FA34045 - 45 Amp Circuit Breaker

FA34045 - 45 Amp Circuit Breaker

When you need dependable protection for your three-phase electrical system, the Schneider Electric FA34045 is a purpose-built solution. Rated at 45 amps and operating up to 480 volts AC, this three-pole thermal-magnetic breaker delivers the kind of performance that commercial and industrial applications demand. With its plug-in I-Line mounting design, the FA34045 simplifies panel installation while offering high interruption capability—up to 18 kA at 480 V and 25 kA at 240 V. Built to Sch­neider Electric’s rigorous standards, this unit is UL Listed and CSA Certified. Its environmental credentials are strong too—compliant with RoHS/REACH requirements and part of the “Green Premium” product commitment for sustainability and circular-economy design. In short: if you’re upgrading panelboards, servicing HVAC systems, or specifying power-distribution gear in factories or commercial buildings, the FA34045 gives you a proven, practical solution that works reliably and installs easily.

Key Features & Benefits

• Thermal-Magnetic Trip Unit: Combines heat-sensing (long-time) overload protection with magnetic (instantaneous) short-circuit response for accurate protection when and where you need it most.
• High Interrupting Rating: Interrupts up to 18 kA at 480 V AC and 25 kA at 240 V AC for strong short-circuit performance.
• Compact Footprint with I-Line Mounting: Measuring approximately 6.4″ high × 4.5″ wide × 4.13″ deep, this breaker fits neatly in I-Line style panels for efficient space use.
• HACR-Rated: Approved for use with heating, air-conditioning and refrigeration (HACR) loads, so you have flexibility in HVAC and general-purpose applications.
• Plug-In I-Line Connection: Simplifies line-side wiring by offering I-Line connection on the line side and lug connection on the load side for secure and efficient installation.

Technical Specifications

• Rated Current: 45 amps
• Number of Poles: 3 (three-phase)
• Interrupting Capacity:
  • 18 kA at 480 V AC
  • 25 kA at 240 V AC
  • 10 kA at 250 V DC
• Mounting Mode: I-Line system
• Electrical Connection: I-Line connection on line side; lug connection on load side
• Magnetic Hold Current: 400 A
• Magnetic Trip Current: 850 A
• Dimensions (H × W × D):
  • 6.4″ × 4.5″ × 4.13″ (162.6 mm × 114.3 mm × 104.9 mm)

Material Compliance & Certifications

• UL Listed, CSA Certified: ensures recognized safety standards for North American electrical systems.
• Environmental Compliance: RoHS/REACH compliant and designated as a “Green Premium” product, reflecting low-impact materials and design for a circular economy.

Where It Works Best

• Commercial buildings using three-phase panelboards, where dependable protection and plug-in installation matter.
• Industrial facilities where equipment loads require a 45 amp breaker with strong short-circuit interrupting capability.
• HVAC systems, refrigeration circuits, and general MRO applications thanks to its HACR rating and design flexibility.
• Retrofitting older I-Line panelboards or servicing existing installations where space is a premium and installation speed matters.