Telemecanique LA2DT4 Time Delay Auxiliary Contact Block

Description:

The Telemecanique LA2DT4 Time Delay Auxiliary Contact Block is used in industrial motor control systems to provide adjustable on-delay timing for contactors and control circuits. Commonly installed in motor control centers (MCCs), conveyor systems, pumps, compressors, star-delta motor starters, and automated production equipment. Maintenance teams, OEMs, and system integrators use this time delay contact block for repair, replacement, retrofit, or industrial automation maintenance.

Applications:

The Telemecanique LA2DT4 Time Delay Auxiliary Contact Block is commonly used in industrial facilities to introduce adjustable timing sequences for contactor operation in equipment such as conveyors, compressors, pumps, HVAC systems, packaging machines, and automated manufacturing machinery where dependable delayed switching, motor starting, process sequencing, and reliable machine control are essential.

Technical Specifications:

• Manufacturer: Telemecanique (Schneider Electric)
• Model / Part Number: LA2DT4
• Product Type: Time Delay Auxiliary Contact Block
• Product Series: TeSys D / TeSys F
• Timer Function: On-delay
• Time Delay Range: 10–180 seconds
• Contact Configuration: 1 Normally Open (1 NO) + 1 Normally Closed (1 NC)
• Mounting Location: Front mount
• 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
• Rated Making Capacity (Irms): 140 A at ≤690 VAC; 250 A at ≤690 VDC
• Terminal Type: Screw clamp terminals
• Mechanical Durability: 5 million operating cycles
• Minimum Switching Voltage: 17 V
• Minimum Switching Current: 5 mA
• Application Environment: Industrial motor control, star-delta motor starters, automation systems, and electrical control panels.

Common Replacements:

• Schneider Electric LADT4 Time Delay Auxiliary Contact Block
• Siemens 3RH19 Time Delay Auxiliary Contact Block
• Allen-Bradley 700-TBR Time Delay Relay