CBB3040H - 40Amp Circuit Breaker

CBB3040H - 40Amp Circuit Breaker

The CBB3040H is a 40 amp, 3-pole bolt-on molded case circuit breaker used in 240VAC three-phase electrical systems. When an overload or short circuit occurs, the breaker trips and disconnects power, helping protect wiring, equipment, and connected loads from damage.

A 40 amp 3-pole breaker is commonly used on circuits serving HVAC equipment, pumps, compressors, refrigeration systems, motor control circuits, and other three-phase equipment. Because all three poles trip together, the breaker protects the entire circuit at the same time. You'll often find this type of breaker in commercial buildings, warehouses, schools, manufacturing facilities, and other locations that rely on three-phase power.

The bolt-on mounting design allows the breaker to be securely installed in compatible panelboards, making it a common option for replacement projects, maintenance work, and new installations. The CBB3040H carries a 10kA interrupting rating at 240VAC and is HACR rated for heating, air-conditioning, and refrigeration applications. Its compact footprint can also be helpful when working in existing equipment where available panel space is limited.

Whether you're replacing an existing breaker or matching specifications for a project, the CBB3040H is a straightforward solution when a 40 amp, 3-pole bolt-on circuit breaker is required.

Key Features and Benefits

• 40 amp rating for branch circuit protection
• Three-pole design for 240VAC three-phase systems
• Bolt-on mounting for installation in compatible panelboards
• 10kA interrupting capacity at 240VAC
• HACR rated for HVAC and refrigeration applications
• Molded case construction for overcurrent and short-circuit protection
• All three poles trip simultaneously for complete circuit protection
• Compact design helps conserve panel space
• Rated for operation in ambient temperatures up to 40°C

Technical Specifications

• Part Number: CBB3040H
  
• Type: CBB
  
• Circuit Breaker Type: Bolt-On Molded Case Circuit Breaker
  
• Amperage: 40 Amps
  
• Poles: 3
  
• Voltage Rating: 240VAC
  
• Interrupting Capacity (A.I.C.): 10kA @ 240VAC
  
• Mounting Style: Bolt-On
  
• HACR Rated: Yes
  
• Maximum Ambient Temperature: 40°C
  
• Dimensions:
  • Width: 3.00 in.
  • Height: 3.41 in.
  • Depth: 2.92 in.
• Approximate Dimensions: 3.00"W x 3.41"H x 2.92"D
  
• Approximate Shipping Weight: 2.50 lbs
  

Material Compliance and Certifications

• HACR (Heating, Air Conditioning, and Refrigeration) Rated
• Molded case circuit breaker construction
• Intended for overcurrent and short-circuit protection applications
• Suitable for installation in compatible bolt-on panelboard systems
• Rated for operation in environments up to 40°C

Where It Works Best

The CBB3040H is commonly used in commercial buildings, warehouses, manufacturing facilities, schools, office complexes, retail locations, and light industrial environments. Typical applications include HVAC systems, rooftop units, refrigeration equipment, compressors, pumps, motor control circuits, machinery, panelboards, and three-phase electrical distribution systems requiring a 40 amp, 3-pole circuit breaker operating on 240VAC power.