{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"C40F4","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"C40F4","canonicalUrl":"https://aoctrl.com/schneider/C40F4","factsUrl":"https://aoctrl.com/api/mcp/products/C40F4","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric ComPacT NSX400F basic frame, C40F4, 400 A at 40 °C, 36 kA Icu at 415 VAC, 4 poles, without trip unit, fixed mount.","salesMarkdown":"## What this frame is and what it needs The C40F4 is a ComPacT NSX400F basic frame — a 4-pole, 400 A rated (at 40 °C) air circuit breaker chassis that ships without a trip unit. You add the protection module (Micrologic electronic or thermal-magnetic) separately to set the overload and short-circuit curves. This is the standard way Schneider sells the NSX line above 100 A: the frame and the trip unit are separate line items so you match the protection to the load without swapping the whole breaker. Breaking capacity varies by voltage: 85 kA at 240 V AC (UL 508), 36 kA Icu at 380/415 V AC (IEC 60947-2), and 25 kA Icu at 500 V AC. At 690 V AC it still holds 10 kA Icu, enough for most industrial line-to-line faults. Because it is a frame without a trip unit, stocking patterns vary — distributors often carry the frame and the trip units separately. The frame itself is a single mechanical assembly; the buying decision is pairing it with the right Micrologic or TM-D trip unit for your load. Fixed-mount design for backplate installation. Front-connected both top and bottom, so cabling is accessible without reaching behind the panel. IP40 front face protection keeps dust and tools out of the mechanism; IK07 impact rating means it shrugs off accidental knocks during installation. Overvoltage category III suits fixed-installation distribution boards. Certified to EN/IEC 60947-2 (low-voltage switchgear and controlgear — circuit breakers) and UL 60947-4-1 (motor-protective circuit breakers). The dual listing covers both IEC and UL installations, so the same frame works in a European panel or a North American motor control center. Rated insulation voltage 800 V AC, rated impulse withstand 8 kV. The Class II insulation on the front face means no protective earth connection is required for the operator interface — the toggle and escutcheon are double-insulated.","metaTitle":"C40F4 ComPacT NSX400F Basic Frame, 400 A, 36 kA at 415 V","metaDescription":"C40F4 ComPacT NSX400F basic frame, 400 A rated at 40 °C, 36 kA breaking at 415 VAC. Current lifecycle stage, sourced to order against RFQ. IEC/UL listed.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Miniature Circuit Breakers (MCB)"],"specifications":{"Range":"ComPacT","title":"C40F4","Depth (D)":"110 mm","Standards":"EN/IEC 60947-2 UL 60947-4-1","Width (W)":"185 mm","Height (H)":"255 mm","description":"circuit breaker basic frame, ComPacT NSX400F, 36 kA at 415 VAC 50/60 Hz, 400 A, without trip unit, 4 poles","Control type":"Toggle","Network type":"AC","Product name":"ComPacT NSX","Mounting mode":"Fixed","Protection type":"Without protection","lifecycle_stage":"current","Connection pitch":"45 mm","Mounting support":"Backplate","Neutral position":"Left","Pollution degree":"3 conforming to IEC 60664-1","Breaking capacity":"85 kA at 240 V AC 50/60 Hz conforming to UL 508 25 kA Icu at 500 V AC 50/60 Hz conforming to IEC 60947-2 36 kA Icu at 380/415 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 40 kA Icu at 220/240 V AC 50/60 Hz conforming to IEC 60947-2 35 kA at 480 V AC 50/60 Hz conforming to UL 508 20 kA at 600 V AC 50/60 Hz conforming to UL 508 20 kA Icu at 525 V AC 50/60 Hz conforming to IEC 60947-2 30 kA Icu at 440 V AC 50/60 Hz conforming to IEC 60947-2","Device short name":"NSX400F","Network frequency":"50/60 Hz","Poles description":"4P","Upside connection":"Front","Device application":"Distribution","[In] rated current":"400 A at 40 °C","Downside connection":"Front","Overvoltage category":"III","Utilisation category":"Category A","Electrical durability":"12000 cycles 440 V AC 50/60 Hz In/2 conforming to IEC 60947-2 3000 cycles 690 V AC 50/60 Hz In conforming to IEC 60947-2 6000 cycles 440 V AC 50/60 Hz In conforming to IEC 60947-2 6000 cycles 690 V AC 50/60 Hz In/2 conforming to IEC 60947-2","Mechanical durability":"15000 cycles conforming to IEC 60947-2","Breaking capacity code":"F 36 kA 415 V AC","IK degree of protection":"IK07 conforming to IEC 62262","IP degree of protection":"IP40 conforming to IEC 60529","Product or component type":"Basic frame","Suitability for isolation":"Yes conforming to EN/IEC 60947-2","[Ui] rated insulation voltage":"800 V AC 50/60 Hz conforming to IEC 60947-2","[Ue] rated operational voltage":"690 V AC 50/60 Hz conforming to IEC 60947-2","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":"36 kA at 380/415 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 40 kA at 220/240 V AC 50/60 Hz conforming to IEC 60947-2 10 kA at 525 V AC 50/60 Hz conforming to IEC 60947-2 25 kA at 500 V AC 50/60 Hz conforming to IEC 60947-2 30 kA at 440 V AC 50/60 Hz conforming to IEC 60947-2","[Uimp] rated impulse withstand voltage":"8 kV conforming to IEC 60947-2"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$434.86 – $619.99","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/b348df9deafc6c0f94ccccbaf1d46e84.pdf","sourceUrl":"https://www.se.com/hk/en/product/C40F4/circuit-breaker-basic-frame-compact-nsx400f-36-ka-at-415-vac-50-60-hz-400-a-without-trip-unit-4-poles/"},"ai":{"faq":[{"question":"Where can I buy C40F4 and what is the lead time?","answer":"C40F4 is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — no stock count or lead-time number is published here."},{"question":"What trip unit does C40F4 need?","answer":"As a basic frame without protection, C40F4 requires a separately ordered trip unit — either a Micrologic electronic trip unit or a thermal-magnetic TM-D. The trip unit plugs into the frame's cradle and sets the overload and short-circuit protection curves."},{"question":"What is the breaking capacity of C40F4 at 415 V?","answer":"36 kA Icu at 380/415 V AC 50/60 Hz per IEC 60947-2. At 240 V AC it breaks 85 kA per UL 508, and at 690 V AC it still holds 10 kA Icu."},{"question":"What compliance documentation does Schneider provide for C40F4?","answer":"The frame is certified to EN/IEC 60947-2 and UL 60947-4-1. It carries IP40 and IK07 protection ratings, pollution degree 3 per IEC 60664-1, and overvoltage category III. The front face is Class II insulated."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/C40F4","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/C40F4 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}}