THLC134100WL - 100Amp Circuit Breaker

THLC134100WL - 100Amp Circuit Breaker

When your existing electrical system needs a replacement circuit breaker, the details matter. Matching the amperage is only the beginning. The breaker also needs the correct pole configuration, interrupting capacity, physical dimensions, and electrical connections to work with the equipment already in place. That's where the THLC134125WL 125 Amp 3-Pole Current Limiting Circuit Breaker comes into consideration.

A defining characteristic of this breaker is its current-limiting design. During qualifying short-circuit conditions, a current-limiting circuit breaker interrupts fault current while limiting the current and energy that passes through the circuit. Because the THLC134125WL is an unfused breaker, its current-limiting function does not depend on a separate fuse. You must still evaluate its protective behavior against the manufacturer's published ratings and your application requirements.

Key Features and Benefits

• 125 Amp Current Rating
• Three-Pole Configuration
• Type THLC1 Circuit Breaker
• Unfused Current-Limiting Design
• Non-Interchangeable Trip Unit
• Included Line-Side Lugs
• Included Load-Side Lugs
• Existing Electrical Equipment Compatibility
• Legacy Distribution System Maintenance
• Form, Fit, and Functional Replacement

Technical Specifications

• Part Number: THLC134125WL
  
• Product Category: Circuit Breaker
  
• Product Type: Unfused Current-Limiting Circuit Breaker
  
• Breaker Type: THLC1
  
• Rated Current: 125 Amps
  
• Number of Poles: 3
  
• Current-Limiting Design: Yes
  
• Fused or Unfused: Unfused
  
• Trip Unit Configuration: Non-Interchangeable
  
• A.I.C. Rating at 480VAC: 150kA (150,000 Amps)
  
• A.I.C. Rating at 240VAC: 200kA (200,000 Amps)
  
• Line-Side Lugs: Included
  
• Load-Side Lugs: Included
  
• Height: 8.75 inches
  
• Width: 4.13 inches
  
• Depth: 4.19 inches
  
• Overall Dimensions (H × W × D): 8.75" × 4.13" × 4.19"
  
• Approximate Shipping Weight: 16.00 lbs.
  

Material Compliance and Certifications

Correct electrical compatibility is essential when selecting a replacement circuit breaker, particularly in existing commercial and industrial installations. The THLC134125WL is identified as a Type THLC1, 125-amp, three-pole, unfused current-limiting circuit breaker with a non-interchangeable trip unit.

The construction materials used in the breaker housing, terminals, and internal components have not been independently specified. Likewise, the supplied information does not confirm a particular UL listing, CSA certification, or other product-specific approval. Verify any required certifications through the product markings and manufacturer documentation.

Where It Works Best

• Compatible Type THLC1 Equipment
• Existing 125 Amp Electrical Circuits
• Three-Pole AC Distribution Systems
• Unfused Current-Limiting Breaker Applications
• Commercial Electrical Distribution Equipment
• Industrial Electrical Distribution Equipment
• Legacy Circuit Breaker Replacement
• Facility Electrical Maintenance
• Manufacturing Plant Electrical Systems
• Electrical Equipment Repair Projects
• Existing Distribution Panel Maintenance
• Compatible Switchboard Applications
• High Available Fault Current Applications
• Line-and-Load Lug Connection Applications
• Form, Fit, and Function Replacement