Schneider Electric LA1-LB021 Auxiliary Contact Block

Description:

The Telemecanique LA1-LB021 Auxiliary Contact Block is used in industrial motor control systems to provide four normally open and one 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-LB021 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 electrical interlocking, status feedback, control circuit expansion, and reliable machine control are essential.

Technical Specifications:

• Manufacturer: Telemecanique (Schneider Electric)
• Model / Part Number: LA1-LB021 (LA1LB021)
• Product Type: Auxiliary Contact Block
• Contact Configuration: 4 Normally Open (4 NO) + 1 Normally Closed (1 NC)
• Auxiliary Contact Operation: Instantaneous
• Rated Operational Current (Ith): 10 A
• Rated Operational Voltage (Ue): Up to 690 VAC
• Rated Insulation Voltage (Ui): 690 VAC
• Mounting Location: Left side mount
• Terminal Type: Screw clamp terminals
• Compatible Devices: Compatible with selected Telemecanique contactors and motor starters
• Standards: IEC 60947, UL, CSA
• Product Status: Discontinued legacy model
• Application Environment: Industrial motor control, automation systems, and electrical control panels.

Common Replacements:

• Schneider Electric LA1LB021 Auxiliary Contact Block
• Siemens 3RH29 Auxiliary Contact Block
• Allen-Bradley 100-S Auxiliary Contact Block