QB2430-50 - 50 Amp Circuit Breaker

QB2430-50 - 50 Amp Circuit Breaker

The QB2430-50 50 Amp Circuit Breaker is a dependable, form-fit functional replacement designed for use in compatible QB-series electrical panels. Built to meet the demands of residential, commercial, and light-industrial electrical systems, this three-pole breaker delivers consistent protection for three-phase circuits where proper ratings and panel compatibility are critical. With a 10 kA interrupting capacity at 240 VAC, it helps protect connected equipment from overloads and short circuits while maintaining stable system performance. Whether you are servicing an existing panel or replacing a breaker that has reached the end of its service life, the QB2430-50 offers a straightforward solution that installs cleanly and operates as expected.

Key Features and Benefits

• Accurate Electrical Rating: Rated at 50 amps with a 10 kA interrupting capacity at 240 VAC, supporting circuits that require dependable protection without unnecessary tripping.
• Bolt-On Mounting Style: Designed for direct bolt-on installation, providing a secure mechanical and electrical connection that stays in place over time.
• Three-Pole Protection: Covers all three phases in a three-phase system, helping maintain balanced load protection across connected equipment.
• Panel Compatibility: Engineered to match the physical and electrical characteristics of QB-series panels, allowing for proper fit without modifications.

Technical Specifications

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

Material Compliance and Certifications

• The QB2430-50 is manufactured using commercial-grade materials selected for consistent electrical performance and long-term reliability.
• Each unit is produced to meet recognized safety and performance expectations for circuit protection devices and is inspected to confirm it aligns with the intended mechanical and electrical specifications.
• This attention to build quality helps ensure confidence during installation and ongoing operation.

Where It Works Best

• Replacement Applications: Well-suited for replacing existing 50 amp breakers in compatible QB-series panels during maintenance or repair work.
• Three-Phase Systems: Ideal for protecting motors, HVAC equipment, and other three-phase loads that require synchronized phase protection.
• Existing Electrical Panels: A practical option for legacy panel systems where maintaining original panel design and ratings is important.