Westinghouse LBB3400NW Circuit Breaker

Description:

The Westinghouse LBB3400NW Circuit Breaker is used in industrial and commercial electrical distribution systems to provide overcurrent and short-circuit protection for high-capacity three-phase power circuits and electrical equipment. Commonly installed in switchgear assemblies, panelboards, motor control centers, and industrial electrical panels where dependable bolt-on mounting and molded case protection are required. Maintenance teams, electricians, and facility operators use this breaker for replacement of aging protection devices, electrical system upgrades, and preventative maintenance of power distribution infrastructure.

Applications:

The Westinghouse LBB3400NW circuit breaker is commonly used in manufacturing facilities, commercial buildings, HVAC systems, industrial automation equipment, and power distribution applications where reliable 300 amp three-phase circuit protection and dependable fault interruption are critical for safe and continuous electrical operation.

Technical Specifications:

• Brand: Westinghouse
• Part Number: LBB3400NW
• Product Type: Molded Case Circuit Breaker
• Breaker Series: LBB
• Number of Poles: 3 Pole
• Current Rating: 400 Amp
• Voltage Rating: 600 Volt AC
• Trip Type: Thermal Magnetic
• Mounting Type: Bolt-On
• Phase Type: 3 Phase
• Application: Commercial and industrial electrical protection systems
• Function: Overcurrent and short-circuit protection
• Compatible Equipment: Switchgear and distribution systems
• Installation Type: Bolt-on panel mounting
• Usage Environment: Commercial and industrial electrical systems
• Designed For: Branch circuit and equipment protection applications
• Construction: Molded case circuit breaker

Common Replacements:

• Eaton LBB330W
• Cutler-Hammer LBB330W
• Square D LA36300