-4-1-trip-unit-50a-lugs-busbars/","alternativesUrl":"https://aoctrl.com/api/mcp/products/C11B44V050B/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy C11B44V050B and how do I get a price?","answer":"The C11B44V050B is sourced to order against an RFQ through independent distribution channels. Submit an RFQ to confirm current availability and pricing at quote time."},{"question":"What is C11B44V050B's listed range and colour?","answer":"The range is ComPacT, and the colour is Grey (RAL 7016)."},{"question":"What compliance documentation does this brand provide for C11B44V050B?","answer":"The breaker is certified to EN/IEC 60947-2. The manufacturer typically provides a Declaration of Conformity covering the applicable EU directives; specific documentation (RoHS, REACH, UL) should be requested at RFQ time as it may vary by production batch."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/C11B44V050B","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/schneider/C11B44V050B 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}}