UQFB-100 - 100Amp Circuit Breaker

UQFB-100 - 100Amp Circuit Breaker

The Milbank UQFB-100 Circuit Breaker is built for dependable electrical protection where consistency and safety matter most. Designed as a 100 amp, 2-pole, 240V bolt-on breaker, it delivers steady performance for demanding electrical systems without unnecessary complexity. This breaker uses a proven thermal magnetic trip mechanism that reacts quickly to overloads and short circuits, helping protect connected equipment and wiring before problems escalate. With a 10,000 amp interrupting capacity, the UQFB-100 is well suited for applications that require confidence under fault conditions. Its bolt-on mounting style provides a firm, secure connection, which many electricians prefer for long-term reliability and reduced movement over time. Overall, this breaker is a practical, no-nonsense choice for professionals who want solid protection that simply works.

Key Features and Benefits

• Secure Bolt-On Connection: Helps ensure a tight, stable installation that stays in place over years of service.
• Thermal Magnetic Trip Protection: Responds to both sustained overloads and sudden short circuits for balanced protection.
• 10kA Interrupt Rating: Capable of safely interrupting high fault currents, reducing the risk of system damage.
• 2-Pole Design: Ideal for 240V applications requiring simultaneous disconnect of both poles.
• Easy-to-Use Lever Actuator: Clear on/off operation for quick status checks and maintenance.

Technical Specifications

• Type: Current Interrupting Device
• Voltage Rating: 240 Volts AC
• Amperage Rating: 100 Amps
• Frequency: 60 Hertz
• Phase: Single Phase
• Frame Type: F-Frame
• Trip Type: Thermal Magnetic
• Interrupt Rating: 10,000 Amps
• Number of Poles: 2
• Actuator: Lever
• Connection: Lug to Lug
• Material: Non-Metallic
• Maximum Operating Temperature: 40°C
• Dimensions:
  • Height: 7.438 in
  • Length: 3.281 in
  • Width: 3 in

Material Compliance and Certifications

• UL Listed: The Milbank UQFB-100 is UL Listed, confirming it meets recognized safety and performance standards. This certification provides added assurance that the breaker has been tested for reliability, proper operation, and long-term use in electrical systems.

Where It Works Best

• This circuit breaker is commonly used in residential and light commercial electrical systems, as well as utility-related metering and service equipment that requires a dependable 100 amp, 240V solution. It performs well in environments where consistent power protection is essential and where bolt-on breakers are preferred for their stability and secure fit.