{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LA1LB031","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"LA1LB031","canonicalUrl":"https://aoctrl.com/schneider/LA1LB031","factsUrl":"https://aoctrl.com/api/mcp/products/LA1LB031","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric TeSys LA1LB031 auxiliary contact block, 2 NO instantaneous contacts, screw-clamp terminals, 10 A conventional free air thermal current, 690 V rated insulation voltage.","salesMarkdown":"## Auxiliary contact block for TeSys contactors The LA1LB031 is a TeSys auxiliary contact block from Schneider Electric, adding two normally-open instantaneous contacts to a contactor or starter assembly. It mounts directly onto the front of the contactor, expanding the control circuit without additional panel wiring. Rated for 10 A conventional free air thermal current (Ith) and 690 V insulation voltage per IEC 60947-5-1, this block handles typical control-circuit voltages from 24 V DC up to 440 V AC/DC across the making-capacity table. ## Termination and wiring constraints Two screw-clamp terminals accept 1 mm² to 2.5 mm² conductors — the smaller gauge for signal-level wiring, the larger for the full 10 A thermal rating. The clamping mechanism holds stranded or solid wire without ferrules, though ferruled ends simplify insertion in tight panel layouts. The 2 NO configuration is instantaneous, meaning the contacts follow the contactor armature position without delay — no timing or sequencing built into the block. This suits interlocking, status feedback, or control-circuit extension where the auxiliary mirrors the main pole state. Making capacity spans 1500 VA at 48 V AC (AC-15) up to 7500 VA at 380-415 V AC (AC-15), with corresponding DC-13 ratings from 220 W at 440 V DC to 800 W at 24 V DC. These values define the maximum inrush the contacts can close onto — relevant when switching solenoid loads or small contactor coils. Rated operational power in VA and W is also specified at 1 million or 1.5 million cycles depending on the voltage and duty — the 440 V DC-13 rating at 28 W for 1.5 million cycles is the endurance floor; the 24 V DC-13 rating at 120 W for 1 million cycles is the power ceiling.","metaTitle":"Schneider Electric LA1LB031 TeSys Auxiliary Contact Block","metaDescription":"Schneider Electric LA1LB031 TeSys auxiliary contact block, 2 NO instantaneous contacts, 10 A thermal current, 690 V insulation.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Motor Control Accessories"],"specifications":{"Range":"TeSys","title":"LA1LB031","Category":"22384-STARTERS,INTEGRAL,ACCESS","description":"auxiliary contact block TeSys- 2 NO - screw-clamps terminals","Making capacity":"1500 VA 48 V AC AC-15) 220 W 440 V DC DC-13) 260 W 220 V DC DC-13) 3500 VA 110...127 V AC AC-15) 400 W 110 V DC DC-13) 6000 VA 220...240 V AC AC-15) 700 W 48 V DC DC-13) 7000 VA 440 V AC AC-15) 7500 VA 380...415 V AC AC-15) 800 W 24 V DC DC-13)","lifecycle_stage":"current","Device short name":"LA1LB","Auxiliary contacts type":"Instantaneous 2 NO) control knob in any position other than auto","Connections - terminals":"2 screw clamps terminals 0.002 in² (1 mm²) 2 screw clamps terminals 0.004 in² (2.5 mm²)","Switching capacity in VA":"0.6 VA >= 17 V 0.01 A","Product or Component Type":"Auxiliary contact","Rated operational power in W":"120 W 24 V DC-13 1000000 cycles 150 W 48 V DC-13 1500000 cycles 28 W 440 V DC-13 1500000 cycles 33 W 220 V DC-13 1500000 cycles 38 W 110 V DC-13 1500000 cycles 61 W 440 V DC-13 1000000 cycles 68 W 220 V DC-13 1000000 cycles 70 W 24 V DC-13 1500000 cycles 75 W 110 V DC-13 1000000 cycles 90 W 48 V DC-13 1000000 cycles","Rated operational power in VA":"160 VA 48 V AC-15 1500000 cycles 280 VA 440 V AC-15 1500000 cycles 300 VA 110...127 V AC-15 1500000 cycles 300 VA 380...415 V AC-15 1500000 cycles 300 VA 48 V AC-15 1000000 cycles 330 VA 220...240 V AC-15 1500000 cycles 500 VA 110...127 V AC-15 1000000 cycles 500 VA 440 V AC-15 1000000 cycles 520 VA 380...415 V AC-15 1000000 cycles 600 VA 220...240 V AC-15 1000000 cycles","[Ui] rated insulation voltage":"690 V IEC 60947-5-1","[Ith] conventional free air thermal current":"10 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$81.84","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://www.se.com/ie/en/product/LA1LB031/auxiliary-contact-block-tesys-2-no-screwclamps-terminals/"},"ai":{"faq":[{"question":"What is the LA1LB031 used for?","answer":"It is an auxiliary contact block that adds two normally-open instantaneous contacts to a TeSys contactor or starter."},{"question":"What wire sizes fit the LA1LB031 terminals?","answer":"The screw-clamp terminals accept 1 mm² to 2.5 mm² conductors. For the full 10 A thermal rating, use 2.5 mm²; for signal-level control wiring, 1 mm² is sufficient."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/LA1LB031","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/LA1LB031 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}