ET4034 - 40Amp Circuit Breaker

ET4034 - 40 Amp Circuit Breaker

When you’re maintaining or servicing an existing electrical system, the last thing you want is guesswork. The ET4034 molded case circuit breaker keeps things straightforward—delivering the exact ratings, fit, and function you need to keep your system operating safely. With a 40 amp capacity, 3-pole configuration, and a 14kA interrupting rating at 480VAC, this breaker is built for dependable circuit protection in commercial and industrial environments. Its F-frame design makes installation seamless in compatible equipment, helping you get the job done efficiently without unnecessary modifications. Designed for use in standard 40°C conditions, it’s a practical, no-nonsense solution that does exactly what it’s supposed to do—protect your circuits and keep operations moving.

Key Features and Benefits

• 40 amp rating: designed for consistent circuit protection in everyday applications
• 3-pole configuration: supports three-phase power distribution
• 14kA interrupting capacity at 480VAC: helps safely handle fault conditions
• F-frame construction: ensures proper alignment and fit in compatible panels
• Molded case housing: provides solid insulation and durability
• Built for operation in 40°C ambient environments
• Ideal for direct replacement: where matching specs and footprint matter

Technical Specifications

• Part Number: ET4034
• Amperage: 40A
• Poles: 3
• Interrupting Capacity: 14kA @ 480VAC
• Frame Type: F Frame
• Operating Temperature: 40°C
• Breaker Type: Molded Case Circuit Breaker
• Approximate Shipping Weight: 4.5 lbs
• Dimensions (Height): 10.0 inches

Material Compliance and Certifications

• Produced in line with established molded case circuit breaker standards
• Meets commonly accepted electrical safety requirements for North American applications
• Constructed using materials standard to compliant electrical distribution equipment

Where It Works Best

The ET4034 fits right into commercial facilities, industrial operations, and institutional buildings running 480VAC three-phase systems. It’s especially useful in panelboards and switchgear where maintaining the original design and layout is important. Whether you’re handling routine maintenance or replacing a failed unit, this breaker offers a straightforward, compatible solution that keeps your system protected without complicating the process.