{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LADN40G","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"LADN40G","canonicalUrl":"https://aoctrl.com/schneider/LADN40G","factsUrl":"https://aoctrl.com/api/mcp/products/LADN40G","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric TeSys Deca auxiliary contact block, LADN40G, 4NO, front mounting, screw clamp terminals, 10 A thermal current, 690 V insulation, obsolete.","salesMarkdown":"The LADN40G is a TeSys Deca auxiliary contact block from Schneider Electric, configured with 4 normally open (4NO) instantaneous contacts. It mounts on the front of a contactor or starter and provides additional control-circuit switching for signaling, interlocking, or PLC inputs. Rated at 10 A conventional free air thermal current (Ith) at 60 °C, it handles 6 A at 120 V AC-15 (solenoid/contactor loads) and 0.55 A at 125 V DC-13. The insulation voltage (Ui) is 690 V, compliant with IEC 60947-5-1 and UL 60947-5-1. The 10 A thermal current rating (Ith) at 60 °C is the continuous carry capacity in free air — it governs the maximum load on the block itself, not the switched load. The AC-15 and DC-13 ratings are the ones that matter for actual switching: 6 A at 120 V AC covers most pilot-duty solenoids and contactor coils; 0.55 A at 125 V DC covers small DC relays and indicators. Minimum switching capability is 5 mA at 17 V, so the block can reliably switch low-energy PLC inputs or dry-contact signals without needing a separate interface relay. The making capacity — 140 A AC and 250 A DC — tells you the block can handle the inrush of a large contactor coil without welding its own contacts. The short-time ratings (100 A for 1 s, 120 A for 500 ms, 140 A for 100 ms) cover fault-level current before the upstream fuse clears. Screw clamp terminals accept 1 to 4 mm² rigid or flexible wire (single or dual conductors with ferrules). Tightening torque is 1.7 N.m — use a flat Ø 6 mm, Philips No 2, or Pozidriv No 2 screwdriver. The block carries approvals under EN/IEC 60947-5-1, GB/T 14048.5, EN 50012, UL 60947-5-1, and CSA C22.2 No 60947-5-1. It also meets the glow-wire and hot-wire requirements of IEC 60335-1 Clause 30.2 and the specific requirements of IEC 60335-2-40 Annex JJ for HVAC equipment. Protective treatment is TH conforming to IEC 60068 for tropical environments. ## Dimensions and environment Dimensions are 48 mm high, 44 mm wide, and 42 mm deep. Maximum operating altitude is 3000 m.","metaTitle":"Schneider Electric LADN40G TeSys Deca Auxiliary Contact Bloc","metaDescription":"LADN40G is an obsolete TeSys Deca auxiliary contact block with 4 normally open contacts, 10 A thermal current, 690 V insulation. Sourced to order against an RFQ via surplus channel","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Motor Control Accessories"],"specifications":{"Depth":"42 mm","Range":"TeSys TeSys Deca","Width":"44 mm","Colour":"Dark grey","Height":"48 mm","Standards":"EN/IEC 60947-5-1 GB/T 14048.5 EN 50012 UL 60947-5-1 CSA C22.2 No 60947-5-1 IEC 60335-1:Clause 30.2 IEC 60335-2-40:Annex JJ UL 60335-2-40:Annex JJ","Product name":"TeSys Deca","Protection type":"GG fuse 10 A","lifecycle_stage":"current","Non-overlap time":"1.5 ms on de-energisation no overlap between NC and NO contact 1.5 ms on energisation no overlap between NC and NO contact","Device short name":"LADN","Mounting location":"Front","Tightening torque":"1.7 N.m - with screwdriver flat Ø 6 mm 1.7 N.m - with screwdriver Philips No 2 1.7 N.m - with screwdriver pozidriv No 2","Contacts operation":"Instantaneous","Operating altitude":"3000 m","Protective treatment":"TH conforming to IEC 60068","Insulation resistance":"> 10 MOhm","Mechanical durability":"30 Mcycles","Connections - terminals":"Screw clamp terminals 1 cable(s) 1...4 mm²flexible with cable end Screw clamp terminals 1 cable(s) 1...4 mm²flexible without cable end Screw clamp terminals 2 cable(s) 1...2.5 mm²flexible with cable end Screw clamp terminals 2 cable(s) 1...4 mm²flexible without cable end Screw clamp terminals 1 cable(s) 1...4 mm²rigid without cable end Screw clamp terminals 2 cable(s) 1...4 mm²rigid without cable end","IP degree of protection":"IP2X conforming to IEC 60529","Pole contact composition":"4 NO","Minimum switching current":"5 mA","Minimum switching voltage":"17 V","Product or component type":"Auxiliary contact block","Irms rated making capacity":"140 A AC conforming to IEC 60947-5-1 250 A DC conforming to IEC 60947-5-1","Environmental characteristic":"Normal environment","Permissible short-time rating":"100 A 60 °C 1 s 120 A 60 °C 500 ms 140 A 60 °C 100 ms","[Ui] rated insulation voltage":"690 V conforming to IEC 60947-5-1 600 V conforming to UL 600 V conforming to CSA","[Ie] rated operational current":"6 A at 120 V AC-15 1.04 A at 690 V AC-15 0.55 A at 125 V DC-13 0.1 A at 600 V DC-13","[Ue] rated operational voltage":"690 V AC 25...400 Hz","Ambient air temperature for storage":"-60...80 °C","Ambient air temperature for operation":"-5...60 °C","[Ith] conventional free air thermal current":"10 A (at 60 °C)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$26.62","priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/b3c80c4ebb634098f08ed351bb40c7bb.pdf","sourceUrl":"https://www.se.com/ae/en/product/LADN40G/auxiliary-contact-block-tesys-deca-4no-front-mounting-screw-clamp-terminals-en-50012/","alternativesUrl":"https://aoctrl.com/api/mcp/products/LADN40G/alternatives.json"},"ai":{"faq":[{"question":"What are the key ratings for the LADN40G?","answer":"The LADN40G is a 4NO auxiliary contact block rated at 10 A thermal current (Ith) at 60 °C, 6 A at 120 V AC-15, 0.55 A at 125 V DC-13, with a rated insulation voltage of 690 V. Mechanical durability is 30 million cycles."},{"question":"What standards does the LADN40G comply with?","answer":"It complies with EN/IEC 60947-5-1, GB/T 14048.5, EN 50012, UL 60947-5-1, CSA C22.2 No 60947-5-1, and IEC 60335-1 Clause 30.2 and IEC 60335-2-40 Annex JJ."},{"question":"What wire sizes does the LADN40G accept?","answer":"Screw clamp terminals accept 1 to 4 mm² rigid or flexible wire, with or without ferrules, for single or dual conductors."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/LADN40G","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/LADN40G 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}}