Westinghouse JB3125W U Three Phase Circuit Breaker

Description:

The Westinghouse JB3125W U Circuit Breaker is used in industrial and commercial electrical distribution systems to provide overcurrent and short-circuit protection for three-phase power circuits and electrical equipment. Commonly installed in panelboards, switchgear assemblies, motor control centers, and industrial electrical panels where dependable bolt-on mounting and thermal magnetic 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 JB3125W U circuit breaker is commonly used in manufacturing facilities, commercial buildings, HVAC systems, industrial automation equipment, and motor control applications where reliable 125 amp three-phase circuit protection and dependable fault interruption are critical for safe and continuous electrical operation.

Technical Specifications:

• Brand: Westinghouse
• Part Number: JB3125W U
• Product Type: Circuit Breaker
• Breaker Series: JB
• Number of Poles: 3 Pole
• Current Rating: 125 Amp
• Voltage Rating: 600 Volt AC
• Trip Type: Thermal Magnetic
• Mounting Type: Bolt-On
• Application: Commercial and industrial electrical protection systems
• Function: Overcurrent and short-circuit protection
• Compatible Equipment: Panelboards 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 JB3125W
• Cutler-Hammer JB3125W
• Square D KA36125