Schneider Electric LA1KN40 Auxiliary Contact Block

Description:

The Telemecanique LA1KN40 Auxiliary Contact Block is used in industrial motor control systems to provide four additional normally open auxiliary contacts for TeSys K contactors and control relays. Commonly installed in motor control centers (MCCs), conveyor systems, pumps, compressors, packaging machinery, and industrial control panels. Maintenance teams, OEMs, and system integrators use this auxiliary contact block for repair, replacement, retrofit, or industrial automation maintenance.

Applications:

The Telemecanique LA1KN40 Auxiliary Contact Block is commonly used in industrial facilities to expand the control capabilities of TeSys K contactors in equipment such as conveyors, pumps, compressors, HVAC systems, material handling equipment, and automated manufacturing machinery where dependable electrical interlocking, status feedback, control circuit expansion, and reliable machine control are essential.

Technical Specifications:

• Manufacturer: Telemecanique (Schneider Electric)
• Model / Part Number: LA1KN40
• Product Type: Auxiliary Contact Block
• Product Series: TeSys K
• Device Short Name: LA1
• Contact Configuration: 4 Normally Open (4 NO)
• Auxiliary Contact Operation: Instantaneous
• Mounting Location: Front mount (clip-on)
• Compatible Devices: TeSys K LC1K, CA2K, and CA3K contactors/control relays
• Rated Operational Voltage (Ue): Up to 690 VAC, 25–400 Hz
• Rated Insulation Voltage (Ui): 690 VAC (IEC), 600 VAC (UL/CSA)
• Conventional Free Air Thermal Current (Ith): 10 A at 50°C
• Rated Making Capacity (Irms): 110 A at ≤690 VAC
• Minimum Switching Voltage: 17 V
• Minimum Switching Current: 5 mA
• Terminal Type: Screw clamp terminals
• Standards: IEC 60947-5-1, UL 60947-5-1, CSA C22.2 No. 60947-5-1, GB/T 14048.5
• Application Environment: Industrial motor control, automation systems, and electrical control panels.

Common Replacements:

• Schneider Electric LA1KN40 Auxiliary Contact Block
• Siemens 3RH2911 Front-Mount Auxiliary Contact Block
• Allen-Bradley 100-S Auxiliary Contact Block