MJA36350 - 350 Amp Circuit Breaker

MJA36350 - 350 Amp Circuit Breaker

Meet your following line of defense in power distribution: the MJA36350 PowerPact M-Frame circuit breaker delivers dependable protection and performance for industrial and large commercial systems. Engineered to help safeguard your infrastructure from overloads, short circuits, and fault conditions, this breaker brings peace of mind where reliability is nonnegotiable.

Key Features and Benefits

• Advanced Protection in One Package: Equipped with the ET 1.0 electronic trip unit, it delivers precise, dynamic overload and short-circuit protection tailored to your installation needs.
• Flexible Mounting Options: Built to support I-Line installations or unit-mount setups, offering adaptability for retrofit or new systems.
• Network-Ready Intelligence: The ET 1.0 unit communicates via open protocols, making it easier to integrate into energy management or intelligent monitoring systems.
• Built to Last: Designed and tested to meet stringent safety and operational standards, so it stands up to demanding conditions.
• Simple Manual Testing: Includes a built-in push-to-trip button for quick manual testing without needing external test gear.

Technical Specifications

• Rated Current: 350 A
  
• Poles: 3
  
• Voltage Rating: 600 VAC, 50/60 Hz
  
• Interrupting Capacity: 25 kA @ 600 VAC
  
• Trip Technology: ET 1.0 electronic trip unit
  
• Mounting Style: I-Line (line side) with lugs on load side
  
• Dimensions:
  • Height: 12.86 in
  • Width: 8.27 in
  • Depth: 8.05 in
• Weight: ~29 lb (13.2 kg)
  
• Compliance Voltage (Insulation): 750 V (IEC)
  
• Operating Temperature: –25 °C to 70 °C (–13 °F to 158 °F)
  
• Altitude Rating: Up to ~2,000 m without derating
  

Material Compliance and Certifications

• This breaker is built with sustainability and safety in mind. It complies with RoHS and REACH regulations, reducing hazardous substance usage.
• It carries certifications under UL, CSA, NOM, and IEC 60947-2, and bears the CE mark to support global installations.
• As part of Schneider Electric’s Green Premium™ family, this unit is designed to promote more extended service life and environmental responsibility.

Where It Works Best

• Industrial plants — Protect motor feeders, busways, or subpanel circuits with consistent, reliable trip performance.
• Commercial buildings — Ideal for main distribution panels where high capacity and dependable protection are critical.
• Data centers & server farms — Strong interrupting capacity ensures secure operation under high fault currents.
• Upgrades or retrofits — With its modular mounting options and open-communications ET unit, it fits nicely into modern control systems.