THLC434250WL - 250Amp Circuit Breaker

THLC434250WL - 250 Amp Circuit Breaker

The THLC434250WL is a 250-amp, 3-pole THLC4 molded case circuit breaker designed to provide dependable overcurrent protection for your commercial and industrial electrical distribution systems. This unfused current-limiting circuit breaker features a non-interchangeable trip unit. It is engineered to help you protect conductors and connected equipment from damage caused by overloads and short circuits. Built for applications requiring high interrupting capacity, the THLC434250WL offers an impressive 150kA interrupting rating at 480VAC and 200kA at 240VAC, making it well-suited for installations where available fault current levels are significant. Designed with both form and function in mind, this circuit breaker includes line-side and load-side lugs for convenient installation and secure conductor termination. Its compact footprint allows it to fit within compatible electrical distribution equipment while delivering the protection required for demanding power systems. Built to last and intended for long-term service in properly maintained electrical environments, the THLC434250WL is commonly used in switchboards, panelboards, motor control systems, and other power distribution applications where reliable circuit protection is essential.

Key Features and Benefits

• 250 Amp current rating: for medium- to high-capacity electrical distribution systems
• 3-pole configuration: for three-phase power applications
• Current limiting design: helps reduce the effects of high fault currents
• Non-interchangeable trip unit: maintains fixed protection settings
• Unfused construction: simplifies circuit protection design
• Includes both line-side and load-side lugs: for installation convenience
• High interrupting capacity rated at:
  • 150kA at 480VAC
  • 200kA at 240VAC
• Designed for compatibility: with equipment utilizing THLC4 circuit breakers
• Built for long-term service: in commercial and industrial environments

Technical Specifications

• Part Number: THLC434250WL
• Type: THLC4
• Current Rating: 250 Amps
• Poles: 3
• Voltage / Interrupting Rating: 150kA @ 480VAC; 200kA @ 240VAC
• Breaker Style: Current Limiting
• Trip Unit: Non-Interchangeable
• Fuse Configuration: Unfused
• Included Accessories: Line-Side and Load-Side Lugs
• Height: 13.06 in.
• Width: 5.72 in.
• Depth: 4.88 in.

Material Compliance and Certifications

• This circuit breaker is manufactured for use in electrical distribution systems and should be installed and maintained in accordance with applicable electrical codes, standards, and manufacturer guidelines. Users should verify specific compliance, certification, and application requirements for their installation before use.

Where It Works Best

• The THLC434250WL is well-suited for:
• Commercial building electrical distribution systems
• Industrial manufacturing facilities
• Power distribution switchboards
• Panelboard applications
• Motor control and feeder circuits
• Facilities requiring high fault-current interrupting capability
• Electrical systems utilizing compatible THLC4 circuit breaker configurations
• Its combination of a 250A rating, current limiting design, and high interrupting capacity makes it a practical choice for protecting three-phase electrical systems where dependable overcurrent protection and equipment compatibility are important considerations.