QOB2100 - 100 Amp Circuit Breaker

QOB2100 - 100 Amp Circuit Breaker

The QOB2100 is a 2-pole, 100-amp bolt-on circuit breaker for compatible 120/240VAC panelboards. It provides overcurrent and short-circuit protection for branch circuits and is rated to interrupt up to 10kA of available fault current.

Unlike a plug-on breaker, this model bolts directly to the panel bus. That makes it a common choice in many commercial and industrial installations where a secure connection is preferred. If you're replacing an existing Type QOB breaker, matching the part number, electrical ratings, and panel compatibility is the best place to start.

Electricians regularly use breakers like the QOB2100 for larger branch circuits feeding HVAC equipment, motors, lighting panels, and other equipment that requires a 100-amp, 2-pole breaker. Before installation, always confirm that the breaker matches the panelboard and the electrical requirements of the system.

Key Features and Benefits

• Part Number: QOB2100
• 100 Amp Rating: 100 Amp rating.
• Two-Pole Configuration: Two-pole configuration.
• Bolt-On Mounting: Bolt-on mounting.
• Type QOB: Type QOB.
• Rated 10kA at 120/240VAC: Rated 10kA at 120/240VAC.
• Branch Circuit Protection: Helps protect branch circuits from overloads and short circuits.
• Compact Design: Compatible with panelboards.

Technical Specifications

• Part Number: QOB2100
• Type: QOB
• Mounting: Bolt-On
• Poles: 2
• Amperage: 100 Amps
• Voltage: 120/240VAC
• Interrupting Rating: 10kA @ 120/240VAC
• Dimensions:
  • Height: 3.5 in.
  • Width: 1.5 in.
  • Depth: 2.5 in.

Material Compliance and Certifications

• Manufactured for Compatible Equipment: Manufactured for use in compatible electrical distribution equipment.
• Industry Standards: Designed to meet applicable industry standards for molded case circuit breakers.
• Installation Requirements: Always follow local electrical codes and manufacturer installation requirements.

Where It Works Best

• The QOB2100 is commonly found in commercial buildings, schools, offices, retail spaces, and light industrial facilities that use compatible QOB panelboards. Typical applications include HVAC systems, pumps, compressors, lighting distribution, machinery, and other 120/240VAC branch circuits requiring a 100-amp, two-pole breaker.