{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LADN403G","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"LADN403G","canonicalUrl":"https://aoctrl.com/schneider/LADN403G","factsUrl":"https://aoctrl.com/api/mcp/products/LADN403G","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric TeSys Deca auxiliary contact block, LADN403G, 4NO, front mounting, spring terminals, EN 50012.","salesMarkdown":"The LADN403G is a front-mounted auxiliary contact block in the TeSys Deca range, providing 4 normally-open instantaneous contacts via spring-cage terminals. It is designed to snap onto the front of a TeSys Deca contactor or reversing starter, adding status feedback or interlocking logic without additional wiring space on the DIN rail. Rated operational current is 6 A at 120 V AC-15 (pilot-duty inductive loads) and 0.55 A at 125 V DC-13 (solenoid/brake loads). The 4NO contact configuration gives four independent normally-open auxiliary circuits — enough to cover a contactor's feedback to a PLC, a status lamp, and a seal-in circuit without paralleling contacts. The spring terminals accept two 2.5 mm² flexible or rigid conductors each, so field wiring is tool-less and vibration-resistant. Minimum switching capability is 5 mA at 17 V, meaning the block can reliably switch low-level PLC inputs or electronic loads without contact wetting issues. Rated making capacity is 140 A AC and 250 A DC per IEC 60947-5-1, so the block can handle inrush from multiple contactor coils or small solenoids. Short-time withstand ratings (100 A for 1 s, 140 A for 100 ms) support coordination with upstream 10 A GG fuses. Compliant with EN/IEC 60947-5-1, GB/T 14048.5, EN 50012, UL 60947-5-1, and CSA C22.2 No 60947-5-1. Also meets glow-wire requirements of IEC 60335-1 Clause 30.2 and Annex JJ of IEC 60335-2-40 / UL 60335-2-40 for HVAC equipment. IP20 finger-safe protection per IEC 60529.","metaTitle":"LADN403G TeSys Deca Auxiliary Contact Block, 4NO, Spring Ter","metaDescription":"LADN403G auxiliary contact block, TeSys Deca, 4NO, front mount, spring terminals. Obsolete — sourced to order against RFQ. Rated 6 A at 120 V AC-15, 0.55 A at 125 V DC-13.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","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","Contacts operation":"Instantaneous","Operating altitude":"3000 m","Protective treatment":"TH conforming to IEC 60068","Insulation resistance":"> 10 MOhm","Mechanical durability":"30 Mcycles","Connections - terminals":"Spring terminals 2 cable(s) 2.5 mm²flexible without cable end Spring terminals 2 cable(s) 2.5 mm²rigid","IP degree of protection":"IP20 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 60947-5-1 600 V conforming to CSA C22.2 No 60947-5-1","[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":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/1564fe2fb22861467bc2c3d5384e120c.pdf","sourceUrl":"https://www.se.com/vn/en/product/LADN403G/auxiliary-contact-block-tesys-deca-4no-front-mounting-spring-terminals-en-50012/","alternativesUrl":"https://aoctrl.com/api/mcp/products/LADN403G/alternatives.json"},"ai":{"faq":[{"question":"What are the key electrical ratings of LADN403G?","answer":"Rated operational current is 6 A at 120 V AC-15 and 0.55 A at 125 V DC-13. Conventional free-air thermal current is 10 A at 60 °C. Insulation voltage is 690 V AC. Minimum switching is 5 mA at 17 V."},{"question":"What standards does LADN403G 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 the glow-wire requirements of IEC 60335-1 Clause 30.2 and IEC/UL 60335-2-40 Annex JJ."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/LADN403G","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/LADN403G 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}}