{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LC1K12103E7","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"LC1K12103E7","canonicalUrl":"https://aoctrl.com/schneider/LC1K12103E7","factsUrl":"https://aoctrl.com/api/mcp/products/LC1K12103E7","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric TeSys K contactor, LC1K12103E7, 3-pole, AC-3 ≤440 V 12 A, 1 NO auxiliary contact, 48 V AC coil.","salesMarkdown":"Its utilisation categories cover AC-3 (squirrel-cage motors: starting, stopping during running), AC-4 (plugging, inching), and AC-1 (resistive heating, lighting). The 20 A rated operational current applies across these categories, but the AC-3 rating that matters for motor duty is 12 A at ≤440 V — meaning it can handle a 5.5 kW motor on a 380–415 V supply, or 4 kW on 480 V. The coil is 48 V AC, so it pulls in cleanly on a standard 48 V control transformer. With 1 NO auxiliary contact built in, it can self-latch or signal a PLC input without an extra add-on block. Heat dissipation is 1.3 W — negligible in a crowded panel, but worth noting if you're stacking dozens on a DIN rail. The 20 A figure is the general-purpose thermal current (Ith), which applies to resistive loads in AC-1 duty. For motor applications, always size by the AC-3 rating, not the higher Ith number. Short-time withstand current (Icw) is 115 A for 1 second on the power circuit — enough to ride through a start-up inrush or a brief fault without welding the contacts. The signalling circuit (auxiliary contact) handles 110 A for 100 ms. Flame retardance meets V1 per UL 94, plus NF F 16-101 and NF F 16-102 requirements — relevant for rail and transit applications where fire safety is specified. Dimensions are compact: 2.3 in high, 1.8 in wide, 2.2 in deep. That 57 mm depth fits standard shallow enclosures and leaves room for wiring ducts in front of the contactor.","metaTitle":"Schneider TeSys K LC1K12103E7 Contactor, 3P, 12A AC-3, 48V A","metaDescription":"Obsolete Schneider TeSys K LC1K12103E7 contactor. 3 poles, AC-3 12A at ≤440V, 1 NO aux, 48V AC coil. Sourced to order against RFQ. Depth 2.2 in.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"Depth":"2.2 in (57 mm)","Range":"TeSys","Width":"1.8 in (45 mm)","Height":"2.3 in (58 mm)","Product name":"TeSys K","Motor power kW":"4 kW 480 V AC 50/60 Hz 4 kW 500...600 V AC 50/60 Hz 4 kW 660...690 V AC 50/60 Hz 3 kW 220...230 V AC 50/60 Hz 5.5 kW 380...415 V AC 50/60 Hz 5.5 kW 440 V AC 50/60 Hz","lifecycle_stage":"current","Flame retardance":"V1 UL 94 Requirement 2 NF F 16-101 Requirement 2 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-3 AC-4 AC-1","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 122 °F (50 °C) - 1 s for power circuit 105 A 122 °F (50 °C) - 5 s for power circuit 100 A 122 °F (50 °C) - 10 s for power circuit 75 A 122 °F (50 °C) - 30 s for power circuit 55 A 122 °F (50 °C) - 1 min for power circuit 50 A 122 °F (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 122 °F (50 °C) - >= 15 min for power circuit"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/dbd166a391171dd3f499038de270ea1e.pdf","sourceUrl":"https://www.se.com/ie/en/product/LC1K12103E7/tesys-k-contactor-3p-ac3-440-v-12-a-1-no-aux-48-v-ac-coil/","alternativesUrl":"https://aoctrl.com/api/mcp/products/LC1K12103E7/alternatives.json"},"ai":{"faq":[{"question":"What are the key ratings I need to check for fit?","answer":"The critical rating is AC-3 at ≤440 V: 12 A, which corresponds to a 5.5 kW motor at 380–415 V. The coil is 48 V AC. The contactor has 3 poles (all NO) and 1 NO auxiliary contact. Dimensions are 2.3 x 1.8 x 2.2 in."},{"question":"How do I source this obsolete contactor?","answer":"Since it is obsolete, standard distribution does not carry it. We source it through independent surplus channels on a quoted-to-order basis. Submit an RFQ with your quantity and target price, and we will respond with availability."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/LC1K12103E7","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/LC1K12103E7 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}}