PB3800 - 800 Amp Circuit Breaker

PB3800 - 800 Amp Circuit Breaker

Need a PB3800 circuit breaker for an existing electrical system? This 800-amp, 3-pole thermal-magnetic breaker is a PB-Type unit with a rear-connected configuration. It's intended for equipment where matching the original breaker's electrical ratings, connection style, and physical size is important.

The PB3800 measures 22.13 inches high, 12.06 inches wide, and 9.06 inches deep and is rated for 40°C. Interrupting ratings are 100k AIC at 600VAC, 100k AIC at 480VAC, and 125k AIC at 240VAC. Those details are worth checking carefully when you're replacing a breaker in legacy equipment. A similar-looking breaker isn't necessarily the right fit.

For maintenance departments, electricians, and facilities working to keep existing electrical equipment in service, the PB3800 offers a straightforward option when this specific breaker configuration is required. It's built to last and designed to perform its intended function when properly matched to compatible equipment.

Key Features and Benefits

• 800-amp rating for applications designed around an 800-A breaker.
• Three poles for compatible three-phase electrical equipment.
• Thermal-magnetic operation provides overcurrent protection based on the breaker's designed trip characteristics.
• Rear-connected construction fits equipment designed for this particular connection arrangement.
• 40°C rating for applications requiring this temperature specification.
• Interrupting ratings of 100k AIC at 600VAC, 100k AIC at 480VAC, and 125k AIC at 240VAC.
• Clearly defined dimensions help when checking physical fit in existing equipment.
• Well suited to situations where maintaining the original form, fit, and function is the priority.

Technical Specifications

• Part Number: PB3800
  
• Type: PB
  
• Breaker Type: Thermal Magnetic
  
• Amperage: 800A
  
• Poles: 3
  
• 600VAC AIC Rating: 100k
  
• 480VAC AIC Rating: 100k
  
• 240VAC AIC Rating: 125k
  
• Temperature Rating: 40°C
  
• Connection: Rear Connected
  
• Height: 22.13 in.
  
• Width: 12.06 in.
  
• Depth: 9.06 in.
  

Material Compliance and Certifications

• Specific material compliance information and agency certifications were not included in the available specifications for the PB3800. If your facility or application has particular certification, code, or material requirements, check the markings and documentation on the individual breaker before installation.

Where It Works Best

• The PB3800 800A circuit breaker makes the most sense for existing electrical equipment designed for this PB Type configuration. It's particularly relevant for maintenance and replacement work involving legacy systems where changing the equipment isn't the objective—the goal is to find a breaker that matches the required specifications.
  
• When checking compatibility, don't rely on amperage alone. Compare the PB3800 part number, three-pole configuration, voltage and AIC ratings, rear connection, dimensions, and 40°C rating with those of the breaker being replaced and the equipment requirements.
  
• That matters with older electrical systems. The right replacement isn't about choosing something newer or making unnecessary changes; it's about getting the required form, fit, and function for the equipment already in place.
  
• Always have final compatibility and installation requirements confirmed by qualified electrical personnel and follow applicable electrical codes and equipment specifications.