FH36020 - 20 Amp Circuit Breaker

FH36020 - 20 Amp Circuit Breaker

Keeping an existing Square D I-Line™ electrical distribution system operating begins with using a replacement breaker that matches the original equipment. The Square D FH36020 is a 20 Amp, 3-pole thermal magnetic circuit breaker engineered for installation in compatible Square D I-Line panelboards and switchboards operating on 600V AC electrical systems. Whether you're replacing a breaker during scheduled maintenance or restoring service after a fault, selecting the correct catalog number helps maintain the original form, fit, and function of your electrical equipment.

Key Features and Benefits

• 20 Amp thermal magnetic circuit breaker
• 3-pole configuration for three-phase electrical systems
• Rated for 600V AC applications
• Designed for compatible Square D FH series I-Line panelboards and switchboards
• I-Line mounting for direct replacement in compatible equipment
• Thermal magnetic trip unit helps protect against overloads and short circuits
• HACR rated for heating, air conditioning, and refrigeration applications
• 275 Amp magnetic hold current
• 600 Amp magnetic trip current
• I-Line line connection with load-side lug terminals
• Built to last for long service life in commercial and industrial electrical systems
• Maintains original form, fit, and function when replacing an existing FH-series breaker
  

Technical Specifications

• Catalog Number: FH36020
  
• Manufacturer: Square D
  
• Product Type: Circuit Breaker
  
• Series: FH
  
• Trip Unit Technology: Thermal Magnetic
  
• Amperage Rating: 20 Amps
  
• Voltage Rating: 600V AC
  
• Number of Poles: 3
  
• Phase Connection: ABC
  
• Breaking Capacity Code: H
  
• Mounting Style: I-Line
  
• Electrical Connections: I-Line connection (line); lugs (load)
  
• Terminal Identifier: AL50FA
  
• Magnetic Hold Current: 275 Amps
  
• Magnetic Trip Current: 600 Amps
  
• Application Rating: HACR Rated
  
• Dimensions: 6.4 in. H × 4.5 in. W × 4.13 in. D
  
• Country of Origin: Mexico
  

Material Compliance and Certifications

The Square D FH36020 is UL Listed and CSA Certified for use in compatible Square D I-Line electrical distribution equipment. Installation should be performed by qualified electrical personnel in accordance with the National Electrical Code (NEC), applicable local electrical codes, and the manufacturer's installation instructions to help maintain safe operation and equipment compatibility.

Where It Works Best

• Compatible Square D I-Line panelboards and switchboards
• Commercial office buildings
• Industrial manufacturing facilities
• Institutional and educational buildings
• HVAC and refrigeration systems
• Three-phase motor and machinery circuits
• Branch circuit protection
• Electrical maintenance and repair projects
• Facility management and preventive maintenance