PB31600 - 1600Amp Circuit Breaker

PB31600 - 1600Amp Circuit Breaker

When you’re replacing a breaker in older electrical equipment, the details have to line up. The PB31600 is a 1600-amp, 3-pole Type PB thermal-magnetic circuit breaker designed with rear connections and a 40°C rating. Its interrupting ratings are 100k AIC at 600VAC, 100k AIC at 480VAC, and 125k AIC at 240VAC. The breaker measures 22.13 inches high, 12.06 inches wide, and 9.06 inches deep. Those dimensions are worth checking closely, especially when the goal is to keep an existing electrical system in service without changing its original configuration. For maintenance teams, electricians, and facility personnel working with compatible legacy equipment, the PB31600 offers the specific form, fit, and electrical characteristics needed for the application. It’s a straightforward replacement choice when existing equipment requires this exact Type PB configuration. Built to last, this breaker is well suited to applications where maintaining the original system setup is important.

Key Features and Benefits

• 1600-amp rating for equipment designed to use a breaker of this capacity.
• 3-pole design for compatible three-pole electrical systems.
• Thermal-magnetic operation provides the trip characteristics specified for this breaker type.
• Rear-connected construction fits applications designed around this connection arrangement.
• 40°C rated for installations requiring this temperature rating.
• Interrupting ratings of 100k AIC at 600VAC, 100k AIC at 480VAC, and 125k AIC at 240VAC.
• Type PB configuration for matching compatible existing electrical equipment.
• A practical choice for legacy equipment maintenance and replacement when the original specifications need to be maintained.
• Built to last for use in demanding electrical distribution applications.

Technical Specifications

• Part Number: PB31600
  
• Type: PB
  
• Breaker Type: Thermal Magnetic Circuit Breaker
  
• Amperage: 1600A
  
• Poles: 3
  
• AIC Rating @ 600VAC: 100k
  
• AIC Rating @ 480VAC: 100k
  
• AIC Rating @ 240VAC: 125k
  
• Temperature Rating: 40°C
  
• Connection: Rear-connected
  
• Dimensions:
  • Height: 22.13 in.
  • Width: 12.06 in.
  • Depth: 9.06 in.

Material Compliance and Certifications

• The available specifications do not include specific material compliance and certification information for the PB31600. If your facility or application requires a particular certification, listing, or material standard, check the markings and documentation associated with the individual breaker before installation. This is especially important when the breaker will be used in equipment subject to specific electrical codes or facility requirements.

Where It Works Best

• The PB31600 circuit breaker makes the most sense in existing electrical distribution equipment designed around its specific specifications. In other words, this isn’t about changing what the system was designed to do. It’s about finding the right match.
• For legacy installations, start by confirming the 1600A rating, three-pole configuration, Type PB design, rear connections, physical dimensions, and interrupting ratings. These details help determine whether the breaker fits the equipment already in place.
• The PB31600 is particularly useful for maintenance and replacement work where the goal is to keep older electrical equipment operational. Matching the original breaker as closely as possible in form, fit, and function can help preserve the intended system configuration.
• As with any circuit breaker replacement, don’t rely on amperage or physical size alone. Check the complete electrical ratings and equipment requirements before installation, and have qualified electrical personnel verify final suitability.