LADN20 is a Schneider Electric add-on auxiliary contact block for TeSys D and TeSys F contactors. Front mounting block, it provides 2NO+2NC instantaneous contacts rated up to 10A 690V AC. With a red front face, it is used for safety chain indication. LADN20 is a Schneider Electric add-on auxiliary contact block for TeSys D and TeSys F contactors. It provides 2NO+2NC instantaneous contacts rated up to 10A 690V AC and is used as safety chain indication thanks to its red front face and NC certified mirror contacts. Easy to mount on front by clip-on, it procures high reliability and durability. Available worldwide, it is multi-standards certified (IEC, UL, CSA, CCC, EAC, Marine) and Green Premium compliant (RoHs/Reach). Add-on block with 2NO+2NC mechanically linked auxiliary contacts, with instantaneous operation. Used in safety chain indication thanks to its red front face and NC certified mirror contacts. High electrical durability , several millions of operating cycles in AC-14/AC-15/DC-13 according conditions. Mounting by clip-on on front of all TeSys D and TeSys F contactors.