Westinghouse LB3400NXZ Circuit Breaker

Description:

The Westinghouse LB3400NXZ Circuit Breaker is a non-automatic molded case switch designed for high-capacity manual switching and circuit isolation in industrial and commercial electrical distribution systems. Commonly installed in switchgear assemblies, motor control centers, industrial machinery, and commercial electrical panels where dependable three-phase power isolation and non-automatic switching functionality are required. Maintenance teams, electricians, and facility operators use this molded case switch for equipment disconnect applications, power isolation, and replacement of aging switching hardware.

Applications:

The Westinghouse LB3400NXZ circuit breaker is commonly used in manufacturing facilities, industrial automation systems, HVAC equipment, large motor applications, and power distribution systems where reliable 400 amp three-phase switching and dependable circuit isolation are critical for safe and continuous electrical operation.

Technical Specifications:

• Brand: Westinghouse
• Part Number: LB3400NXZ
• Product Type: Non-Automatic Molded Case Switch
• Breaker Series: LB
• Number of Poles: 3 Pole
• Current Rating: 400 Amp
• Voltage Rating: 600 Volt AC
• Phase Type: 3 Phase
• Protection Type: Non-Automatic
• Mounting Type: Fixed Mount
• Function: Manual power switching and circuit isolation
• Application: Commercial and industrial electrical distribution systems
• Compatible Equipment: Switchgear and distribution systems
• Installation Type: Panel mounted
• Usage Environment: Commercial and industrial electrical systems
• Designed For: High-capacity power distribution and disconnect applications
• Construction: Molded case switch assembly

Common Replacements:

• Eaton LB3400NXZ
• Cutler-Hammer LB3400NXZ
• Square D LA36400NS