FA36045 **Old Style** - 45 Amp Circuit Breaker

FA36045 **Old Style** - 45 Amp Circuit Breaker

The FA36045 Old Style is a 45 Amp, 3-pole thermal magnetic molded case circuit breaker designed for use in compatible I-Line panelboards. It is intended as a form-, fit-, and function-equivalent replacement for existing FA Series installations, helping you maintain the original configuration of legacy electrical distribution systems. Matching the correct amperage, pole configuration, interrupting rating, and mounting style is essential when servicing existing equipment, and the FA36045 Old Style is built to meet those compatibility requirements.

This breaker features a thermal-magnetic trip unit that helps protect your electrical circuits by responding to both prolonged overload conditions and instantaneous short circuits.

Key Features and Benefits

• 45 Amp current rating
• Three-pole configuration for compatible three-phase electrical systems
• FA Series Old Style thermal magnetic molded case circuit breaker
• Thermal magnetic trip mechanism helps protect against overloads and short circuits
• Designed for use in compatible I-Line panelboards
• HACR Type rated for qualifying HVAC and refrigeration applications
• Rated for 60Hz electrical systems
• Suitable for operation in ambient temperatures up to 40°C (104°F)
• Intended as a form, fit, and functional replacement for compatible legacy installations
• Durable molded case construction built to last

Technical Specifications

• Part Number: FA36045 Old Style
  
• Type: FA
  
• Product Type: Thermal Magnetic Molded Case Circuit Breaker
  
• Amperage Rating: 45 Amps
  
• Poles: 3
  
• Voltage Ratings: 240VAC / 480VAC / 600VAC
  
• Interrupting Rating: 18kA @ 240VAC; 14kA @ 480VAC; 14kA @ 600VAC
  
• Frequency: 60Hz
  
• Application: Compatible I-Line Panelboards
  
• Trip Unit: Thermal Magnetic
  
• HACR Rated: Yes
  
• Ambient Temperature Rating: 40°C (104°F)
  
• Dimensions:
  • Width: 4.50" W
  • Height: 8.75" H
  • Depth: 4.38" D
• Approximate Shipping Weight: 7.50 lbs.
  

Material Compliance and Certifications

The FA36045 Old Style is designed for installation in compatible FA Series I-Line panelboards where the original electrical and mechanical specifications match. Before installation, verify the breaker's amperage, voltage, interrupting capacity, pole configuration, and mounting style to ensure compatibility with the existing equipment. Installation should be performed by qualified electrical personnel in accordance with the National Electrical Code (NEC), applicable local electrical codes, and manufacturer guidelines.

Where It Works Best

• Compatible FA Series Old Style I-Line panelboards
• Commercial electrical distribution systems
• Industrial facilities
• Manufacturing and processing plants
• HVAC and refrigeration systems requiring HACR-rated circuit protection
• Three-phase branch and feeder circuits
• Electrical maintenance and repair projects
• Existing installations where maintaining the original form, fit, and function is important
• Legacy electrical systems requiring a compatible FA36045 Old Style circuit breaker