ET5914 - 150Amp Circuit Breaker

ET5914 - 150 Amp Circuit Breaker

When you’re working with an existing electrical system, the last thing you want is guesswork. The ET5914 molded case circuit breaker is built to match the specifications you already rely on—delivering the right fit, the right ratings, and the kind of dependable protection your setup demands. With a 150-amp capacity and a 3-pole configuration, it’s designed for three-phase applications where consistent operation matters. Rated at 14k A.I.C. at 480VAC, this breaker is equipped to handle fault conditions while helping safeguard your equipment and wiring. Its J-frame design makes installation straightforward in compatible panels and switchgear, so you can focus on getting systems back up and running without unnecessary modifications. Built to last and designed for use in 40°C environments, the ET5914 is a practical, no-nonsense solution for maintaining the integrity of your electrical distribution system.

Key Features and Benefits

• Delivers 150-amp protection: for commercial and industrial circuits
• 3-pole configuration: supports three-phase electrical systems
• 14k A.I.C. rating at 480VAC: helps manage short-circuit interruptions
• J frame design: ensures proper fit in compatible legacy equipment
• Molded case construction: provides steady thermal and magnetic protection
• Rated for operation: in environments up to 40°C
• Built to last: making it a dependable choice for ongoing system support

Technical Specifications

• Part Number: ET5914
  
• Amperes: 150A
  
• Poles: 3
  
• Voltage Rating: 480VAC
  
• A.I.C. Rating: 14kA @ 480VAC
  
• Frame Type: J
  
• Operating Temperature: 40°C
  
• Breaker Type: Molded Case Circuit Breaker
  
• Approximate Weight: 9 lbs
  
• Dimensions (Height): 11.0 inches
  

Material Compliance and Certifications

• Produced in line with established molded case circuit breaker standards:
• Designed to meet applicable UL and ANSI requirements where specified:
• Constructed with durable insulating materials and reliable conductive components: for electrical distribution use

Where It Works Best

• The ET5914 is a solid fit for commercial facilities, industrial plants, and institutional buildings that depend on 480VAC three-phase power. It’s especially useful in panelboards and switchgear where a J-frame breaker with a 150-amp rating is required. If you’re maintaining or servicing an existing system and need a breaker that matches original specifications, this model helps keep everything aligned and functioning as intended.