{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"ENW21428","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"ENW21428","canonicalUrl":"https://aoctrl.com/schneider/ENW21428","factsUrl":"https://aoctrl.com/api/mcp/products/ENW21428","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric EasyPact NW, control unit, Trip System 6.0A, LSIG, 800-4000 A, 690 V AC, 50/60 Hz, 4P/3P, fixed mounting.","salesMarkdown":"The Schneider Electric ENW21428 is a microprocessor-based control unit for the EasyPact NW range of air circuit breakers. It carries a Trip System 6.0A with LSIG protection — long-time, short-time, instantaneous, and ground-fault — covering the full 800 to 4000 A trip rating range at 690 V AC, 50/60 Hz, per IEC 60947-2. ## What the LSIG protection curve means for your feeder LSIG gives you four independently adjustable protection elements: long-time pickup (Ir) from 0.4 to 1 x In with nine settings and delay adjustable 0.5 to 24 s at 6 x Ir; short-time pickup (Isd) from 1.5 to 10 x Ir with nine settings and delay 100 to 400 ms; instantaneous pickup (Ii) from 2 to 15 x In, also nine settings, with an Off position for coordination schemes; and ground-fault pickup (Ig) adjustable from 0.2 to 1 x In for frames up to 1000 A, or 500 to 1200 A for larger frames, with five delay settings. ## Integration into the EasyPact NW frame This control unit mounts fixed into the EasyPact NW breaker chassis — no DIN rail, no panel cutout. The 75 mm depth, 55 mm width, and 200 mm height fit the standard NW drawout cradle. Neutral position is left-side; the unit supports 3-pole (3D), 4-pole (4D), and 3D + N/2 configurations, with neutral protection selectable as unprotected, 0.5 x Ir, or 1 x Ir. Zone selective interlocking (ZSI) is built in, so you can daisy-chain multiple breakers for faster fault isolation on a bus tie scheme. ## Thermal memory and fault diagnostics The Trip System 6.0A retains a thermal model of the conductor temperature for 20 minutes before and after a trip event. That prevents immediate reclose onto a still-hot cable — useful on motor feeders where repeated starts can overheat the branch circuit. The digital display shows the cause of the last trip: internal fault, short-circuit, overload, or earth fault, which cuts troubleshooting time on a downed line.","metaTitle":"Schneider Electric ENW21428 EasyPact NW Control Unit, LSIG,","metaDescription":"Schneider Electric ENW21428 EasyPact NW microprocessor-based control unit. LSIG protection, 800-4000 A trip rating, 690 V AC. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Air Circuit Breakers"],"specifications":{"Depth":"75 mm","Width":"55 mm","Height":"200 mm","Display type":"Digital display","Network type":"AC","Mounting mode":"Fixed","Thermal memory":"20 minutes before and after tripping","Trip unit name":"Trip System 6.0A","Protection type":"Instantaneous short-circuit protection Short time short-circuit protection Overload protection (long time) Earth fault","lifecycle_stage":"current","Fault indication":"Internal fault Short-circuit Overload Earth fault","Neutral position":"Left","Range of product":"EasyPact NW","Trip unit rating":"800...4000 A","Network frequency":"50/60 Hz","Poles description":"4P 3P","Type of measurement":"Energy meter","Trip unit technology":"Micro-processor based","Product or component type":"Control unit","Neutral protection setting":"Without protection (3D) 0.5 x Ir (3D + N/2) 1 x Ir (4D)","Circuit breaker application":"Industrial Standard","Protected poles description":"3D 4D 3D + N/2","Trip unit protection functions":"LSIG","[Ue] rated operational voltage":"690 V AC 50/60 Hz conforming to IEC 60947-2","Long time delay adjustment type":"Adjustable 9 settings","Zone selective interlocking ZSI":"With","Short-time delay adjustment type":"Adjustable 5 settings","Long time pick-up adjustment range":"0.4...1 x In","Ambient air temperature for storage":"-25...85 °C","Ground-fault pick-up adjustment type":"Adjustable 9 settings","Long time pick-up adjustment type Ir":"Adjustable 9 settings","Ambient air temperature for operation":"-5...70 °C","[Tr] Long-Time Delay Adjustment Range":"0.5...24 s (6 x Ir), accuracy: 0...- 20 %","Instantaneous pick-up adjustment range":"2...15 x In, accuracy: +/- 10 % Off","Short-time pick-up adjustment type Isd":"Adjustable 9 settings","[Tsd] Short-Time Delay Adjustment Range":"100...400 ms","Instantaneous pick-up adjustment type Ii":"Adjustable 9 settings","[Isd] short-time pick-up adjustment range":"1.5...10 x Ir","[Ig] ground-fault pick-up adjustment range":"0.2...1 x In (400 A < In =< 1000 A), accuracy: +/- 10 % 500...1200 x In (In >= 1250 A), accuracy: +/- 10 %","Ground-fault time delay adjustment type -tg":"Adjustable 5 settings","[Tg] Ground-Fault Time Delay Adjustment Range":"100...400 ms"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/fa3eac96f903ddb5df62b64c85125c1b.pdf","sourceUrl":"https://www.se.com/eg/en/product/ENW21428/trip-unit-easypact-nw-tsa6g-fixed/","alternativesUrl":"https://aoctrl.com/api/mcp/products/ENW21428/alternatives.json"},"ai":{"faq":[{"question":"How do I get current pricing and availability for ENW21428?","answer":"The ENW21428 is sourced to order against an RFQ through independent distribution channels. Availability and current pricing are confirmed at quote time."},{"question":"What protection functions does the Trip System 6.0A provide?","answer":"The Trip System 6.0A provides LSIG protection: long-time (L), short-time (S), instantaneous (I), and ground-fault (G) — each with independently adjustable pickup and delay settings."},{"question":"What is the rated operational voltage of ENW21428?","answer":"The ENW21428 is rated 690 V AC at 50/60 Hz, conforming to IEC 60947-2."},{"question":"What is ENW21428's listed depth (75 mm) on this component line?","answer":"The ENW21428 has a depth of 75 mm, width of 55 mm, and height of 200 mm, fitting the standard EasyPact NW drawout cradle."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/ENW21428","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/ENW21428 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}}