MHL364001021 - 400 Amp Circuit Breaker

MHL364001021 - 400 Amp Circuit Breaker

Power your system with confidence using the MHL364001021 molded case circuit breaker. Engineered for reliability, this unit blends thermal and magnetic protection to guard your equipment against overloads and faults. Whether you’re upgrading a distribution panel or specifying a new installation, this circuit breaker delivers the performance and security you demand.

Key Features and Benefits

• High Interrupting Ability: Rated up to 65 kAIC (at 480 V / 240 V), it can clear severe fault currents without damage.
• Thermal-Magnetic Trip Mechanism: Offers responsive overload protection (thermal) plus fast short-circuit response (magnetic) in one integrated device.
• Tough Molded Case Construction: Built for heavy use, with a design that resists stress, ensures longer life, and helps simplify servicing.
• Complete with Line & Load Lugs: Arrives ready to install, with included connections for both line and load sides, minimizing extra parts.
• Clear, User-Friendly Design: Labels, mounting points, and lug layout are intuitive for electricians and maintenance teams.

Technical Specifications

• Number of Poles: 3
• Current Rating: 400 A
• Voltage Ratings:
  • 600 V AC (25 kAIC)
  • 480 V AC (65 kAIC)
  • 240 V AC (65 kAIC)
• Frequency: 60 Hz
• Ambient Temperature Rating: 40 °C
• Frame Type: MHL
• Unit Weight: approx. 45 lb
• Lugs: Included for both line and load

Material Compliance and Certifications

• This breaker is manufactured from high-grade insulating and conductive materials that satisfy stringent industry safety standards. It has undergone rigorous testing and adheres to recognized performance certifications in commercial, industrial, and utility settings.
• Built to meet or exceed code requirements, it provides you with peace of mind that your installation remains compliant and safe under demanding conditions.

Where It Works Best

• The MHL364001021 is ideal for installations that demand dependable protection in tight spaces—say, in switchboards, panelboards, or electrical distribution systems in commercial buildings, factories, data centers, or institutional settings. When your facility faces significant fault currents, high duty cycles, or limited installation room, this circuit breaker is a smart choice. Use it where you cannot afford downtime, where safety is essential, and where you need long-term performance under stress.