ET5917 - 225Amp Circuit Breaker

ET5917 - 225 Amp Circuit Breaker

If you’re trying to match an existing setup, the ET5917 circuit breaker keeps things simple. It’s a 225-amp, 3-pole molded case breaker built on a J frame, so it drops into compatible systems without forcing changes or workarounds. That’s usually what matters most—getting the right fit so everything keeps running the way it should. This breaker is rated for 480VAC and carries a 14kA interrupting capacity, making it suitable for handling typical fault conditions in commercial and industrial environments. It’s designed to operate at 40°C, which lines up with what you’ll find in most real-world electrical rooms and facilities. Nothing flashy here—just a breaker built to last and do its job reliably in the systems it was made for.

Key Features and Benefits

• 225A rating for common commercial and industrial loads
• 3-pole design for three-phase power systems
• 14kA interrupting capacity at 480VAC
• J frame construction for proper fit in matching equipment
• Molded case design built to last under normal use
• Rated for 40°C operating environments
• Helps maintain continuity in existing electrical systems

Technical Specifications

• Part Number: ET5917
  
• Amperage: 225A
  
• Poles: 3
  
• Voltage: 480VAC
  
• Interrupting Rating: 14kA @ 480VAC
  
• Frame Type: J Frame
  
• Operating Temperature: 40°C
  
• Type: Molded Case Circuit Breaker
  
• Weight: 9.0 lbs
  
• Height: 11.0 inches
  

Material Compliance and Certifications

• This circuit breaker is built to align with standard industry expectations for molded case breakers and is intended for use in systems designed around NEC guidelines. As always, final compliance depends on the specific installation and local code requirements.

Where It Works Best

• You’ll typically find the ET5917 used in commercial buildings, industrial facilities, and older distribution systems where matching the original breaker is key. It’s a solid fit for panelboards, motor control applications, and equipment protection circuits that call for a 225A, 3-pole J frame breaker. If you’re replacing an existing unit, this keeps the process straightforward and avoids unnecessary changes to your setup.