EHB3050 - 50Amp Circuit Breaker

EHB3050 - 50 Amp Circuit Breaker

When you’re working with an older electrical panel, the last thing you want is guesswork. The EHB3050 circuit breaker is built specifically for those situations—where matching the original equipment matters. Designed for use in panelboards manufactured prior to 1989, this 50-amp, 3-pole breaker delivers the exact form, fit, and function your system was built around. It uses a thermal-magnetic trip mechanism, which means it reacts appropriately to both sustained overloads and sudden short circuits—helping protect your wiring and connected equipment without unnecessary nuisance tripping. With a 14k A.I.C. rating at 480VAC and a 40°C calibration, it’s suited for a wide range of commercial and industrial environments where older systems are still in service. You’ll also appreciate that load terminals are included, saving time during installation. No modifications. No workarounds. Just a straightforward replacement that keeps your system running the way it was designed to.

Key Features and Benefits

• Exact Fit for Legacy Panels – Designed for pre-1989 panelboards using EHB frame breakers
• 50 Amp, 3-Pole Design – Ideal for protecting three-phase electrical systems
• Thermal-Magnetic Protection – Handles both overload conditions and short circuits effectively
• 14k A.I.C. @ 480VAC – Suitable interrupting capacity for many commercial and industrial setups
• Fixed Trip Unit – Non-interchangeable design ensures consistent performance without adjustment
• Includes Load Terminals – Helps reduce installation time and extra parts sourcing
• 40°C Calibration – Built for standard ambient operating conditions
• Durable Construction – Made to last in demanding, real-world applications

Technical Specifications

• Part Number: EHB3050
  
• Amperage: 50A
  
• Poles: 3
  
• Frame Type: EHB
  
• Interrupting Rating: 14k A.I.C. @ 480VAC
  
• Trip Type: Thermal-Magnetic (Non-Interchangeable)
  
• Temperature Rating: 40°C
  
• Included Components: Load terminals
  
• Shipping Height: 6.0 in
  
• Shipping Weight: 4.13 lbs
  

Material Compliance and Certifications

• Manufactured in accordance with standard industry practices for molded case circuit breakers
• Intended for use in systems aligned with UL-listed equipment (confirm panel compatibility before installation)
• Constructed with materials suitable for electrical distribution applications under rated conditions

Where It Works Best

• The EHB3050 is a practical choice when you’re maintaining or repairing existing electrical systems that rely on older equipment. It’s commonly used in:
• Commercial buildings with original panel installations
• Industrial facilities maintaining legacy infrastructure
• Service and repair jobs requiring exact breaker replacement
• Retrofit projects where panel modifications aren’t desirable
• If you’re trying to keep an older system up and running without redesigning the entire setup, this breaker gives you a clean, compatible solution that does exactly what it’s supposed to do—nothing more, nothing less