{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"C25N42D100","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"C25N42D100","canonicalUrl":"https://aoctrl.com/schneider/C25N42D100","factsUrl":"https://aoctrl.com/api/mcp/products/C25N42D100","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric ComPacT NSX series, C25N42D100, 4-pole MCCB with MicroLogic 2.2 electronic trip unit, 100 A at 40 °C, 50 kA Icu at 415 V AC, toggle control, front connections.","salesMarkdown":"It carries a MicroLogic 2.2 electronic trip unit rated 100 A at 40 °C — that is the continuous current it handles without derating at that ambient, so for a 40 °C panel environment this is your full-load ampacity. The 4-pole (4P) configuration with neutral on the left suits three-phase plus neutral distribution boards where you need all poles protected. Breaking capacity is the headline: 50 kA Icu at 415 V AC (the N code rating), 90 kA at 240 V, and still 35 kA at 525 V. The NSX250N frame (device short name NSX250N) tells you the physical platform supports up to 250 A, so this 100 A unit has thermal and magnetic headroom in the same footprint. Mounting is backplate (not DIN rail), with front upside and downside connections at a 35 mm pitch. ## Protection logic and trip unit behaviour Category A utilisation (no intentional short-time delay for selectivity with downstream devices) means this breaker trips instantaneously on short-circuit; if you need zone-selective interlocking, you would step to a Category B trip unit. Local signalling includes a flashing green LED for ready-to-operate, a red LED at 105 % Ir for overload, and an orange LED at 90 % Ir for pre-alarm. That orange LED at 90 % is useful for commissioning — you can see a load approaching the threshold before it trips. ## Integration checklist for the panel builder Five accessory slots allow adding shunt trips, auxiliary contacts, or motor operators without removing the breaker from the panel. Operating altitude: 0–2000 m no derating; 2000–5000 m with derating. Relative humidity 0–95 % non-condensing. Electrical durability is 20,000 cycles at 440 V at half rated current, 10,000 cycles at full rated current; mechanical durability is 20,000 cycles. That is typical for a distribution MCCB — not intended for frequent switching like a contactor, but fine for isolation and backup protection.","metaTitle":"Schneider Electric C25N42D100 ComPacT NSX 100A 4P MCCB, 50kA","metaDescription":"Schneider Electric C25N42D100 ComPacT NSX250N MCCB, 100A at 40°C, 4P, MicroLogic 2.2 trip unit, 50 kA Icu at 415 V AC. Active production. Quoted to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Miniature Circuit Breakers (MCB)"],"specifications":{"Range":"ComPacT","title":"C25N42D100","Depth (D)":"86 mm","Standards":"EN/IEC 60947-2","Width (W)":"140 mm","Height (H)":"161 mm","description":"Circuit breaker ComPacT NSX250N, 50kA at 415VAC, MicroLogic 2.2 trip unit 100A, 4 poles 4d","Control type":"Toggle","Network type":"AC","Product name":"ComPacT NSX","Thermal memory":"20 minutes before and after tripping","Trip unit name":"MicroLogic 2.2","Number of slots":"5 slot(s)","Protection type":"L : for overload protection (long time) So : for short time short-circuit protection with fixed delay I : for instantaneous short-circuit protection","lifecycle_stage":"current","Connection pitch":"35 mm","Local signalling":"Flashing LED (green) for ready to operate LED 105 % Ir (red) for overload LED 90 % Ir (orange) for overload","Mounting support":"Backplate","Neutral position":"Left","Pollution degree":"3 conforming to IEC 60664-1","Trip unit rating":"100 A at 40 °C","Breaking capacity":"90 kA Icu at 220/240 V AC 50/60 Hz conforming to IEC 60947-2 50 kA Icu at 380/415 V AC 50/60 Hz conforming to IEC 60947-2 50 kA Icu at 440 V AC 50/60 Hz conforming to IEC 60947-2 36 kA Icu at 500 V AC 50/60 Hz conforming to IEC 60947-2 35 kA Icu at 525 V AC 50/60 Hz conforming to IEC 60947-2 10 kA Icu at 660/690 V AC 50/60 Hz conforming to IEC 60947-2 85 kA Icu at 240 V AC 50/60 Hz conforming to UL 60947-4-1 50 kA Icu at 480 V AC 50/60 Hz conforming to UL 60947-4-1 15 kA Icu at 600 V AC 50/60 Hz conforming to UL 60947-4-1","Device short name":"NSX250N","Mounting position":"Horizontal and vertical Flat on the back","Network frequency":"50/60 Hz","Poles description":"4P","Relative humidity":"0...95 %","Upside connection":"Front","Device application":"Distribution","Operating altitude":"0...2000 m without derating 2000 m...5000 m with derating","[In] rated current":"100 A at 40 °C","Downside connection":"Front","Overvoltage category":"III","Trip unit technology":"Electronic","Utilisation category":"Category A","Electrical durability":"20000 cycles at 440 V In/2 10000 cycles at 440 V In 10000 cycles at 690 V In/2 5000 cycles at 690 V In","Mechanical durability":"20000 cycles","Breaking capacity code":"N 50 kA 415 V AC","IK degree of protection":"IK07 conforming to IEC 62262","IP degree of protection":"IP40 conforming to IEC 60529","Earth-leakage protection":"Without","Product or component type":"Circuit breaker","Suitability for isolation":"Yes conforming to EN/IEC 60947-2","Neutral protection setting":"0.5 x Ir (3D + N/2) 1 x Ir (4D) No protection (3D)","Power dissipation per pole":"17.6 W","Protected poles description":"4D 3D + N/2 3D + N/2","Circuit breaker mounting mode":"Fixed","[Ui] rated insulation voltage":"800 V AC 50/60 Hz","Trip unit protection functions":"LSoI","[Ue] rated operational voltage":"690 V AC 50/60 Hz","Zone selective interlocking ZSI":"Without","Electrical shock protection class":"Class II on front face","Ambient air temperature for storage":"-50...85 °C","Ambient air temperature for operation":"-25...70 °C","[Ics] rated service breaking capacity":"90 kA at 220/240 V AC 50/60 Hz conforming to IEC 60947-2 50 kA at 380/415 V AC 50/60 Hz conforming to IEC 60947-2 50 kA at 440 V AC 50/60 Hz conforming to IEC 60947-2 36 kA at 500 V AC 50/60 Hz conforming to IEC 60947-2 35 kA at 525 V AC 50/60 Hz conforming to IEC 60947-2 10 kA at 660/690 V AC 50/60 Hz conforming to IEC 60947-2","[Tr] Long-Time Delay Adjustment Range":"400 s at 1.5 x Ir 16 s at 6 x Ir 11 s at 7.2 x Ir","[Uimp] rated impulse withstand voltage":"8 kV","Long-time protection delay adjustment type tr":"Fixed","Short-time protection delay adjustment type tsd":"Fixed","Short-time protection pick-up adjustment type Isd":"Adjustable 9 settings","[Ir] long-time protection pick-up adjustment range":"40...100 A","Instantaneous protection pick-up adjustment type Ii":"Fixed","[Isd] Short-time protection pick-up adjustment range":"1.5...10 x Ir","[Ii] instantaneous protection pick-up adjustment range":"1500 A","Long-time pick-up adjustment type Ir (thermal protection)":"Adjustable 9 settings"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$566.76","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/522dad011cf76f8ee5cd226be87d4ed7.pdf","sourceUrl":"https://www.se.com/ph/en/product/C25N42D100/circuit-breaker-compact-nsx250n-50ka-at-415vac-micrologic-2-2-trip-unit-100a-4-poles-4d/"},"ai":{"faq":[{"question":"What is the breaking capacity of C25N42D100 at 415 V?","answer":"The C25N42D100 carries a 50 kA Icu at 380/415 V AC 50/60 Hz conforming to IEC 60947-2, which is the N breaking capacity code. At 240 V it reaches 90 kA Icu."},{"question":"What trip unit does the C25N42D100 use?","answer":"It uses a MicroLogic 2.2 electronic trip unit rated 100 A at 40 °C, providing L (long-time overload), So (short-time short-circuit with fixed delay), and I (instantaneous short-circuit) protection."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/C25N42D100","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/C25N42D100 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}}