FA36090 **Old Style** - 90 Amp Circuit Breaker

FA36090 **Old Style** - 90 Amp Circuit Breaker

The FA36090 Old Style is a 90-amp, 3-pole thermal-magnetic molded-case circuit breaker for compatible FA Series I-Line panelboards. When you're maintaining an existing electrical system, having the correct breaker ratings and physical configuration is important. This model matches the original FA Series specifications for installations requiring a form, fit, and functional replacement.

The thermal magnetic trip unit provides protection during overload and short-circuit conditions by responding to both long-duration current increases and sudden fault events. Built to last, this FA Series breaker is a practical solution for facilities that need to maintain existing electrical equipment without changing the original panelboard setup.

Key Features and Benefits

• 90 Amp current rating
• Three-pole configuration for compatible three-phase applications
• FA Series Old Style thermal magnetic molded case circuit breaker
• Thermal magnetic trip unit helps protect against overloads and short circuits
• Compatible with FA Series I-Line panelboards
• HACR Type rated for qualifying HVAC and refrigeration equipment
• Rated for 60Hz electrical systems
• Suitable for operation at ambient temperatures up to 40°C (104°F)
• Built to last in existing commercial and industrial electrical systems
• Maintains the original form, fit, and function of compatible FA Series installations

Technical Specifications

• Part Number: FA36090 Old Style
  
• Type: FA
  
• Circuit Breaker Type: Thermal Magnetic Molded Case Circuit Breaker
  
• Amperage: 90 Amps
  
• Poles: 3
  
• Voltage Ratings: 600VAC, 480VAC, 240VAC
  
• Interrupting Capacity (A.I.C.):
  • 14kA @ 600VAC
  • 14kA @ 480VAC
  • 18kA @ 240VAC
• Frequency: 60Hz
  
• HACR Rated: Yes
  
• Ambient Temperature Rating: 40°C (104°F)
  
• Application: Compatible I-Line Panelboards
  
• Dimensions:
  • Width: 4.50" W
  • Height: 8.75" H
  • Depth: 4.38" D
• Approximate Shipping Weight: 7.50 lbs.
  

Material Compliance and Certifications

The FA36090 Old Style is a thermal magnetic molded case circuit breaker intended for use in compatible FA Series I-Line panelboards. Before installation, confirm that the breaker matches the existing equipment requirements, including amperage, voltage rating, interrupting capacity, pole configuration, and mounting style. Installation should be completed by qualified electrical personnel following the National Electrical Code (NEC), applicable local electrical codes, and manufacturer guidelines.

Where It Works Best

• FA Series I-Line panelboards
• Commercial electrical distribution systems
• Industrial facilities
• Manufacturing plants
• Office buildings
• Educational facilities
• Healthcare facilities
• HVAC and refrigeration equipment requiring HACR-rated protection
• Three-phase branch and feeder circuits