PXD63B120 - 1200 Amp Circuit Breaker

PXD63B120 - 1200 Amp Circuit Breaker

When you're replacing a breaker in an existing electrical system, the details have to match. The PXD63B120 is a 1200A, 3-pole molded-case circuit breaker with a PD1600A frame and a PXD6 type designation. It uses a thermal-magnetic, non-interchangeable trip unit and measures 16 inches high, 9 inches wide, and 6.19 inches deep.

Just as important are the interrupting ratings. The PXD63B120 is rated 25k A.I.C. at 600VAC, 50k A.I.C. at 480VAC, and 65k A.I.C. at 240VAC. That gives electricians and maintenance teams the information they need when checking it against the requirements of an existing system.

This breaker is a practical fit for legacy equipment that was designed around the same PXD6 configuration. Rather than trying to change the system, the goal here is simple: match the required frame, amperage, poles, dimensions, trip configuration, voltage, and interrupting rating as closely as the application requires. The PXD63B120 is built to last when properly applied and maintained. One important detail to keep in mind: lug terminals are not included.

Key Features and Benefits

• 1200-amp rating for applications designed around this specific current rating.
• Three-pole configuration for compatible three-pole electrical systems.
• Uses a PD1600A frame and carries the PXD6 type designation.
• Thermal-magnetic trip provides overcurrent protection for the intended application.
• Features a non-interchangeable trip unit.
• Interrupting ratings are 25k at 600VAC, 50k at 480VAC, and 65k at 240VAC.
• Known dimensions help when checking physical fit in existing equipment.
• A useful option for form, fit, and functional replacement in compatible legacy electrical systems.
• Built to last when correctly selected, installed, and maintained.
• Lug terminals are not included.

Technical Specifications

• Part Number: PXD63B120
  
• Type: PXD6
  
• Frame: PD1600A
  
• Product Type: Molded Case Circuit Breaker
  
• Trip: Thermal Magnetic
  
• Trip Unit: Non-Interchangeable
  
• Poles: 3
  
• Amperage: 1200A
  
• A.I.C. @ 600VAC: 25k
  
• A.I.C. @ 480VAC: 50k
  
• A.I.C. @ 240VAC: 65k
  
• Height: 16.0 in.
  
• Width: 9.0 in.
  
• Depth: 6.19 in.
  
• Lug Terminals: Not Included
  

Material Compliance and Certifications

• Specific certification and material-compliance information was not provided with the available specifications for the PXD63B120. If your installation requires a specific listing or compliance standard, check the breaker markings and the applicable product documentation before installation.
• UL, CSA, RoHS, or other certification status should not be assumed unless it can be confirmed from the product itself or supporting documentation.

Where It Works Best

• The PXD63B120 makes the most sense when you're maintaining an existing electrical distribution system that already calls for a PXD6, 1200A, 3-pole molded case circuit breaker on a PD1600A frame.
• It's especially relevant for legacy installations where changing equipment isn't the objective—you need a breaker with the correct form, fit, and electrical characteristics for the existing application.
• Before using any replacement circuit breaker, compare more than just the catalog number. Check the 1200A rating, three-pole configuration, PD1600A frame, PXD6 type, voltage, A.I.C. rating, physical dimensions, mounting arrangement, trip configuration, and connection requirements against the breaker being replaced and the equipment specifications.