FH36090 - 20 Amp Circuit Breaker

FH36090 - 20 Amp Circuit Breaker

When your circuit breaker needs replacing, the last thing most maintenance teams want is to modify an electrical distribution system that has been working reliably for years. The Square D FH36090 is designed for exactly that situation. As a direct replacement for compatible Square D I-Line electrical systems, it provides the same form, fit, and function needed to help keep existing equipment operating as originally designed. By matching the original catalog number and electrical ratings, facility managers and electricians can maintain system compatibility while minimizing unnecessary changes to panelboards or switchboards.

Key Features and Benefits

• 90 Amp continuous current rating
• Three-pole design for three-phase electrical systems
• Rated for applications up to 600V AC
• Designed for compatible Square D I-Line panelboards and switchboards
• I-Line mounting provides the proper form, fit, and function for replacement applications
• Thermal magnetic trip technology provides overload and short-circuit protection
• HACR rated for heating, air conditioning, and refrigeration equipment
• 900 Amp magnetic hold current
• 1,700 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
• Helps maintain compatibility with existing Square D electrical distribution equipment
  

Technical Specifications

• Catalog Number: FH36090
  
• Manufacturer: Square D
  
• Product Type: Circuit Breaker
  
• Series: FH
  
• Trip Unit Technology: Thermal Magnetic
  
• Amperage Rating: 90 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: AL100FA
  
• Magnetic Hold Current: 900 Amps
  
• Magnetic Trip Current: 1,700 Amps
  
• Application Rating: HACR Rated
  
• Dimensions: 6.4 in. H × 4.5 in. W × 4.13 in. D
  
• Certifications: UL Listed; CSA Certified
  
• Country of Origin: Mexico
  

Material Compliance and Certifications

The Square D FH36090 is UL Listed and CSA Certified for installation in compatible Square D I-Line electrical distribution equipment. It is intended for replacement and maintenance applications and should be installed by qualified electrical personnel in accordance with the National Electrical Code (NEC), applicable local electrical codes, and accepted electrical safety practices.

Where It Works Best

• Compatible Square D I-Line panelboards and switchboards
• Commercial office buildings
• Industrial manufacturing facilities
• Healthcare facilities and hospitals
• Schools and educational campuses
• HVAC and refrigeration systems
• Three-phase motor circuits
• Pumps, compressors, and processing equipment
• Manufacturing and production machinery
• Branch circuit protection
• Electrical maintenance and repair projects
• Replacement of existing Square D FH-series circuit breakers