M50ASR365 - 400 Amp Panel Switch

M50ASR365 - 400 Amp Panel Switch

The M50ASR365 is a heavy‑duty, bolt‑in, 3‑pole 400 A panel switch built to deliver reliable performance in demanding electrical environments. Rated for up to 600 V AC, this compact yet powerful unit is engineered to accept Class RK1 and RK5 fuses — making it a perfect fit when you need dependable overcurrent protection in industrial or commercial setups. Its straightforward installation, combined with solid build quality, means less downtime and more confidence for electricians, facility managers, or contractors specifying gear for load centers, motor control centers, or power distribution panels.

Key Features and Benefits

• 3‑Pole, 400 Amp Capacity: Heavy current-handling ability gives you flexibility for large loads and multi-phase systems.
• 600 Volt AC Rated: Compatible with high-voltage applications common in industrial and commercial settings.
• Bolt‑In Panel Switch Format: Easy to install securely into existing panels, which speeds up job time and avoids complicated retrofits.
• Fusible Unit Accepting Class RK1 & RK5 Fuses: Offers flexibility in fuse selection and ensures dependable overcurrent protection while meeting common fuse‑class standards.
• Compact yet Strong: Although rated for demanding workloads, the unit remains manageable in size and weight (Ship Weight: ~23.5 lb), making for easier handling and installation.

Technical Specifications

• Part Number: M50ASR365
  
• Poles: 3
  
• Ampere Rating: 400 A
  
• Voltage Rating: Up to 600 V AC
  
• Frame Type: M50
  
• Configuration: Single-unit, fusible panel switch (bolt-in)
  
• Fuse Compatibility: Class RK1 and RK5 fuses
  
• Shipping Weight: 23.5 lb
  
• Approximate Height: 15.0 in
  

Material Compliance and Certifications

• Industry Standards: This panel switch is manufactured to meet standard electrical safety and compatibility requirements when used with properly rated RK1 or RK5 fuses. The metal housing and internal components conform to general industrial-grade electrical standards, ensuring dependable operation when installed per code. Because it accepts widely used fuse classes, it integrates seamlessly into setups that require compliance with industry regulations for overcurrent protection.

Where It Works Best

• The M50ASR365 shines in industrial plants, manufacturing facilities, commercial buildings, large residential complexes, and anywhere heavy-duty electrical loads demand reliable protection. It’s ideal for main or branch power distribution panels, motor control centers, HVAC systems, large lighting systems, or anywhere a 3-phase, high-amperage fusible breaker is preferred. If you’re upgrading an existing panel or wiring a new distribution board, this unit offers the combination of power, safety, and installation ease that professionals rely on.