NA36900 - 900 Amp Circuit Breaker

NA36900 - 900 Amp Circuit Breaker

If you need serious protection for heavy-duty electrical systems, the NA36900 900A circuit breaker steps in with confidence. Designed for industrial and large commercial installations, this three-pole breaker handles high-current loads while providing dependable safety. It combines a tough molded-case housing with precision thermal-magnetic trip technology, so you get both durability and accurate protection against overloads or short circuits. Whether you're updating a power distribution setup or planning new infrastructure, this breaker gives you peace of mind under stress.

Key Features and Benefits

• High current capability (900 A): Built to support demanding electrical loads without strain or risk of derating.
• Thermal-magnetic trip action: Reacts intelligently to overloads and short circuits, reducing nuisance trips and safeguarding downstream components.
• I-Line plug-in format: Simplified installation into compatible panels — fast, secure, and less wiring hassle.
• Molded-case construction: Resists mechanical stress, vibration, and environmental challenges to ensure long life even in tough settings.
• Strong interrupting ratings (A.I.C.): Reliable performance in high fault environments: 100 kA @ 240 VAC, 50 kA @ 480 VAC, 25 kA @ 600 VAC.
• Three-pole balance: Ideal for three-phase systems, delivering uniform protection across phases.

Technical Specifications

• Poles: 3
• Amperage Rating: 900 A
• Interrupting Capacity (A.I.C.):
  • 100 kA @ 240 VAC
  • 50 kA @ 480 VAC
  • 25 kA @ 600 VAC
• Frame Type: NA
• Dimensions:
  • Width: 14.98 inches
  • Length: 12.12 inches
  • Depth: 8.07 inches
• Weight: ~60 lb
• Construction: Molded-case
• Trip Mechanism: Thermal-magnetic
• Type: I-Line plug-in

Material Compliance and Certifications

• Industry Standards: This breaker is built to meet industry safety and quality benchmarks. It’s constructed from premium materials engineered for stability and endurance.
• Certifications: It holds relevant certifications — including UL and ANSI compliance — giving you confidence in performance, regulatory alignment, and compatibility across professional systems.

Where It Works Best

• Industrial Plants & Manufacturing Facilities: Ideal for heavy loads, motors, and large machinery circuits.
• Commercial Power Distribution: Great for switching and protecting major feeders in large buildings, data centers, or infrastructure hubs.
• High-Fault Environments: Reliable in installations with high prospective fault currents thanks to its high interrupting capacity.
• Three-Phase Systems: Delivers balanced protection across all three phases in high-demand setups.
• Expansion or Retrofits: The plug-in format makes it easier to upgrade older panels with minimal rewiring.