MDL3400L - 400 Amp Circuit Breaker

MDL3400L - 400 Amp Circuit Breaker

Upgrade your electrical systems with the Eaton MDL3400L, a high‑capacity molded case circuit breaker built for performance and trustworthiness. Whether you're in a busy industrial setting or managing a large commercial installation, this breaker delivers dependable protection and lasting durability—precisely what you need to keep operations running smoothly.

Key Features and Benefits

• High-Load Handling (400 A): Designed to manage substantial currents, this breaker is ideal for demanding setups—no sweating overloaded circuits.
• Wide Voltage Application: Works seamlessly with both 600 Vac and 250 Vdc systems, making it highly adaptable across installations.
• Exceptional Fault Response: With a 65 kAIC interrupt rating at 240 Vac and 50 kAIC at 480 Vac, it responds swiftly in fault conditions to help prevent damage.
• Built To Last: Crafted from solid materials, it’s made for consistent daily use without compromise in harsh environments.
• Safe and Reliable: Engineered with precise line and load lug terminals and fixed thermal/magnetic trip mechanisms for predictable and secure operation.

Technical Specifications

• Frame Type: MDL
• Trip Mechanism: Fixed Thermal, Fixed Magnetic
• Poles: 3
• Amperage: 400 A
• Voltage Rating: 600 Vac | 250 Vdc
• Interrupting Capacity:
  • 65 kAIC at 240 Vac
  • 50 kAIC at 480 Vac
• Frequency: 50/60 Hz
• Dimensions:
  • Length: 22.86 cm
  • Width: 12.7 cm
  • Height: 12.7 cm
• Weight: ~1.31 kg
• Special Features: Line and Load Lug Terminals for straightforward wiring

Material Compliance and Certifications

• UL Listed: Meets strict safety and performance standards, giving you peace of mind on compliance.
• Eaton Selling Policy 25‑000: Backed by Eaton’s warranty, ensuring you’re covered for reliability and customer satisfaction.

Suitability

• Commercial Buildings: Perfect for safeguarding extensive electrical systems in offices or retail spaces.
• Industrial Facilities: Handles heavy-duty power demands without fail, helping keep machinery and operations safe.
• Power Distribution Networks: Delivers consistent, reliable protection in complex distribution panels.
• Motor Protection: Prevents overloads and short circuits—ideal for keeping your equipment running without surprises.