QCB50 - 50 Amp Circuit Breaker

QCB50 - 50 Amp Circuit Breaker

The QCB50 is a 2-pole, 50-amp bolt-on circuit breaker designed for use in your compatible electrical distribution systems requiring dependable overcurrent protection at 120/240VAC. Built with a bolt-on mounting configuration, this breaker provides a secure mechanical connection to the panelboard, helping you to maintain a stable installation in commercial, industrial, and institutional applications. As a Type QCB circuit breaker, the QCB50 is intended as a form, fit, and functional replacement where this breaker type and rating are specified. Its 10kA interrupting capacity at 120/240VAC makes it suitable for installations within its rated fault current limits. Built to last, the QCB50 is an excellent choice for maintaining and servicing existing electrical systems while matching the original equipment's required electrical specifications.

Key Features and Benefits

• 50 Amp Continuous Current Rating: 50 Amp continuous current rating for branch circuit protection.
• 2-Pole Design: 2-pole design for protecting two energized conductors in 120/240VAC systems.
• Bolt-On Mounting: Bolt-on mounting provides a secure installation in compatible panelboards.
• Type QCB Circuit Breaker: Type QCB circuit breaker for form, fit, and functional replacement applications.
• 10kA A.I.C. Rating: 10kA A.I.C. rating at 120/240VAC for installations within the breaker's interrupting capacity.
• Overload and Short-Circuit Protection: Designed to help protect electrical equipment and conductors from overloads and short circuits.
• Built to Last: Built to last for continued use in properly maintained electrical systems.
  

Technical Specifications

• Part Number: QCB50
  
• Type: QCB
  
• Product Type: Bolt-On Circuit Breaker
  
• Poles: 2
  
• Amperes: 50A
  
• Voltage Rating: 120/240VAC
  
• A.I.C. Rating: 10kA @ 120/240VAC
  
• Mounting Style: Bolt-On
  
• Dimensions:
  • Height: 4.81 in.
  • Width: 1.50 in.
  • Depth: 2.50 in.

Material Compliance and Certifications

• Type QCB Compatibility: Designed for installation in compatible electrical distribution equipment requiring a Type QCB circuit breaker.
• Industry Standards: Manufactured to meet applicable industry standards for the product type and intended application where specified.
• Compatibility Verification: Always confirm compatibility with the existing panelboard and verify that all electrical ratings match the requirements of the installation before use.
• Installation Requirements: Installation should be performed in accordance with applicable electrical codes and by qualified personnel.
  

Where It Works Best

• The QCB50 is well suited for maintaining existing commercial, industrial, and institutional electrical systems that require a 2-pole, 50-amp Type QCB bolt-on circuit breaker. It is commonly used in compatible panelboards protecting branch circuits serving HVAC equipment, lighting systems, distribution circuits, and other electrical loads where a 120/240VAC, 10kA-rated breaker with bolt-on mounting is specified. Its form, fit, and functional compatibility make it an effective replacement option for keeping existing systems operating as intended.