QOB220 **Older Style** 20A Circuit Breaker

QOB220 **Older Style** 20A  Circuit Breaker

If you're maintaining an existing electrical system that uses Type QOB bolt-on circuit breakers, the QOB220 Older Style offers the form, fit, and function you need as a replacement. Designed with a 20-amp, 2-pole configuration and rated for 120/240VAC, this breaker helps protect branch circuits from overloads and short circuits while fitting compatible panelboards designed for the older-style QOB design. Its bolt-on mounting provides a secure connection to the panel, making it a dependable choice for commercial, industrial, and institutional electrical systems where compatibility matters. Whether you're replacing a worn breaker during routine maintenance or restoring an existing panel to proper working condition, the QOB220 is built to last and designed to work with compatible equipment without changing the original panel configuration. Before installation, always confirm that the breaker's ratings and physical design match the requirements of your electrical system.

Key Features and Benefits

• 20 Amp Rating: 20 Amp rating for branch circuit protection in compatible electrical systems.
• 2-Pole Design: 2-pole design for 120/240VAC applications.
• Bolt-On Mounting: Bolt-on mounting provides a secure mechanical and electrical connection.
• 10k A.I.C. Rating: 10k A.I.C. rating at 120/240VAC for interrupting fault currents within its listed capacity.
• Thermal-Magnetic Trip Mechanism: The thermal-magnetic trip mechanism responds to both overloads and short circuits.
• Form, Fit, and Functional Replacement: Designed as a form, fit, and functional replacement for compatible older-style Type QOB installations.
• Compact Dimensions: Compact dimensions allow installation in compatible panelboards where space is at a premium.
• Built to Last: Built to last for dependable service in properly maintained electrical systems.

Technical Specifications

• Part Number: QOB220 Older Style
• Type: QOB
• Mounting Style: Bolt-On Circuit Breaker
• Poles: 2
• Amperage: 20A
• Voltage Rating: 120/240VAC
• Interrupting Rating: 10k A.I.C. @ 120/240VAC
• Dimensions:
  • Height: 3.0 in.
  • Width: 1.5 in.
  • Depth: 2.5 in.

Material Compliance and Certifications

• Compatible Equipment: Designed for use in compatible Type QOB electrical distribution equipment.
• Industry Standards: Manufactured to meet applicable industry standards for molded case circuit breakers when installed in accordance with manufacturer specifications.
• Code Compliance: Intended for installation following the National Electrical Code (NEC) and applicable local electrical codes.
• Compatibility Verification: Always verify compatibility with the existing panelboard before installation.

Where It Works Best

• The QOB220 Older Style Bolt-On Circuit Breaker is commonly used in compatible electrical distribution systems found in commercial office buildings, industrial facilities, schools and universities, healthcare facilities, retail buildings, multi-family residential properties, and existing Type QOB panelboards requiring a compatible replacement breaker.
• When maintaining an existing electrical system, finding the correct replacement is about more than matching the amperage. The breaker must also match the panel's mounting style, voltage rating, pole configuration, and breaker type. The QOB220 Older Style is designed to provide that compatibility, helping you maintain the original electrical distribution system while delivering the circuit protection expected from a properly matched Type QOB bolt-on circuit breaker.