MGP36450 - 450 Amp Circuit Breaker

MGP36450 - 450 Amp Circuit Breaker

The Schneider Electric PowerPacT M MGP36450 is a 450 amp, 3-pole molded-case circuit breaker built for critical power environments. Designed for 600 V AC service and an interrupting capacity of 18 kA at 600 V, this breaker offers reliable protection for your electrical system against overloads and short-circuit faults. Equipped with the ET 1.0 electronic trip unit, it provides adjustable long-time and instantaneous pick-up settings, giving you flexible, accurate protection tailored to your installation needs. Whether you’re upgrading an existing panel or building out new infrastructure in industrial, commercial, or mission-critical applications this breaker gives you the performance and compliance required for today’s demanding power distribution environments.

Key Features and Benefits

• High interrupting capacity: With an 18 kA interrupt rating at 600 V AC, this breaker delivers strong fault-current protection in high-demand systems.
• Electronic trip unit (ET 1.0): This solid-state trip mechanism enables precise settings and improved coordination compared to thermal-magnetic breakers—offer­ing enhanced safety and fewer nuisance trips.
• 3-pole design for 3-phase systems: Built to carry 450 amps in a three-pole configuration, it supports stable three-phase distribution with consistent performance.
• Versatile installation options: The breaker supports unit-mount lug or I-Line construction and includes terminal nuts on the line side and load-side lugs to fit a wide range of panel layouts.
• User-friendly operation: A built-in push-to-trip button allows manual testing and verification of tripping mechanisms, helping maintenance teams conduct safer inspections.
• Trusted brand and lifespan: Schneider Electric’s PowerPacT line is widely regarded, ensuring parts availability, serviceability and reliability in power distribution installations.

Technical Specifications

• Rated Current: 450 A
  
• Number of Poles: 3
  
• Rated Operational Voltage: 600 V AC 50/60 Hz
  
• Interrupting Rating: 18 kA at 600 V AC (UL 489)
  
• Dimensions (approx.): 12.86 in (H) × 8.27 in (W) × 8.05 in (D)
  
• Weight: approx. 29 lb (13.15 kg)
  
• Operating Temperature Range: –25 °C to +70 °C (–13 °F to 158 °F)
  
• Frame Type: M-Frame (PowerPacT M)
  
• Continuous Current Rating: 80 % of frame (in applicable usage)
  

Material Compliance and Certifications

• Green Premium Program: This breaker belongs to Schneider Electric’s “Green Premium” collection, aligning with modern sustainability expectations.
• Environmental Standards: It meets RoHS and REACh standards, is free of PVC, and holds CE, UL, CSA, NEMA and NOM certifications—ensuring compliance with global safety and environmental mandates.

Where It Works Best

• If your facility includes large-scale commercial buildings, manufacturing plants, data centers, or any install with heavy three-phase loads and high fault-current potential, the MGP36450 is a smart choice. It’s especially suitable when you’re upgrading or replacing legacy breakers, designing for future expansion, or need a dependable component for a panelboard in demanding service. For operations with strong emphasis on uptime, safety coordination, and fault-clearing.