{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"ENW24148","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"ENW24148","canonicalUrl":"https://aoctrl.com/schneider/ENW24148","factsUrl":"https://aoctrl.com/api/mcp/products/ENW24148","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric EasyPact NW, air circuit breaker, ENW24148, 4000 A, 3P, 66 kA Icu at 440 V AC, IEC 60947-2, Category B, fixed mounting, IP40.","salesMarkdown":"For a distribution main or a large motor control center feeder, that 4000 A frame sets the maximum load you can hang downstream. The 25 ms maximum breaking time and 70 ms maximum closing response time are the mechanical limits for fault interruption and reclosure cycles. The pollution degree 4 rating per IEC 60664-1 means this breaker is built for harsh environments — conductive dust, condensation, heavy contamination. That's a step above the typical industrial pollution degree 3, and it drives the creepage distances and clearances inside the breaker. For a switchyard, a steel mill, or a cement plant, that degree 4 rating is what keeps the insulation from tracking over time. ## Deployment context Mounts fixed to a base plate — no DIN rail, no draw-out cradle. The rear connection position with a 115 mm pitch (without spreader) means the bus bars or cables land directly on the back of the breaker. At 422 mm wide, 352 mm high, and 297 mm deep, this is a panel-mounted frame that needs its own compartment in the switchboard. The push-button control type is manual — no motor operator or remote closing coil in this variant. For a distribution main that sees infrequent switching, that's fine. If the line needs remote reclosing or SCADA control, you'd spec the motor-operated version. The contact position indicator gives a visual open/closed status on the front of the breaker. The electrical durability is rated at 5000 cycles at 440 V AC without maintenance under Category B, and 2500 cycles at 690 V AC. Mechanical durability is 20000 cycles with maintenance, 10000 without. For a main breaker that may only operate a few times a year, those numbers are generous. For a switching duty application where the breaker cycles daily, the electrical endurance at the operating voltage is the limiting factor — plan maintenance intervals around it. Designed and tested to IEC 60947-2 for low-voltage switchgear and controlgear. The suitability for isolation marking (per IEC 60947-2) means this breaker can be used as a disconnecting means — no separate disconnect switch needed upstream. Storage range is -40 to 85 °C without the control unit, or -25 to 85 °C with it.","metaTitle":"Schneider Electric ENW24148 EasyPact NW Circuit Breaker, 400","metaDescription":"Schneider Electric ENW24148 EasyPact NW air circuit breaker, 4000 A rated current, 66 kA Icu at 440 V AC. IEC 60947-2, Category B, IP40. Current lifecycle stage. Available to order","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Air Circuit Breakers"],"specifications":{"Depth":"297 mm","Range":"EasyPact","Width":"422 mm","Height":"352 mm","Standards":"IEC 60947-2","Control type":"Push-button","Network type":"AC","Mounting mode":"Fixed","lifecycle_stage":"current","Connection pitch":"115 mm without spreader","Mounting support":"Base plate","Pollution degree":"4 conforming to IEC 60664-1","Range of product":"EasyPact NW","Breaking capacity":"66 kA Icu at 220...440 V AC 50/60 Hz conforming to IEC 60947-2 50 kA Icu at 690 V AC 50/60 Hz conforming to IEC 60947-2","Device short name":"ENW40H","Network frequency":"50/60 Hz","Poles description":"3P","Device application":"Distribution","[In] rated current":"4000 A at 40 °C","Connection position":"Horizontal Vertical","Utilisation category":"Category B","Electrical durability":"Category B: 5000 cycles 440 V AC 50/60 Hz without maintenance conforming to IEC 60947-2 Category B: 2500 cycles 690 V AC 50/60 Hz without maintenance conforming to IEC 60947-2","Maximum breaking time":"25 ms","Mechanical durability":"20000 cycles (with maintenance) conforming to IEC 60947-2 10000 cycles (without maintenance) conforming to IEC 60947-2","Breaking capacity code":"H","Location of connection":"Rear","IP degree of protection":"IP40","Circuit breaker CT rating":"4000 A","Product or component type":"Circuit breaker","Suitability for isolation":"Yes conforming to IEC 60947-2","Contact position indicator":"Yes","Protected poles description":"3P 3d","Maximum closing response time":"70 ms","[Ui] rated insulation voltage":"1000 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","Ambient air temperature for storage":"-40...85 °C without control unit -25...85 °C with control unit","Ambient air temperature for operation":"-5...60 °C","[Ics] rated service breaking capacity":"65 kA (Ics) at 220...440 V AC 50/60 Hz conforming to IEC 60947-2 50 kA (Ics) at 690 V AC 50/60 Hz conforming to IEC 60947-2","[Uimp] rated impulse withstand voltage":"12 kV conforming to IEC 60947-2","[Icw] rated short-time withstand current":"65 kA (1 s) at 220...440 V AC 50/60 Hz conforming to IEC 60947-2 50 kA (1 s) at 690 V AC 50/60 Hz conforming to IEC 60947-2 36 kA (3 s) at 440/690 V AC 50/60 Hz conforming to IEC 60947-2","[Icm] rated short-circuit making capacity":"143 kA (Icm) at 220...440 V AC 50/60 Hz conforming to IEC 60947-2 105 kA (Icm) at 690 V AC 50/60 Hz conforming to IEC 60947-2"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/010a1ca3b05186e111fd550706433d16.pdf","sourceUrl":"https://www.se.com/in/en/product/ENW24148/circuit-breaker-frame-adapt-easypact-nw-3-poles-4000a-h-fixed/","alternativesUrl":"https://aoctrl.com/api/mcp/products/ENW24148/alternatives.json"},"ai":{"faq":[{"question":"What is ENW24148's breaking capacity at 440 V?","answer":"The ultimate breaking capacity Icu is 66 kA at 220...440 V AC 50/60 Hz per IEC 60947-2. The service breaking capacity Ics is 65 kA at the same voltage."},{"question":"What is the rated current of ENW24148?","answer":"The rated continuous current In is 4000 A at 40 °C ambient temperature."},{"question":"What compliance standards does ENW24148 meet?","answer":"The breaker is designed and tested to IEC 60947-2, with a pollution degree 4 rating per IEC 60664-1. It is suitable for isolation per IEC 60947-2."},{"question":"Where can I buy ENW24148?","answer":"The ENW24148 is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/ENW24148","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/ENW24148 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}}