Westinghouse / Cutler-Hammer LA3125PT TRI-PAC Trip Unit

Description:

The Westinghouse / Cutler-Hammer LA3125PT TRI-PAC Trip Unit is used in industrial molded case circuit breaker systems to provide thermal magnetic overcurrent and short-circuit protection for three-phase power distribution equipment. Commonly installed in LA series TRI-PAC circuit breakers, switchgear assemblies, motor control centers, and industrial electrical panels where dependable trip protection and fault interruption are required. Maintenance teams, electricians, and facility operators use this trip unit for breaker maintenance, replacement of failed trip assemblies, and electrical system upgrades.

Applications:

The Westinghouse LA3125PT trip unit is commonly used in manufacturing facilities, commercial buildings, HVAC systems, industrial automation equipment, and power distribution applications where reliable 125 amp three-phase breaker trip protection and dependable fault interruption are critical for safe and continuous electrical operation.

Technical Specifications:

• Brand: Westinghouse / Cutler-Hammer
• Part Number: LA3125PT
• Product Type: Circuit Breaker Trip Unit
• Breaker Series: LA TRI-PAC
• Number of Poles: 3 Pole
• Current Rating: 125 Amp
• Trip Type: Thermal Magnetic
• Application: Industrial electrical protection systems
• Function: Overcurrent and short-circuit trip protection
• Compatible Equipment: LA series TRI-PAC molded case circuit breakers
• Installation Type: Breaker mounted
• Usage Environment: Commercial and industrial electrical systems
• Designed For: Branch circuit and equipment protection applications
• Construction: Industrial breaker trip assembly

Common Replacements:

• Eaton LA3125PT
• Cutler-Hammer LA3125PT
• Square D LA36125