{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LA1SK10","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"LA1SK10","canonicalUrl":"https://aoctrl.com/schneider/LA1SK10","factsUrl":"https://aoctrl.com/api/mcp/products/LA1SK10","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric TeSys SK LA1SK10 power add-on block, 1 NO power + 1 NO signalling contact, 12 A at 690 V AC, IP2X, obsolete.","salesMarkdown":"## Obsolete — sourcing through independent channels Schneider Electric has marked the LA1SK10 as obsolete. No direct successor is listed by the manufacturer. Sourcing now runs through independent surplus and broker channels — quantities are lot-specific, confirmed at RFQ against your BOM line. The LA1SK10 is a TeSys SK power add-on block carrying one normally-open power pole and one normally-open auxiliary signalling contact. It adds a switched power circuit and a status feedback contact to a contactor or starter assembly without expanding the main power pole count. Rated operational current is 12 A in AC-1 duty at 55 °C for the power circuit, and 10 A for the signalling circuit. The conventional free-air thermal current (Ith) matches these figures — the block is sized for continuous current at the stated ambient. The making capacity is 66 A at 690 V AC — this is the peak inrush the NO power contact can close onto without welding. For a motor load, the AC-3 utilisation category applies; the block is listed for both AC-1 (resistive) and AC-3 (motor) duty. Short-time withstand current (Icw) is 50 A at 55 °C for the power circuit — the block can hold that fault current for the rated duration without damage, coordinating with a 10 A gI fuse on the signalling circuit per VDE 0660. IP2X finger protection per VDE 0106 means the block is touch-safe inside an enclosure but not sealed against moisture — it belongs in a panel, not a washdown zone. Terminals accept flexible wire with ferrule from 0.35 to 6 mm² on the power side, and solid wire up to 4 mm². Tightening torque is 0.8 Nm using a Pozidriv No 1 bit — consistent with standard terminal block practice in a control panel. This covers acceptance in most industrial control panels globally. Altitude rating is 2000 m without derating — above that, dielectric strength and thermal dissipation need a correction factor.","metaTitle":"Schneider LA1SK10 Power Add-on Block, 1 NO, 12 A, Obsolete","metaDescription":"Schneider Electric LA1SK10 TeSys SK power add-on block. 1 NO power + 1 NO signalling contact. Rated 12 A at 690 V AC.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Motor Control Accessories"],"specifications":{"Category":"US10I1222371","Standards":"EN/IEC 60947-4-1 UL 60947-4-1 CSA C22.2 No 60947-4-1","lifecycle_stage":"current","Device short name":"LA1SK","Tightening torque":"7.08 lbf.in (0.8 N.m) connector pozidriv No 1","Operating altitude":"6561.68 ft (2000 m) without derating","Protective treatment":"TC IEC 60068 TC DIN 50015","Utilisation category":"AC-1 AC-3","Nbr. of units in pkg.":"1","Associated fuse rating":"10 A gI for signalling circuit conforming to VDE 0660","Connections - terminals":"connector 1 0.0005...0.009 in² (0.35...6 mm²)flexible with cable end connector 1 0.0008...0.009 in² (0.5...6 mm²)flexible without cable end connector 1 0.002...0.009 in² (1.5...6 mm²)solid connector 2 0.0005...0.002 in² (0.35...1.5 mm²)flexible with cable end connector 2 0.0005...0.004 in² (0.35...2.5 mm²)flexible without cable end connector 2 0.002...0.006 in² (1.5...4 mm²)solid","IP degree of protection":"IP2X VDE 0106","Pole contact composition":"1 NO","Product or Component Type":"Power add-on block","Irms rated making capacity":"66 A at 690 V AC conforming to IEC 60947 66 A at 690 V AC conforming to NF C 63-110","Signalling circuit frequency":"<= 400 Hz","Auxiliary contact composition":"1 NO","[Ui] rated insulation voltage":"690 V IEC 60947 690 V VDE 0110 group C 690 V BS 5424 690 V UL 508 690 V CSA C22.2 No 14","Power Pole Contact Composition":"1P","[Ie] rated operational current":"6 A at 12 A (at <131 °F (55 °C)) AC AC-1 for power circuit","[Ue] rated operational voltage":"Signalling circuit 690 V AC Power circuit 690 V AC 50/60 Hz","Ambient Air Temperature for Storage":"-58...158 °F (-50...70 °C)","Ambient Air Temperature for Operation":"-4...122 °F (-20...50 °C)","[Icw] rated short-time withstand current":"50 A 131 °F (55 °C) for power circuit","[Ith] conventional free air thermal current":"12 A (at 131 °F (55 °C)) for power circuit 10 A (at 131 °F (55 °C)) for signalling circuit"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$7.84","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://www.se.com/be/en/product/LA1SK10/tesys-sk-power-add-on-block-1-no-power-1-no-signalling/","alternativesUrl":"https://aoctrl.com/api/mcp/products/LA1SK10/alternatives.json"},"ai":{"faq":[{"question":"What are the key ratings of the LA1SK10?","answer":"The LA1SK10 is a power add-on block with 1 NO power contact rated 12 A at 690 V AC (AC-1) and 1 NO signalling contact rated 10 A. Making capacity is 66 A at 690 V AC. Short-time withstand current is 50 A. IP2X finger protection. Terminals accept 0.35–6 mm² flexible wire."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/LA1SK10","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/LA1SK10 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}}