{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LC1K12103K72","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"LC1K12103K72","canonicalUrl":"https://aoctrl.com/schneider/LC1K12103K72","factsUrl":"https://aoctrl.com/api/mcp/products/LC1K12103K72","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric TeSys K contactor, 3P, AC-3 ≤440 V 12 A, 1 NO auxiliary, 100 V AC coil, 4 kW at 480 V.","salesMarkdown":"The Schneider Electric TeSys K LC1K12103K72 is a 3-pole contactor rated for AC-3 switching at 12 A up to 440 V, with a built-in 1 NO auxiliary contact and a 100 V AC coil. It handles motor loads up to 4 kW at 480 V and 5.5 kW at 380–415 V, making it a fit for small pumps, fans, and conveyors in control panels. The 12 A AC-3 rating is the motor-switching current — the real-world number that governs whether this contactor holds in across starting inrush. At 480 V it carries 4 kW, at 380–415 V it carries 5.5 kW. The AC-4 category also covers plugging and inching duty, so it can handle reversing or jogging applications within the same current envelope. Coil technology uses a built-in bidirectional peak-limiting diode suppressor, which means the coil snubber is integrated — no external flyback diode needed across the coil terminals. This simplifies wiring and reduces panel assembly time. Flame retardance is rated V1 per UL 94 and also meets NF F 16-101 and NF F 16-102 Requirement 2, which is relevant for rail or transit applications where fire-smoke-toxicity standards apply. The 45 mm width and 58 mm height fit standard DIN-rail enclosures alongside overload relays and terminal blocks.","metaTitle":"TeSys K LC1K12103K72 Contactor, 3P, 12 A AC-3, 100 V AC Coil","metaDescription":"TeSys K LC1K12103K72 contactor, 3P, AC-3 <= 440 V 12 A, 1 NO aux, 100 V AC coil, 4 kW at 480 V. Active production. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"Depth":"57 mm","Range":"TeSys","Width":"45 mm","Height":"58 mm","Product name":"TeSys K","Motor power kW":"4 kW at 480 V AC 50/60 Hz 4 kW at 500...600 V AC 50/60 Hz 4 kW at 660...690 V AC 50/60 Hz 3 kW at 220...230 V AC 50/60 Hz 5.5 kW at 380...415 V AC 50/60 Hz 5.5 kW at 440 V AC 50/60 Hz","Coil technology":"Built-in bidirectional peak limiting diode suppressor","lifecycle_stage":"current","Flame retardance":"V1 conforming to UL 94 Requirement 2 conforming to NF F 16-101 Requirement 2 conforming to NF F 16-102","Heat dissipation":"1.3 W","Range of product":"TeSys K","Device short name":"LC1K","Poles description":"3P","Compatibility code":"LC1K","Device application":"Control","Utilisation category":"AC-1 AC-4 AC-3","Pole contact composition":"3 NO","Product or component type":"Contactor","[Ie] rated operational current":"20 A (at 12 A at 16 A (at 10 MOhm for signalling circuit","[Icw] rated short-time withstand current":"115 A 50 °C - 1 s for power circuit 105 A 50 °C - 5 s for power circuit 100 A 50 °C - 10 s for power circuit 75 A 50 °C - 30 s for power circuit 55 A 50 °C - 1 min for power circuit 50 A 50 °C - 3 min for power circuit 80 A - 1 s for signalling circuit 90 A - 500 ms for signalling circuit 110 A - 100 ms for signalling circuit 25 A 50 °C - >= 15 min for power circuit"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/41a28e887f7e9ad17d22ad9fe0b871b8.pdf","sourceUrl":"https://www.se.com/in/en/product/LC1K12103K72/tesys-k-contactor-3p-ac3-440-v-12-a-1-no-aux-100-v-ac-coil/","alternativesUrl":"https://aoctrl.com/api/mcp/products/LC1K12103K72/alternatives.json"},"ai":{"faq":[{"question":"What motor power can this contactor switch at common voltages?","answer":"At 480 V AC it switches 4 kW; at 380–415 V it switches 5.5 kW; at 220–230 V it switches 3 kW. Also rated 4 kW at 500–600 V and 4 kW at 660–690 V."},{"question":"Does the coil need an external suppression diode?","answer":"No. The coil has a built-in bidirectional peak-limiting diode suppressor, so no external flyback diode is required across the coil terminals."},{"question":"What flame retardance standards does it meet?","answer":"V1 per UL 94, and also Requirement 2 per NF F 16-101 and NF F 16-102, which are rail/transit fire-safety standards."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/LC1K12103K72","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/LC1K12103K72 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}}