QB2430-50 - 50 Amp Circuit Breaker

QB2430‑50 - 50 Amp Circuit Breaker

The QB2430‑50 is a reliable 50 Amp, three‑pole circuit breaker designed specifically for form‑fit functional replacements in QB‑series electrical panels. With a 10 kA interrupting capacity at 240 VAC, this breaker helps maintain correct circuit protection in residential, commercial, and light‑industrial settings where compatibility and correct ratings matter most. Whether you’re maintaining an older electrical system or replacing a worn component, this breaker fits right into compatible panels and supports safe operation of three‑phase loads.

Key Features and Benefits

• Appropriate Capacity & Safety: Rated at 50 Amps with a 10 kA interrupting capacity at 240 VAC, this breaker is suited for circuits that require this specific specification to handle expected loads without nuisance trips.
• Bolt‑On Installation: Secure bolt‑on design installs directly into panels without adapters, ensuring a stable connection over time and reducing installation variables.
• Three‑Pole Design: Protects all three phases in a three‑phase system, making it suitable for balanced distribution in workshops, machine areas, or multi‑circuit environments.
• Built for Compatibility: Engineered to match the physical and electrical requirements of QB‑series panels, supporting seamless panel integration without modification.

Technical Specifications

• Number of Poles: 3
• Ampere Rating: 50 A
• Interrupting Capacity: 10 kA @ 240 VAC
• Frame Type: QB
• Dimensions:
  • Width: 2.25″
  • Length: 4.81″
  • Depth: 2.50″
• Shipping Weight: ~3.25 lbs

Material Compliance and Certifications

• Manufactured using quality commercial‑grade materials: The QB2430‑50 is built to meet established safety and performance standards for circuit protection devices. Each unit undergoes quality checks to confirm it meets expected specifications, giving installers and technicians confidence that the breaker matches the intended electrical and mechanical characteristics for replacement use.

Where It Works Best

• Routine Replacements: Ideal for swapping in place of existing 50 Amp breakers in compatible panels when maintenance or part replacement is needed.
• Three‑Phase Circuit Protection: Suitable for systems that require balanced protection across three phases, such as motors, HVAC equipment, and distribution panels.
• Legacy Panel Integration: A straightforward form‑fit functional replacement in QB‑series electrical boards without requiring panel modifications.