FHL36045 - 45 Amp Circuit Breaker

FHL36045 - 45 Amp Circuit Breaker

When your circuit breaker needs replacement, the most important thing is finding the right match—not changing a system that is already designed and installed. The Square D FHL36045 is made for maintenance situations where keeping the existing electrical setup intact matters. By matching the original catalog number, amperage rating, voltage rating, pole configuration, and mounting style, this 45 Amp circuit breaker helps maintain the original form, fit, and function of compatible Square D electrical equipment.

Key Features and Benefits

• 45 Amp continuous current rating
• Three-pole configuration for three-phase electrical systems
• Rated for 600V AC applications
• Thermal-magnetic trip technology provides overload and short-circuit protection
• Unit mount design for compatible Square D equipment
• Line and load lug connections for designated installations
• HACR rated for heating, air conditioning, and refrigeration applications
• Helps maintain original equipment form, fit, and function
• Designed for replacement and maintenance applications
• Built to last in commercial and industrial environments
  

Technical Specifications

• Catalog Number: FHL36045
  
• Manufacturer: Square D
  
• Product Type: Circuit Breaker
  
• Series: FHL
  
• Trip Unit Technology: Thermal-Magnetic
  
• Amperage Rating: 45 Amps
  
• Voltage Rating: 600V AC
  
• Number of Poles: 3
  
• Phase Connection: ABC (Three-Phase)
  
• Breaking Capacity Code: H
  
• Mounting Style: Unit Mount
  
• Electrical Connections: Line Lugs and Load Lugs
  
• Terminal Identifier: AL100FA
  
• Magnetic Hold Current: 400 Amps
  
• Magnetic Tripping Current: 850 Amps
  
• Application Rating: HACR Rated
  
• Dimensions: 6.40 in. H × 4.50 in. W × 4.13 in. D
  

Material Compliance and Certifications

The Square D FHL36045 is UL Listed and CSA Certified, meeting recognized North American electrical safety standards. It is intended for installation in compatible electrical equipment and should be installed according to the National Electrical Code (NEC) and all applicable local electrical requirements.

Where It Works Best

• Compatible Square D electrical distribution equipment
• Commercial office buildings
• Industrial manufacturing facilities
• Existing electrical distribution systems
• HVAC equipment
• Heating and air conditioning systems
• Refrigeration equipment
• Three-phase motor circuits
• Pumps and compressors
• Manufacturing and processing equipment
• Commercial and industrial branch circuit protection