Schneider LADN31 Electric LADN31 TeSys Deca 3NO+1NC Auxiliary Contact Block

The Schneider Electric LADN31 is a front-mounting auxiliary contact block for the TeSys D and TeSys Deca contactor series, offering a 3 NO + 1 NC instantaneous contact arrangement. Rated up to 690 V AC and 6 A at 120 V AC-15, it adds signalling and interlocking contacts to LC1D, LC1F, CAD, and CR1F devices.

Technical specifications:

• Commercial reference: LADN31
• Manufacturer: Schneider Electric
• EAN:
• Series / range: TeSys D / TeSys Deca
• Product type: Auxiliary contact block
• Contact arrangement: 3 NO + 1 NC, instantaneous
• Mounting location: Front
• Rated operational 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
• Rated insulation voltage [Ui]: 690 V (IEC 60947-5-1)
• Conventional thermal current [Ith]: 10 A at 60°C
• Rated making capacity [Irms]: 140 A AC; 250 A DC (IEC 60947-5-1)
• Mechanical endurance: 30 million cycles
• Minimum switching current: 5 mA
• Connection: Screw terminals, 1-2 cables, 1...4 mm²
• Tightening torque: 1.7 N.m
• Dimensions (W x H x D): 44 x 48 x 42 mm
• Weight: 0.05 kg
• IP protection: IP2x (IEC 60529)
• Operating temperature: -5...60°C
• Certifications: CB Scheme, UL, CSA, CCC, EAC, UKCA

Features and benefits:

• 3 NO + 1 NC instantaneous contacts provide flexible signalling and interlocking in motor control circuits
• Compatible with TeSys D (LC1D, CAD), TeSys F (LC1F, CR1F), and TeSys Deca product families
• Screw terminals accept 1 or 2 cables from 1 to 4 mm² for straightforward panel wiring
• 30 million mechanical operating cycles ensure long-term reliability in high-frequency switching applications
• Protective treatment TH rated for humid and tropical environments per IEC 60068

Applications:

• Motor control centres requiring contactor status feedback or interlocking
• Industrial automation panels with PLC-controlled contactor circuits
• HVAC and building management systems using TeSys D or TeSys Deca contactors
• Machine safety circuits needing instantaneous NC/NO feedback contacts

Compliant with EN/IEC 60947-5-1, EN 50012, UL 60947-5-1, and CSA C22.2 No 60947-5-1. Part of the Schneider Electric TeSys D / TeSys Deca range.

Also known as: Schneider LADN31, Schneider Electric LADN31, TeSys auxiliary contact block 3NO 1NC.