MA3400 - 400 Amp Circuit Breaker

MA3400 - 400 Amp Circuit Breaker

Hit the ground running with reliable protection built for industrial and commercial maintenance crews: the MA3400 delivers 400 amps of thermal‑magnetic circuit-breaking power, featuring a 3‑pole design that stands guard against overloads and short circuits. You’ll appreciate the load‑side terminals that streamline wiring, while the interchangeable trip unit gives you the power to fine-tune your system right on site—no extra parts needed.

Key Features and Benefits

• Dual-mode protection: Thermal‑magnetic tripping means you're covered for both overloads and short circuits—keeping your gear safe and operations smooth.
• Interchangeable trip unit: Easily switch trip mechanisms to match changing system needs—no fuss, just swift adjustment.
• Load‑side terminals: Cut down on installation time and complexity—wiring is straightforward, and you save on labor and accessories.

Technical Specifications

• Poles: 3
  
• Amperage: 400 A
  
• Interrupting Rating:
  • 22 kA @ 600 VAC
  • 30 kA @ 480 VAC
  • 42 kA @ 240 VAC
• Frame Type: MA
  
• Dimensions:
  • Width: 8.25″
  • Length: 16.00″
  • Depth: 4.00″
• Shipping Weight: 50 lb
  
• Ambient Rating: 40 °C operating temperature
  

Material Compliance and Certifications

• Made with premium-grade materials that meet—or surpass—industry safety and durability standards, the MA3400 aligns with all required certifications for electrical equipment use. You can trust that it’s built to last and to perform safely in demanding environments.

Suitability

• This unit is specially built for the rigors of industrial and commercial maintenance. If you require dependable protection with high interrupting capacity in high-stress systems—whether you're servicing factories, commercial facilities, or heavy‑duty maintenance setups—the MA3400 is the perfect partner.