PDG21M0045TFFJ - 45 Amp Circuit Breaker

PDG21M0045TFFJ - 45 Amp Circuit Breaker

If your application calls for a 45-amp, single-pole molded case circuit breaker, the Eaton PDG21M0045TFFJ offers a straightforward solution from the Power Defense line. This Frame 2 breaker is rated 45A and has an interrupting rating of 65 kA at 277 VAC. It uses a fixed-trip design and comes with line and load lugs, so the basic configuration is easy to identify when you're comparing it with an existing breaker or checking a project specification. The PDG21M0045TFFJ measures approximately 1.38 inches high, 6 inches wide, and 3.5 inches deep. For maintenance teams, electricians, and facility professionals, those details matter: the correct breaker isn't simply about matching the amperage. Pole count, voltage, interrupting capacity, trip type, connections, and physical fit all need to line up with the equipment and application.

Key Features and Benefits

• 45-amp rating for compatible circuits requiring a 45A breaker.
• Single-pole design for applications specifically calling for 1-pole protection.
• 65 kA interrupting rating at 277 VAC provides significant short-circuit interrupting capacity when used in an appropriately rated system.
• A fixed-trip configuration keeps the trip setup straightforward, with fixed protection specified.
• Line and load lugs included for connection on both sides of the breaker.
• Power Defense Frame 2 construction makes the exact breaker family and frame size easy to identify when matching equipment.
• At just 1.38" x 6.0" x 3.5", its dimensions can be checked ahead of time when physical fit is an important consideration.
  

Technical Specifications

• Manufacturer: Eaton
  
• Part Number: PDG21M0045TFFJ
  
• Product Family: Power Defense
  
• Product Type: Molded Case Circuit Breaker (MCCB)
  
• Frame: Frame 2
  
• Poles: 1
  
• Amperage: 45A
  
• A.I.C. Rating: 65 kA at 277 VAC
  
• Trip Type: Fixed Trip
  
• Connections: Line & Load Lugs
  
• Height: 1.38 in.
  
• Width: 6.0 in.
  
• Depth: 3.5 in.
  

Material Compliance and Certifications

• The PDG21M0045TFFJ belongs to Eaton's globally rated Power Defense molded case circuit breaker family. Because approvals, certifications, and material compliance requirements can vary depending on the specific breaker configuration and application, the breaker markings and the applicable manufacturer documentation should be checked when a particular certification or compliance standard is required.

Where It Works Best

• The Eaton PDG21M0045TFFJ is suited to compatible commercial and industrial electrical distribution equipment requiring 45A, single-pole circuit protection with a 65 kA interrupting rating at 277 VAC. It can also make sense for maintenance and replacement work when an existing installation calls for this particular combination of frame size, amperage, pole count, trip configuration, and lug arrangement.
• When you're matching a replacement breaker, don't stop at the 45A rating. Check the full specification. Confirm the PDG21M0045TFFJ part number, Frame 2 design, single-pole configuration, 65 kA at 277 VAC rating, fixed trip, line and load lugs, and dimensions against the equipment requirements before installation.