CHB340 - 40Amp Circuit Breaker

CHB340 - 40 Amp Circuit Breaker

The CHB340 bolt-on circuit breaker is designed to provide dependable circuit protection for electrical distribution systems that require a 3-pole, 40-amp breaker with a 10kA interrupting rating at 240VAC. Built for use in compatible CHB-frame panelboards and load centers, this breaker helps protect conductors and connected equipment from overloads and short circuits while maintaining the form and fit required for existing installations. Its bolt-on mounting style allows the breaker to fasten securely to the panel bus, helping maintain a stable electrical connection in applications where consistent contact and proper alignment are important. With a compact profile and durable construction, the CHB340 is built to last and is commonly used by electricians and maintenance professionals who need a compatible replacement breaker that meets the original electrical specifications of the system.

Key Features and Benefits

• 3-Pole Configuration – Designed for three-phase electrical systems requiring coordinated protection across multiple conductors.
• 40 Amp Rating – Supports circuits that require a 40A protection level while maintaining proper electrical safety standards.
• 10kA Interrupting Capacity at 240VAC – Rated to interrupt fault currents up to 10,000 amperes under specified voltage conditions.
• Bolt-On Mounting Design – Secures directly to the panelboard bus with bolts, helping maintain a firm and consistent connection.
• CHB Frame Compatibility – Engineered to match the form and fit requirements of panels designed for CHB-frame circuit breakers.
• Built to Last – Constructed with durable internal components intended for long-term use in properly maintained electrical systems.

Technical Specifications

• Part Number: CHB340
  
• Poles: 3
  
• Amperage Rating: 40 Amps
  
• Interrupting Rating (A.I.C.): 10kA @ 240VAC
  
• Frame Type: CHB
  
• Mounting Style: Bolt-On
  
• Height: 3.0 in.
  
• Ship Weight: 2.25 lbs
  

Material Compliance and Certifications

• The CHB340 circuit breaker is manufactured to meet commonly accepted electrical industry standards for molded-case circuit protection devices. Components and materials are designed for safe operation within rated electrical systems and are intended for installation according to applicable electrical codes and manufacturer guidelines.

Where It Works Best

• Commercial and light industrial panelboards using CHB-frame bolt-on breakers
• Facilities maintaining or servicing existing electrical distribution systems
• Three-phase branch circuit protection in building electrical panels
• Maintenance and replacement needs where matching ratings and mounting style are required