CHB290 - 90Amp Circuit Breaker

CHB290 - 90 Amp Circuit Breaker

The CHB290 circuit breaker is a 2-pole, 90 amp bolt-on breaker designed for use in compatible CHB frame panelboards operating at 120/240VAC. Built to deliver dependable overcurrent protection in commercial and industrial electrical distribution systems, this breaker helps safeguard conductors and equipment from damage caused by overloads and short circuits. With a 10kA A.I.C. rating at 120/240VAC, the CHB290 is engineered to meet the interruption demands of properly rated systems while maintaining the form, fit, and function required for seamless replacement in existing installations. Its bolt-on mounting style provides a secure mechanical and electrical connection to the panelboard bus, helping ensure stable performance in applications where vibration or load consistency is a factor. Designed for long-term service, this breaker is built to last and support the continued operation of legacy CHB distribution equipment.

Key Features and Benefits

• 90 Amp Current Rating: Suitable for branch circuits requiring 90A overcurrent protection in commercial or industrial environments.
• 2-Pole Configuration: Provides protection for 120/240VAC circuits, commonly used in single-phase distribution systems.
• 10kA A.I.C. Rating @ 120/240VAC: Rated to interrupt fault currents up to 10,000 amps in properly rated systems.
• Bolt-On Mounting Design: Secures directly to the panelboard bus for consistent electrical contact and added stability.
• CHB Frame Type: Designed specifically for compatibility with CHB series panelboards, ensuring proper fit and function.
• Thermal-Magnetic Trip Mechanism: Protects against both overload and short-circuit conditions.
• Compact Footprint: Approximately 3 inches in height with a ship weight of 1.5 lbs for manageable handling and installation.
  

Technical Specifications

• Part Number: CHB290
  
• Poles: 2
  
• Amperage Rating: 90 Amps
  
• Voltage Rating: 120/240VAC
  
• A.I.C. Rating: 10kA @ 120/240VAC
  
• Frame Type: CHB
  
• Mounting Style: Bolt-On
  
• Approximate Height: 3.0 inches
  
• Ship Weight: 1.5 lbs
  
• Trip Type: Thermal-Magnetic
  

Material Compliance and Certifications

• Industry Standards: The CHB290 circuit breaker is manufactured to meet applicable industry standards for molded case circuit breakers, including compliance with relevant UL listing requirements and NEC guidelines when installed in appropriate equipment.
• Installation Guidance: Always confirm system compatibility and local code requirements prior to installation to ensure proper application and safety.
  

Where It Works Best

• The CHB290 is ideal for use in commercial buildings, industrial facilities, and other properties utilizing CHB series panelboards that require a 2-pole, 90 amp bolt-on breaker. It is well-suited for protecting HVAC systems, subpanels, motor loads, and distribution circuits operating at 120/240VAC. This breaker is intended as a direct replacement in existing CHB assemblies where matching frame type, amperage, voltage, and interrupting rating are required to maintain system integrity and code compliance.