Westinghouse Electric Corporation L-56 Electrical Interlock

Description:

The Westinghouse L-56 Universal Electrical Interlock is used in industrial motor control and electrical switching systems to provide mechanical and auxiliary electrical interlocking between contactors for safe sequential operation of machinery and power circuits. Commonly installed in reversing starters, transfer systems, motor control centers, and industrial automation panels where dependable interlock protection and coordinated contactor operation are required. Maintenance teams, electricians, and system integrators use this interlock assembly for replacement of worn control accessories, motor starter repairs, and preventative maintenance of industrial electrical systems.

Applications:

The Westinghouse L-56 electrical interlock is commonly used in conveyor systems, pumps, compressors, HVAC equipment, reversing motor starters, and manufacturing automation applications where reliable contactor interlocking and auxiliary contact switching are critical for continuous equipment operation and operator safety.

Technical Specifications:

• Brand: Westinghouse
• Part Number: L-56
• Product Type: Electrical Interlock
• Interlock Type: Universal
• Auxiliary Contact Configuration: 1NO / 1NC
• Application: Industrial motor control systems
• Function: Mechanical and auxiliary electrical contactor interlocking
• Compatible Equipment: Motor starters and contactors
• Installation Type: Contactor mounted
• Usage Environment: Commercial and industrial electrical systems
• Designed For: Reversing starters and interlocked control circuits
• Construction: Industrial electrical interlock assembly
• Electrical Application: Motor control and automation switching systems

Common Replacements:

• Eaton L56 Interlock
• Cutler-Hammer L56 Interlock
• Allen-Bradley 1494V-IC