Schneider LADN20 Electric LADN20 TeSys Auxiliary Contact Block 2NO

The Schneider Electric LADN20 is a TeSys front-mount auxiliary contact block with 2 normally open (NO) instantaneous contacts, designed to extend the functionality of TeSys D and TeSys F contactors. It offers a rated operating voltage of 690 V AC and a conventional free air thermal current of 10 A at 60°C, making it suitable for signalling and interlocking circuits in motor control applications.

Technical specifications:

• Commercial reference: LADN20
• Manufacturer: Schneider Electric
• EAN:
• Series / range: TeSys D / TeSys Deca
• Product type: Auxiliary contact block
• Contact arrangement: 2 NO (normally open), instantaneous operation
• Mounting location: Front
• Compatible with: TeSys D LC1D, TeSys D CAD, TeSys F LC1F, TeSys F CR1F, TeSys Deca LC1D, TeSys Deca CAD
• Rated operating voltage [Ue]: 690 V AC, 25...400 Hz
• Rated current [Ie]: 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
• Rated insulation voltage [Ui]: 690 V per IEC 60947-5-1; 600 V per UL / CSA
• Conventional free air thermal current [Ith]: 10 A at 60°C
• Rated making capacity (Irms): 140 A AC / 250 A DC per IEC 60947-5-1
• Mechanical durability: 30 million cycles
• Minimum switching current: 5 mA
• Minimum switching voltage: 17 V
• Insulation resistance: >10 MΩ
• Protection type: GG fuse 10 A
• Connection: Screw terminals, 1...4 mm² flexible and rigid; tightening torque 1.7 N.m
• Dimensions (H x W x D): 48 x 26 x 42 mm
• IP protection rating: IP20 per IEC 60529
• Operating temperature: -5...60°C
• Storage temperature: -60...80°C
• Operating altitude: up to 3000 m
• Color: Dark grey
• Weight: 34 g
• Certifications: CB Scheme, UL, CSA, CCC, EAC, UKCA

Features and benefits:

• Front-mount design clips directly onto TeSys D and TeSys F contactors for straightforward installation
• 30 million mechanical operating cycles ensure long service life in high-frequency switching applications
• Operating range from 17 V to 690 V AC suits a wide variety of control circuit requirements
• Screw terminals accept 1...4 mm² flexible and rigid cables for versatile panel wiring
• Globally certified (UL, CSA, CCC, EAC, UKCA) for use in international installations
• Protective treatment TH rating ensures reliable performance in humid and demanding environments

Applications:

• Signalling and interlocking in motor control centres and industrial automation panels
• Contactor status feedback in building automation and HVAC control systems
• Auxiliary control logic expansion in industrial switchboards and distribution panels
• Safety interlock circuits requiring contactor position confirmation

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. Part of the Schneider Electric TeSys D range.

Also known as: Schneider LADN20, Schneider Electric LADN20, TeSys 2NO auxiliary contact block.