Westinghouse 1490460 CONTACTOR L-60 Interlock

Description:

The Westinghouse 1490460 L-60 Interlock is an inboard electrical interlock assembly designed for use with Westinghouse contactors and motor starters. This interlock prevents two contactors from being energized simultaneously, ensuring safe operation in reversing starter, transfer control, and motor control applications. The assembly is commonly installed in motor control centers, industrial control panels, and automation systems where mechanical and electrical interlocking is required to prevent conflicting contactor operation. The 1490460 is specifically identified as an L-60 inboard interlock for Size 3 and Size 4 contactors.

Applications:

The Westinghouse 1490460 L-60 Interlock is commonly used in reversing motor starters, conveyor systems, pumps, compressors, hoists, fans, and industrial machinery requiring forward/reverse motor control. It is mounted between paired contactors to prevent simultaneous closure, helping protect motors, starters, and electrical equipment from damage caused by opposing contactor operation. The interlock is suitable for industrial motor control systems utilizing compatible Westinghouse Size 3 and Size 4 contactors.

Technical Specifications:

• Manufacturer: Westinghouse Electric Corporation
• Part Number: 1490460
• Series: L-60
• Product Type: Contactor Interlock Assembly
• Interlock Type: Inboard Electrical Interlock
• Function: Prevents simultaneous operation of paired contactors
• Compatible Contactor Sizes: Size 3 and Size 4
• Application: Reversing starters and motor control systems
• System Compatibility: Westinghouse contactors and motor starters
• Installation Type: Contactor-mounted accessory
• Control Function: Electrical interlocking and safety protection
• Mounting Configuration: Inboard assembly design
• Intended Use: Motor starter and contactor interlocking
• Operating Environment: Industrial and commercial electrical applications
• Service Type: OEM replacement component
• Condition Availability: Commonly available as surplus, replacement, and NOS inventory.

Common Replacements:

• Eaton L-60 Electrical Interlock Assembly
• Cutler-Hammer Size 3–4 Contactor Interlock Kit
• Siemens Reversing Contactor Interlock Assembly