FA34090 **Old Style** 90 Amp Circuit Breaker

FA34090 **Old Style** 90 Amp Circuit Breaker

Looking for a reliable, industrial‐grade three-phase solution? The FA34090 is engineered for commercial and industrial electrical systems requiring dependable performance and high fault capacity. With a 90 A line rating and thermal-magnetic trip unit built in, this breaker provides strong protection against overloads and short circuits across three poles. Its I-Line mounting system makes it simple to integrate into existing switchboards — so you get fast, efficient installation without compromise.

Key Features and Benefits

• High interrupting capacity: Able to handle up to 14 kA at 480 VAC and 18 kA at 240 VAC, the FA34090 excels even under demanding fault conditions.
• Thermal-magnetic trip unit: Combines long-term overload protection (thermal) with immediate response to short-circuit events (magnetic) for full-spectrum safety.
• Three-pole design: Ideal for three-phase systems, giving consistent protection across all phases rather than a single leg.
• I-Line mounting compatibility: Designed to fit seamlessly into I-Line panel systems, making upgrades or replacements straightforward.
• User-friendly installation: With lug load-side connections and standard form factors, this breaker speeds up setup and minimizes downtime.

Technical Specifications

• Trip Unit Technology: Thermal-magnetic
  
• Line Rated Current: 90 A
  
• Number of Poles: 3P (three-pole)
  
• Mounting Mode: I-Line
  
• Magnetic Hold Current: 900 A
  
• Magnetic Tripping Current: 1,700 A
  
• Electrical Connection: Load side via lugs; line side via I-Line connection
  
• Dimensions:
  • Height: 6.4 in (162.6 mm)
  • Width: 4.5 in (114.3 mm)
  • Depth: 4.13 in (104.9 mm)

Material Compliance and Certifications

• Certifications: UL Listed and CSA certified for safety and compliance in North American industrial applications.
• Environmental Standards: RoHS and REACh compliant, aligning with modern environmental standards.
• Green Premium: Marked as a “Green Premium” product, reflecting the manufacturer’s commitment to sustainable design and production.

Where It Works Best

• The FA34090 is perfectly suited for facilities where reliable three-phase circuit protection matters—think commercial buildings, manufacturing plants, large HVAC systems, data centers, and heavy-duty equipment rooms. If you need a breaker that steps up to high fault currents and delivers consistent protection under heavy loads, this is a smart choice. Whether you’re doing panel upgrades, new installations, or replacing older breakers in three-phase systems, it offers the usability, capacity, and compliance you need.