Telemecanique LA1-D04 Auxiliary Contact Block

Description:

The Telemecanique LA1-D04 Auxiliary Contact Block is used in industrial motor control systems to provide four additional normally closed auxiliary contacts for 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 LA1-D04 Auxiliary Contact Block is commonly used in industrial facilities to expand the control capabilities of contactors in equipment such as conveyors, pumps, compressors, HVAC systems, material handling equipment, and automated manufacturing machinery where dependable status feedback, electrical interlocking, control circuit expansion, and reliable machine control are essential.

Technical Specifications:

• Manufacturer: Telemecanique (Schneider Electric)
• Model / Part Number: LA1-D04 (LA1D04)
• Product Type: Auxiliary Contact Block
• Product Series: TeSys D
• Contact Configuration: 4 Normally Closed (4 NC)
• Contact Operation: Instantaneous
• Mounting Location: Front mount
• Compatible Devices: TeSys D contactors, TeSys F contactors, and TeSys D control relays
• Rated Operational Voltage (Ue): Up to 690 VAC, 25–400 Hz
• Conventional Free Air Thermal Current (Ith): 10 A at 60°C
• Rated Insulation Voltage (Ui): 690 VAC (IEC), 600 VAC (UL/CSA)
• Rated Making Capacity (Irms): 140 A at ≤690 VAC AC; 250 A at ≤690 VDC
• Minimum Switching Voltage: 17 V
• Minimum Switching Current: 5 mA
• Terminal Type: Screw clamp terminals
• Standards: IEC 60947-5-1, UL, CSA
• Application Environment: Industrial motor control, automation systems, and electrical control panels.

Common Replacements:

• Schneider Electric LADN04 Auxiliary Contact Block
• Siemens 3RH2921 Front-Mount Auxiliary Contact Block
• Allen-Bradley 100-S Auxiliary Contact Block