PBF31800 1800 Amp Circuit Breaker

PBF31800 1800 Amp Circuit Breaker

When you’re replacing a breaker in an existing electrical system, the details matter. The PBF31800 is a Type PBF, 3-pole circuit breaker rated at 1800 amps, designed for 60-cycle applications. This AB DE-ION® breaker has an interrupting rating of 100k AIC at 600VAC, 100k AIC at 480VAC, and 125k AIC at 240VAC. Its magnetic low/high trip settings range from 3000A to 8000A.

For maintenance work on older commercial or industrial equipment, matching the original breaker’s specifications can reduce uncertainty. The PBF31800 measures approximately 22 inches high, 12 inches wide, and 9 inches deep, giving you another set of important details to compare with the existing installation. Rather than choosing a breaker based on appearance, check the part number, amperage, poles, voltage, AIC rating, trip settings, frequency, and dimensions. If your equipment calls for these PBF31800 characteristics, this breaker is built to provide the form, fit, and function required by the application—and it’s built to last when properly installed and maintained.

Key Features and Benefits

• 1800-amp rating for systems designed around this specific current capacity.
• 3-pole configuration for compatible three-phase applications.
• Type PBF breaker construction for matching appropriate existing equipment.
• AB DE-ION® circuit breaker design.
• Designed for 60-cycle (60 Hz) electrical systems.
• Rated 100k AIC at 600VAC and 480VAC, and 125k AIC at 240VAC.
• 3000A–8000A magnetic low- and high-trip settings.
• Clearly defined dimensions help when checking physical fit in existing equipment.
• Well suited to maintenance applications where preserving the required breaker configuration is important.

Technical Specifications

• Part Number: PBF31800
  
• Type: PBF
  
• Breaker Type: AB DE-ION® Circuit Breaker
  
• Poles: 3
  
• Amperage: 1800A
  
• Frequency: 60 cycles / 60 Hz
  
• AIC Rating at 600VAC: 100k
  
• AIC Rating at 480VAC: 100k
  
• AIC Rating at 240VAC: 125k
  
• Magnetic Low/High Trip Settings: 3000A–8000A
  
• Height: 22.0 in.
  
• Width: 12.0 in.
  
• Depth: 9.0 in.
  

Material Compliance and Certifications

• No specific material compliance declarations, certifications, or agency listings were included in the provided product information. If your installation requires a particular certification or compliance standard, check the markings and documentation for the individual breaker before installation.
• This is especially important with electrical equipment used in existing systems. The breaker should meet the requirements of the equipment, application, and applicable electrical codes.

Where It Works Best

• The PBF31800 1800A circuit breaker makes the most sense in an existing commercial or industrial electrical system that already calls for a 3-pole Type PBF breaker with matching ratings and dimensions. It is particularly relevant for maintenance and functional replacement work involving compatible legacy electrical equipment.
  
• Have an existing breaker you’re trying to match? Start with the nameplate and compare the important details one by one: the PBF31800 part number, 1800A rating, three-pole configuration, voltage, AIC rating, 60 Hz frequency, magnetic trip settings, and physical dimensions. A breaker that looks similar isn’t necessarily the right one. For legacy equipment, getting those specifications right is what counts.