QOB330 - 30 Amp Circuit Breaker

QOB330 - 30 Amp Circuit Breaker

The Square D QOB330 is a 30 amp, 3-pole bolt-on circuit breaker designed to provide dependable overcurrent and short-circuit protection for commercial, industrial, and residential electrical distribution systems. As part of the trusted QOB series, this breaker features a secure bolt-on mounting design that helps create a stable electrical connection, making it an excellent choice for panelboards where reliability and long-term performance are essential. Rated for 10kA interrupting capacity at 240VAC, the QOB330 is well-suited for protecting three-phase branch circuits, helping safeguard equipment while supporting safe and efficient power distribution. Whether you're replacing an existing breaker or completing a new installation, this breaker delivers the consistent performance electricians and facility professionals expect from the QOB product line.

Key Features and Benefits

• 30 Amp Current Rating: 30 Amp Current Rating for protecting branch circuits requiring 30A overcurrent protection.
• 3-Pole Configuration: 3-Pole Configuration designed for three-phase electrical systems.
• Bolt-On Design: Bolt-On Design provides a secure installation and dependable electrical connection within compatible panelboards.
• 10kA Interrupting Capacity: 10kA Interrupting Capacity at 240VAC helps protect electrical equipment during fault conditions.
• QOB Series Compatibility: QOB Series Compatibility for use with compatible Square D panelboards designed for QOB bolt-on circuit breakers.
• Dependable Circuit Protection: Engineered for dependable circuit protection in commercial, industrial, and select residential applications.
• Compact Design: Compact design allows for efficient use of available panel space.
  

Technical Specifications

• Part Number: QOB330
  
• Manufacturer Series: QOB
  
• Type: Bolt-On Circuit Breaker
  
• Amperage: 30 Amps
  
• Poles: 3
  
• Voltage: 240 VAC
  
• A.I.C. Rating: 10kA @ 240VAC
  
• Dimensions:
  • Height: 3.0 in.
  • Width: 2.25 in.
  • Depth: 2.5 in.

Material Compliance and Certifications

• Industry Standards: Manufactured to meet applicable industry standards for molded case circuit breakers.
• Installation Requirements: Designed for use in compatible electrical distribution equipment in accordance with applicable electrical codes. Installation should be performed in accordance with local, state, and national electrical regulations by qualified personnel.
  

Where It Works Best

• The QOB330 is ideal for commercial buildings, industrial facilities, offices, retail spaces, apartment complexes, and residential applications that utilize compatible QOB bolt-on panelboards. It is commonly used to protect three-phase motors, HVAC equipment, lighting circuits, machinery, distribution panels, and other branch circuits requiring a 30 amp, 3-pole circuit breaker. Its bolt-on construction makes it especially well-suited for installations where a secure, permanent connection is preferred for dependable long-term operation.